[X2Go-User] X2Go: The Gathering 2024 (2024-06-28 to 2024-06-30) will take place at Linuxhotel, Essen, Germany

[Vorstand ORCA e.V.]

Dear $ALL,

As stated in the subject line, X2Go: The Gathering 2024 will take place 
at Linuxhotel, Essen, Germany, from Friday afternoon, 2024-06-28, to 
Sunday afternoon/evening, 2024-06-30 and will, again, be a three-day 
"work and play" (coding, chatting, sightseeing, socializing) event.


X2Go: The Gathering is the annual event where users, admins, and 
developers (including the i18n volunteers) of X2Go meet face to face, to 
discuss current X2Go-related issues, fix open bugs, and have a good time 
getting to know each other.
As there is some overlap between X2Go, Arctica, and orca e.V., you can 
expect to see members of those groups as well.


After 4 years spent "in exile" (with a skeleton crew of volunteers 
meeting at shackspace in 2020, and going completely virtual in the years 
2021-2023) due to the pandemic situation, we are finally returning to a 
full real-life event at Linuxhotel (though we will be 
streaming/recording our sessions, so you can join in remotely as well).


Note that while we do not require masks to be worn, it is still 
recommended and endorsed, especially in indoor areas.
At the time of writing this invitation, and using some educated guesses 
regarding under-reporting and wastewater analysis, Covid infection rate 
in Germany is roughly somewhere between 1 out of 1000 and 1 out of 500 
people per week.


*ATTENTION!*
If you want to join us *and* want to sleep in one of the hotel rooms at 
the Linuxhotel, we need the number of beds and nights you want to 
reserve, as well as *your full name* (as printed on your passport) and 
*your nationality* by *2024-06-07* *23:59:59* *CEST*!!!
Very important!!! After that date, we cannot guarantee that we will 
still be able to reserve a room for you!  First come, first serve!  As 
single rooms are in short supply, please book your bed in a 2- or 3-bed 
room, unless you absolutely have to use a single room.


Please send your reservation request to  
with the text "The Gathering" somewhere in the subject and bug me 
publicly on the X2Go-Project list if you don't receive a confirmation by 
e-mail after a day or two.


If for some reason or other you do *not* need a place to sleep at 
Linuxhotel, but *do* want to join us, please *still* let us know in 
advance that you're planning to visit.  There's no such hard deadline as 
for the room reservations, but you will need to "check in" (and there 
will be an "Admission fee") for our gathering with the Linuxhotel staff, 
so please *do* let us know in advance.


We will be updating the Wiki page 
 as more 
information becomes available.


We already have one sponsor for the event - CFD.direct have kindly 
offered to sponsor the Pizzas on Friday evening - but the more, the 
merrier, so if you know someone willing and able to co-sponsor the 
event, please let us know at  as well. 
Whether they wish to send us some "swag" with their company branding, or 
pledge money that we can use to lower dining and lodging costs for our 
participants (or to lower their health risks by providing masks, 
sanitizers and free testing), their sponsorship is greatly appreciated.


Sincerely,
Stefan Baur, "X2Go: The Gathering" event organizer
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Re: [X2Go-User] x2go-user Digest, Vol 119, Issue 3

[sairuk]

on a wayland based client machine QT_QPA_PLATFORM=xcb does permit the
client to run somewhat, however when I was testing this some time ago two
problems resulted in an unusable experience
- client window resizing eventually stopped worked i.e dragging, fullscreen
etc
- keyboard input was lost in the client window

arguably these may have the same root cause, my testing was only out of
curiosity so it wasn't exhaustive. I eventually reverted to X11 for this
and other performance reasons generally

Closing the client whilst running on wayland and restarting the client
worked for a time then the same problems would occur.

Client machine was KDE, I am not sure what their wayland implementation was
at the time.I have not motivation to move to wayland as x2go is my primary
interface locally.

sai


On Wed, 22 May 2024 at 20:15, Ulrich Sibiller 
wrote:

> Hm,
>
> is this bug about the x2goclient or is about NX or even kdrive? A lot
> of guessing here
>
> On Stackoverflow
> (
> https://stackoverflow.com/questions/21488072/what-is-the-use-of-various-qt-platform-plugins
> )
> I find this regarding  QT_QPA_PLATFORM:
>
> xcb - Runs on an X11 server and is integrated into the X11 windowing
> environment. Generally it won't behave correctly without a window
> manager running as well. Can be made to work on Windows, given a
> Windows implementation of xlib, if you want to, say, serve
> applications from a Windows server to X11 thin terminals (typically
> Unix boxes).
>
> So if the user has Wayland this is the wrong setting for the client
> side, at least for the x2go client qt code. Depending on XWayland
> seems wrong to me here.
>
> Clients inside the nx session are talking to the remote X server and
> would require Xwayland. So I _think_ the only component that should
> run with XWayland is the nxproxy. Setting the var you mentioned will
> have the side effect of nxproxy finding the XWayland X-server that was
> started for x2goclient. So a quick test would be to replace nxproxy by
> a wrapper script that runs nxproxy with XWayland. I have no experience
> in this wayland stuff, so I may be totally wrong. Until now I was
> under the impression that XWayland is starts automatically if a client
> tries to open a Display.
>
> Uli
>
>
> On Wed, May 22, 2024 at 8:15 AM Mike Gabriel
>  wrote:
> >
> > HI
> >
> > On  Mo 20 Mai 2024 21:34:47 CEST, Ulrich Sibiller wrote:
> >
> > >> Hi,
> > >>
> > >> I can't troubleshoot this issue. I have removed X2goclient from the
> > >> Debian Stable (Bookworm) install, including all config, but when
> > >> installing it fresh, it still does crash with a Segsev, is this bug
> > >> known? I can't use X2go anymore on Linux, it just fails, without a way
> > >> to find out what breaks. This issue has blocked me for many months
> > >> now, it works on Windows, but most of my machines are running Linux.
> > >>
> > >> Anybody have an idea what I can try next?
> > >>
> > >> Thanks,
> > >>
> > >> Markus
> >
> > > Hello,
> > >
> > > your bug report is a bit "unspecific". What desktop environment /
> window
> > > manager are you using? What kind of session? Where are you connecting
> to?
> > > How is your session configured? Have you tried pyhoca-cli and / or
> > > pyhoca-gui?
> > >
> > > Uli
> > >
> > > On Mon, May 20, 2024 at 3:54 AM Sagittarius-A Black Hole <
> > > nigrat...@gmail.com> wrote:
> > >
> >
> > Maybe it is about this issue?
> > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042816
> >
> > What is the best approach to address this. As X2Go Client interacts
> > with the remote X session, it surely would make sense to launch the
> > complete X2Go Client process via QT_QPA_PLATFORM=xcb and require
> > XWayland to run. Is that a viable approach? Where should we enforce
> > that (that being the switched from Wayland display to X11 display)?
> >
> > Mike
> > --
> >
> > DAS-NETZWERKTEAM
> > c\o Technik- und Ökologiezentrum Eckernförde
> > Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde
> > mobile: +49 (1520) 1976 148
> > landline: +49 (4351) 850 8940
> >
> > GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
> > mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de
> >
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Re: [X2Go-User] x2go-user Digest, Vol 119, Issue 3

[Ulrich Sibiller]

Hm,

is this bug about the x2goclient or is about NX or even kdrive? A lot
of guessing here

On Stackoverflow
(https://stackoverflow.com/questions/21488072/what-is-the-use-of-various-qt-platform-plugins)
I find this regarding  QT_QPA_PLATFORM:

xcb - Runs on an X11 server and is integrated into the X11 windowing
environment. Generally it won't behave correctly without a window
manager running as well. Can be made to work on Windows, given a
Windows implementation of xlib, if you want to, say, serve
applications from a Windows server to X11 thin terminals (typically
Unix boxes).

So if the user has Wayland this is the wrong setting for the client
side, at least for the x2go client qt code. Depending on XWayland
seems wrong to me here.

Clients inside the nx session are talking to the remote X server and
would require Xwayland. So I _think_ the only component that should
run with XWayland is the nxproxy. Setting the var you mentioned will
have the side effect of nxproxy finding the XWayland X-server that was
started for x2goclient. So a quick test would be to replace nxproxy by
a wrapper script that runs nxproxy with XWayland. I have no experience
in this wayland stuff, so I may be totally wrong. Until now I was
under the impression that XWayland is starts automatically if a client
tries to open a Display.

Uli


On Wed, May 22, 2024 at 8:15 AM Mike Gabriel
 wrote:
>
> HI
>
> On  Mo 20 Mai 2024 21:34:47 CEST, Ulrich Sibiller wrote:
>
> >> Hi,
> >>
> >> I can't troubleshoot this issue. I have removed X2goclient from the
> >> Debian Stable (Bookworm) install, including all config, but when
> >> installing it fresh, it still does crash with a Segsev, is this bug
> >> known? I can't use X2go anymore on Linux, it just fails, without a way
> >> to find out what breaks. This issue has blocked me for many months
> >> now, it works on Windows, but most of my machines are running Linux.
> >>
> >> Anybody have an idea what I can try next?
> >>
> >> Thanks,
> >>
> >> Markus
>
> > Hello,
> >
> > your bug report is a bit "unspecific". What desktop environment / window
> > manager are you using? What kind of session? Where are you connecting to?
> > How is your session configured? Have you tried pyhoca-cli and / or
> > pyhoca-gui?
> >
> > Uli
> >
> > On Mon, May 20, 2024 at 3:54 AM Sagittarius-A Black Hole <
> > nigrat...@gmail.com> wrote:
> >
>
> Maybe it is about this issue?
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042816
>
> What is the best approach to address this. As X2Go Client interacts
> with the remote X session, it surely would make sense to launch the
> complete X2Go Client process via QT_QPA_PLATFORM=xcb and require
> XWayland to run. Is that a viable approach? Where should we enforce
> that (that being the switched from Wayland display to X11 display)?
>
> Mike
> --
>
> DAS-NETZWERKTEAM
> c\o Technik- und Ökologiezentrum Eckernförde
> Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde
> mobile: +49 (1520) 1976 148
> landline: +49 (4351) 850 8940
>
> GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
> mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de
>
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Re: [X2Go-User] x2go-user Digest, Vol 119, Issue 3

[Mike Gabriel]

HI

On  Mo 20 Mai 2024 21:34:47 CEST, Ulrich Sibiller wrote:


Hi,

I can't troubleshoot this issue. I have removed X2goclient from the
Debian Stable (Bookworm) install, including all config, but when
installing it fresh, it still does crash with a Segsev, is this bug
known? I can't use X2go anymore on Linux, it just fails, without a way
to find out what breaks. This issue has blocked me for many months
now, it works on Windows, but most of my machines are running Linux.

Anybody have an idea what I can try next?

Thanks,

Markus



Hello,

your bug report is a bit "unspecific". What desktop environment / window
manager are you using? What kind of session? Where are you connecting to?
How is your session configured? Have you tried pyhoca-cli and / or
pyhoca-gui?

Uli

On Mon, May 20, 2024 at 3:54 AM Sagittarius-A Black Hole <
nigrat...@gmail.com> wrote:



Maybe it is about this issue?
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042816

What is the best approach to address this. As X2Go Client interacts  
with the remote X session, it surely would make sense to launch the  
complete X2Go Client process via QT_QPA_PLATFORM=xcb and require  
XWayland to run. Is that a viable approach? Where should we enforce  
that (that being the switched from Wayland display to X11 display)?


Mike
--

DAS-NETZWERKTEAM
c\o Technik- und Ökologiezentrum Eckernförde
Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde
mobile: +49 (1520) 1976 148
landline: +49 (4351) 850 8940

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de



pgpGPwBSR2sxB.pgp
Description: Digitale PGP-Signatur
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Re: [X2Go-User] x2go-user Digest, Vol 119, Issue 3

[Ulrich Sibiller]

Hello,

your bug report is a bit "unspecific". What desktop environment / window
manager are you using? What kind of session? Where are you connecting to?
How is your session configured? Have you tried pyhoca-cli and / or
pyhoca-gui?

Uli

On Mon, May 20, 2024 at 3:54 AM Sagittarius-A Black Hole <
nigrat...@gmail.com> wrote:

> Hi,
>
> I can't troubleshoot this issue. I have removed X2goclient from the
> Debian Stable (Bookworm) install, including all config, but when
> installing it fresh, it still does crash with a Segsev, is this bug
> known? I can't use X2go anymore on Linux, it just fails, without a way
> to find out what breaks. This issue has blocked me for many months
> now, it works on Windows, but most of my machines are running Linux.
>
> Anybody have an idea what I can try next?
>
> Thanks,
>
> Markus
>
> On Wed, 6 Mar 2024 at 03:00,  wrote:
> >
> > Send x2go-user mailing list submissions to
> > x2go-user@lists.x2go.org
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > https://lists.x2go.org/listinfo/x2go-user
> > or, via email, send a message with subject or body 'help' to
> > x2go-user-requ...@lists.x2go.org
> >
> > You can reach the person managing the list at
> > x2go-user-ow...@lists.x2go.org
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of x2go-user digest..."
> >
> >
> > Today's Topics:
> >
> >1. SIGSEGV (Address boundary error) x2Go Client 4.1.2.3...
> >   (Sagittarius-A Black Hole)
> >
> >
> > --
> >
> > Message: 1
> > Date: Tue, 5 Mar 2024 19:37:44 -0800
> > From: Sagittarius-A Black Hole 
> > To: x2go-user@lists.x2go.org
> > Subject: [X2Go-User] SIGSEGV (Address boundary error) x2Go Client
> > 4.1.2.3...
> > Message-ID:
> > <
> caok18jzmccoc6-sppg_ruj03kfx9yj38kyrswl-q2wpqzu7...@mail.gmail.com>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > Hi,
> >
> > I can' start sessions on my Debian Bookworm system, all attempts,
> > resumes end in a SIGSEGV crash:
> >
> > x2go-DEBUG-../src/onmainwindow.cpp:12022> "Searching proxy window:
> > X2GO-probrowny-50-1709695236_stDKDE_dp32"
> > x2go-DEBUG-../src/onmainwindow.cpp:13646> "Searching window with
> > title: X2GO-probrowny-50-1709695236_stDKDE_dp32"
> > fish: Job 1, 'x2goclient --debug' terminated by signal SIGSEGV
> > (Address boundary error)
> >
> > When I do this from a Windows machine, it works without problems.
> >
> > How can I debug this further?
> >
> > Thanks,
> >
> > Markus
> >
> > --
> > Por sperto kaj lerno ne sufiĉas eterno.
> >
> >
> > --
> >
> > Subject: Digest Footer
> >
> > ___
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> > x2go-user@lists.x2go.org
> > https://lists.x2go.org/listinfo/x2go-user
> >
> >
> > --
> >
> > End of x2go-user Digest, Vol 119, Issue 3
> > *
>
>
>
> --
> Por sperto kaj lerno ne sufiĉas eterno.
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Re: [X2Go-User] x2go-user Digest, Vol 119, Issue 3

[Sagittarius-A Black Hole]

Hi,

I can't troubleshoot this issue. I have removed X2goclient from the
Debian Stable (Bookworm) install, including all config, but when
installing it fresh, it still does crash with a Segsev, is this bug
known? I can't use X2go anymore on Linux, it just fails, without a way
to find out what breaks. This issue has blocked me for many months
now, it works on Windows, but most of my machines are running Linux.

Anybody have an idea what I can try next?

Thanks,

Markus

On Wed, 6 Mar 2024 at 03:00,  wrote:
>
> Send x2go-user mailing list submissions to
> x2go-user@lists.x2go.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> https://lists.x2go.org/listinfo/x2go-user
> or, via email, send a message with subject or body 'help' to
> x2go-user-requ...@lists.x2go.org
>
> You can reach the person managing the list at
> x2go-user-ow...@lists.x2go.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of x2go-user digest..."
>
>
> Today's Topics:
>
>1. SIGSEGV (Address boundary error) x2Go Client 4.1.2.3...
>   (Sagittarius-A Black Hole)
>
>
> --
>
> Message: 1
> Date: Tue, 5 Mar 2024 19:37:44 -0800
> From: Sagittarius-A Black Hole 
> To: x2go-user@lists.x2go.org
> Subject: [X2Go-User] SIGSEGV (Address boundary error) x2Go Client
> 4.1.2.3...
> Message-ID:
> 
> Content-Type: text/plain; charset="UTF-8"
>
> Hi,
>
> I can' start sessions on my Debian Bookworm system, all attempts,
> resumes end in a SIGSEGV crash:
>
> x2go-DEBUG-../src/onmainwindow.cpp:12022> "Searching proxy window:
> X2GO-probrowny-50-1709695236_stDKDE_dp32"
> x2go-DEBUG-../src/onmainwindow.cpp:13646> "Searching window with
> title: X2GO-probrowny-50-1709695236_stDKDE_dp32"
> fish: Job 1, 'x2goclient --debug' terminated by signal SIGSEGV
> (Address boundary error)
>
> When I do this from a Windows machine, it works without problems.
>
> How can I debug this further?
>
> Thanks,
>
> Markus
>
> --
> Por sperto kaj lerno ne sufiĉas eterno.
>
>
> --
>
> Subject: Digest Footer
>
> ___
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>
>
> --
>
> End of x2go-user Digest, Vol 119, Issue 3
> *



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Re: [X2Go-User] x2go for wayland

[Ulrich Sibiller]

Maybe worth a try.

I am pretty astonished that this (quite new) tool still uses an Imakefile
;-)

Uli

On Mon, Apr 29, 2024 at 7:00 PM Hanno Foest  wrote:

> On Fri, Apr 26, 2024 at 10:10:34AM -0400, Neal Becker wrote:
>
> > I'm curious if there will be something like x2go for wayland.
>
> I have recently come across "twelveto11"
>
> https://sourceforge.net/p/twelveto11/code/HEAD/tree/README
>
> which seems to attempt running Wayland applications on an X server. I
> would guess that could work on X2go, too. (I don't have Wayland anywhere
> so I couldn't try)
>
> Hanno
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Re: [X2Go-User] x2go for wayland

[Hanno Foest]

On Fri, Apr 26, 2024 at 10:10:34AM -0400, Neal Becker wrote:

> I'm curious if there will be something like x2go for wayland.

I have recently come across "twelveto11"

https://sourceforge.net/p/twelveto11/code/HEAD/tree/README

which seems to attempt running Wayland applications on an X server. I
would guess that could work on X2go, too. (I don't have Wayland anywhere
so I couldn't try)

Hanno
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Re: [X2Go-User] X2GO client admin lock

[Urbanovits György]

Thanks a lot Stefan that is good way for first step

All my best
George

2024. 04. 29, hétfő keltezéssel 12.40-kor Stefan Baur ezt írta:
Am 01.03.24 um 14:45 schrieb Urbanovits György:
Hello,

My idea to use X2GO in corp environment on linux & windoze, and I have complain 
about possible miss-configuration or "accidental settings" of client setting by 
users. There is any existing solution to lock client settings (all settings) by 
users?
For example make connection, configuration setting to set ready 
only/dimmed-grayed out exempt someone who have admin rights?

any advise, suggestion welcome

To avoid accidental changes, you can use --no-menu and
--no-session-edit, as explained in "man x2goclient", and store the
sessions file on a read-only network share.
--session-conf=/path/to/sessions-file is the parameter for that, also
explained in the manpage.

Or you can use a session broker setup.

However, there is no way of stopping a user that deliberately wants to
mess with the configuration.
They will always find a way to run x2goclient without any
parameters/with their custom parameters, bypassing your restrictions.

I guess the only way around it might (i.e., still no guarantee) be the
HTML5Client in a rather elaborate setup, where users do not have direct
access to the X2GoServer via IP, only to the HTML5Client. But, the
HTML5Client is neither release-ready nor feature-complete yet ...

Kind Regards,
Stefan Baur

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Re: [X2Go-User] x2go for wayland

[Ulrich Sibiller]

Hi,

there's no sense in using x2gokdrive or x2goagent/nxagent with Wayland
because both are X servers. You can use them today (for applications
"speaking" X only) by using the Xwayland on the client, since that is where
the resulting X protocol messages need to be handled. Pure Wayland
applications will not work with this setup (although I don't even know if
such applications exist at all).
https://unix.stackexchange.com/questions/482129/can-i-run-wayland-application-in-x
states
that Weston is able to work as a proxy between wayland apps and X11.

So AFAIU a solution with Waypipe would be something completely different
where x2go only handles the session management.

I have tried to put this into a table (AFAIU). In || I list the the used
protocol:
X: standard X11 protocol
NX: nx compressed protocol
WL: Wayland
WP: Waypipe
XK: x2gokdrive protocol
XS: X11 tunneled through ssh

These are the possible communications ways:
  ServerClient
1 XApp   |X11|  Xserver
2 XApp   |X11| sshd   |XS|  ssh  |X11|
Xserver
3 XApp   |X11| nxagent|NX|  nxproxy  |X11|
Xserver
4 XApp   |X11| x2gokdrive |XK|  x2gokdriveclient |X11|
Xserver
5 XApp   |X11| nxagent|NX|  nxproxy  |X11|
Xwayland |WL| Wayland
6 XApp   |X11| x2gokdrive |XK|  x2gokdriveclient |X11|
Xwayland |WL| Wayland
7 WaylandApp |WL|  Waypipe|WP|  Waypipe  |WL|
Wayland
8 WaylandApp |WL|  Weston |X11| nxagent |NX|nxproxy  |X11|
Xserver
9 WaylandApp |WL|  Waypipe|WP|  Waypipe  |WL|
Weston   |X11| Xserver

So we have to setup anything on the server that outputs one of the four
protocols: XS, NX, XK, WP. On the client side we have to route these four
protocols to either display them on an Xserver or a Wayland server. The
less components between app and server the better the experience. But to
support both server types and both app types there are some compromises
required.

I am not into any Wayland or Waypipe stuff, so correct me if I'm wrong.

Uli
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Re: [X2Go-User] X2GO client admin lock

[Stefan Baur]

Am 29.04.24 um 08:02 schrieb Ulrich Sibiller:

I think something like that is possible using the x2go broker.


No. Not in the sense that it can be locked down completely against a
"hostile" user. There are ways to provide sane defaults, though.
(See my reply to the original post for a lengthy answer.)

Kind Regards,
Stefan Baur

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Re: [X2Go-User] X2GO client admin lock

[Stefan Baur]

Am 01.03.24 um 14:45 schrieb Urbanovits György:

Hello,

My idea to use X2GO in corp environment on linux & windoze, and I have complain about 
possible miss-configuration or "accidental settings" of client setting by users. 
There is any existing solution to lock client settings (all settings) by users?
For example make connection, configuration setting to set ready 
only/dimmed-grayed out exempt someone who have admin rights?

any advise, suggestion welcome


To avoid accidental changes, you can use --no-menu and
--no-session-edit, as explained in "man x2goclient", and store the
sessions file on a read-only network share.
--session-conf=/path/to/sessions-file is the parameter for that, also
explained in the manpage.

Or you can use a session broker setup.

However, there is no way of stopping a user that deliberately wants to
mess with the configuration.
They will always find a way to run x2goclient without any
parameters/with their custom parameters, bypassing your restrictions.

I guess the only way around it might (i.e., still no guarantee) be the
HTML5Client in a rather elaborate setup, where users do not have direct
access to the X2GoServer via IP, only to the HTML5Client. But, the
HTML5Client is neither release-ready nor feature-complete yet ...

Kind Regards,
Stefan Baur

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Re: [X2Go-User] x2go for wayland

[Stefan Baur]

Hi Neal,

Am 26.04.24 um 16:10 schrieb Neal Becker:

I'm curious if there will be something like x2go for wayland.  I've been
playing with waypipe.  It does appear to at least work for allowing a remote
application running on wayland to be used on my local machine.  Not sure if
it performs as well on low-bandwidth connections as x2go using NX, but at
least seems usable in some limited testing.

What's missing is persistent sessions and remote desktop.  While waypipe
allows running a remote app, it doesn't AFAIK allow a remote desktop, nor
persistence.

A bit of googling found nothing useful.  Anyone know if there is work in
this area?


Currently, we do not have any volunteer working on this, to my
knowledge, and no paid developers, either.
Unless Covid numbers play a prank on us on short notice, we'll be
hosting X2Go: The Gathering 2024 at Linuxhotel Essen by the end of June.
(A wiki page for the event already exists, the official announce will
follow soon). I hope that we'll be able to discuss the future of a
possible X2Go-Wayland-Integration at that event.
My rough guess is that it will involve X2Go-KDrive, while NX will not be
supported for Wayland connections. And yes, somehow merging waypipe with
X2Go's session persistence features and client GUI is probably the way
to go.

As always: Sponsors welcome, patches welcome ...

Kind Regards,
Stefan Baur

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Re: [X2Go-User] How to Pass SSH Options From X2goclient?

[Peter Keller]

On 29/04/2024 01:38, Jon Forrest wrote:

On 4/28/2024 2:54 AM, Ulrich Sibiller wrote:


Not directly, but libssh (partly) read your ssh config. So you can
add a host stanza with the settings for your  destination host
there.


Are you quite sure? 


It definitely reads it, I have something like:

Host xyz
    HostName example.com
    ... other options ...

and I can tell X2Go to connect to host xyz. However, as Ulrich points 
out X2Go doesn't handle the configuration in exactly the same way as 
ssh, for example "Include" directives are handled slightly differently.


I think that the best approach with your problem is probably to use 
ssh-agent and ControlPath directives. Then use your command-line ssh to 
establish the connection and X2Go can hopefully make use of that, even 
though you have such an extreme mismatch between ssh versions. You can 
try something like the following in .ssh/config:


Host example.com
    ControlPath /tmp/ssh-ctl-%l-%h-%p-%r
    ControlMaster auto
    ControlPersist 600

%C can be used in place of %l-%h-%p-%r, but the latter makes it easier 
to see which control socket belongs to a particular connection. (Do 'man 
ssh_config' for the full details on these directives.)



With the following in my ssh config file

Host example.com
    PubkeyAcceptedAlgorithms +ssh-rsa
    HostKeyAlgorithms=+ssh-rsa

I can run ssh on the command line successfully but trying to start an 
x2go

session results in

kex error : no match for method server host key algo: server 
[ssh-rsa,ssh-dss], client [rsa-sha2-512,rsa-sh
a2-256,ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,sk-ssh-ed25...@openssh.com,s 


k-ecdsa-sha2-nistp...@openssh.com]

Does x2go actually use the system ssh executable (e.g. /usr/bin/ssh)?


I'm pretty sure that it doesn't


The reason I'm asking is because I did an experiment and renamed
ssh to xxx. I got the same result, shown above, when running the 
x2goclient!

This was a surprise.


 which explains what you observed here.

I hope that this helps,

Peter.



Thanks,
Jon



Jon Forrest mailto:nob...@gmail.com>> schrieb am
Sa., 27. Apr. 2024, 20:30:

Due to reasons too sad to describe, I need to X2go from a modern
Fedora 40 system to a Ubuntu 10.04 (!) system.

Running ssh from the command line fails with the message

Unable to negotiate with XX.XX.XX.XX port 22: no matching host key
type found. Their offer: ssh-rsa,ssh-dss

After some work I got this to work by adding

-oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedAlgorithms=+ssh-rsa

to the ssh command line.

My question is how can I add these options to the ssh command that
X2go executes on the client?

Cordially, Jon Forrest 
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Re: [X2Go-User] Lots of artifacts with deb12 server

[Ulrich Sibiller]

See https://github.com/ArcticaProject/nx-libs/issues/802 for n explanatio
of the compression settings.

Uli

E. N.  schrieb am Sa., 2. März 2024, 16:37:

> Hi all,
>
> getting a lot of artifacts on a machine I upgraded from deb11+x2go repos
> server packages to deb12+x2go distro packages. (v4.1.0.3-7).
>
> I though about going for x2go repos, but deb12/bookworm isn't mentioned,
> should I go for the x2go repos or stick to the deb packages?
>
> Client is Ubuntu 22.04LTS with v4.1.2.2 which has worked alright for
> various
> x2go servers so far.
>
> Server hardware changed, too, before was Ryzen 3000, now is intel N100 in
> case
> that matters.
> Connection settings are LAN plus default compression method 16m-jpeg, tried
> 2m-jpeg, too. (Too many options btw or too little explanation on
> differences)
>
> Appreciate any advice.
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Re: [X2Go-User] X2GO client admin lock

[Ulrich Sibiller]

I think something like that is possible using the x2go broker.

Uli

Urbanovits György  schrieb am Fr., 1. März
2024, 14:45:

> Hello,
>
> My idea to use X2GO in corp environment on linux & windoze, and I have
> complain about possible miss-configuration or "accidental settings" of
> client setting by users. There is any existing solution to lock client
> settings (all settings) by users?
> For example make connection, configuration setting to set ready
> only/dimmed-grayed out exempt someone who have admin rights?
>
> any advise, suggestion welcome
>
> thanks
> George Urbanovits
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Re: [X2Go-User] How to Pass SSH Options From X2goclient?

[Ulrich Sibiller]

Well, that's why I wrote 'partly'. I simply don't know what keys libssh can
understand. Does it work if you leave out the host line and make these
options general ones?

Make sure you have the newest available x2goclient, maybe try to recompile
with a newer libssh.

Uli


Jon Forrest  schrieb am Mo., 29. Apr. 2024, 02:39:

> On 4/28/2024 2:54 AM, Ulrich Sibiller wrote:
>
> > Not directly, but libssh (partly) read your ssh config. So you can
> > add a host stanza with the settings for your  destination host
> > there.
>
> Are you quite sure? With the following in my ssh config file
>
> Host example.com
>  PubkeyAcceptedAlgorithms +ssh-rsa
>  HostKeyAlgorithms=+ssh-rsa
>
> I can run ssh on the command line successfully but trying to start an x2go
> session results in
>
> kex error : no match for method server host key algo: server
> [ssh-rsa,ssh-dss], client [rsa-sha2-512,rsa-sh
>
> a2-256,ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,
> sk-ssh-ed25...@openssh.com,s
> k-ecdsa-sha2-nistp...@openssh.com]
>
> Does x2go actually use the system ssh executable (e.g. /usr/bin/ssh)?
> The reason I'm asking is because I did an experiment and renamed
> ssh to xxx. I got the same result, shown above, when running the
> x2goclient!
> This was a surprise.
>
> Thanks,
> Jon
>
>
> > Jon Forrest mailto:nob...@gmail.com>> schrieb am
> > Sa., 27. Apr. 2024, 20:30:
> >
> > Due to reasons too sad to describe, I need to X2go from a modern
> > Fedora 40 system to a Ubuntu 10.04 (!) system.
> >
> > Running ssh from the command line fails with the message
> >
> > Unable to negotiate with XX.XX.XX.XX port 22: no matching host key
> > type found. Their offer: ssh-rsa,ssh-dss
> >
> > After some work I got this to work by adding
> >
> > -oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedAlgorithms=+ssh-rsa
> >
> > to the ssh command line.
> >
> > My question is how can I add these options to the ssh command that
> > X2go executes on the client?
> >
> > Cordially, Jon Forrest
> > ___ x2go-user mailing
> > list x2go-user@lists.x2go.org 
> > https://lists.x2go.org/listinfo/x2go-user
> > 
> >
>
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Re: [X2Go-User] How to Pass SSH Options From X2goclient?

[Jon Forrest]

On 4/28/2024 2:54 AM, Ulrich Sibiller wrote:


Not directly, but libssh (partly) read your ssh config. So you can
add a host stanza with the settings for your  destination host
there.


Are you quite sure? With the following in my ssh config file

Host example.com
PubkeyAcceptedAlgorithms +ssh-rsa
HostKeyAlgorithms=+ssh-rsa

I can run ssh on the command line successfully but trying to start an x2go
session results in

kex error : no match for method server host key algo: server [ssh-rsa,ssh-dss], 
client [rsa-sha2-512,rsa-sh
a2-256,ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,sk-ssh-ed25...@openssh.com,s
k-ecdsa-sha2-nistp...@openssh.com]

Does x2go actually use the system ssh executable (e.g. /usr/bin/ssh)?
The reason I'm asking is because I did an experiment and renamed
ssh to xxx. I got the same result, shown above, when running the x2goclient!
This was a surprise.

Thanks,
Jon



Jon Forrest mailto:nob...@gmail.com>> schrieb am
Sa., 27. Apr. 2024, 20:30:

Due to reasons too sad to describe, I need to X2go from a modern
Fedora 40 system to a Ubuntu 10.04 (!) system.

Running ssh from the command line fails with the message

Unable to negotiate with XX.XX.XX.XX port 22: no matching host key
type found. Their offer: ssh-rsa,ssh-dss

After some work I got this to work by adding

-oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedAlgorithms=+ssh-rsa

to the ssh command line.

My question is how can I add these options to the ssh command that
X2go executes on the client?

Cordially, Jon Forrest 
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Re: [X2Go-User] How to Pass SSH Options From X2goclient?

[Ulrich Sibiller]

Not directly, but libssh (partly) read your ssh config. So you can add a
host stanza with the settings for your  destination host there.

Uli

Jon Forrest  schrieb am Sa., 27. Apr. 2024, 20:30:

> Due to reasons too sad to describe, I need to X2go from a
> modern Fedora 40 system to a Ubuntu 10.04 (!) system.
>
> Running ssh from the command line fails with the message
>
> Unable to negotiate with XX.XX.XX.XX port 22: no matching host key type
> found. Their offer: ssh-rsa,ssh-dss
>
> After some work I got this to work by adding
>
> -oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedAlgorithms=+ssh-rsa
>
> to the ssh command line.
>
> My question is how can I add these options to the ssh command
> that X2go executes on the client?
>
> Cordially,
> Jon Forrest
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[X2Go-User] How to Pass SSH Options From X2goclient?

[Jon Forrest]

Due to reasons too sad to describe, I need to X2go from a
modern Fedora 40 system to a Ubuntu 10.04 (!) system.

Running ssh from the command line fails with the message

Unable to negotiate with XX.XX.XX.XX port 22: no matching host key type found. 
Their offer: ssh-rsa,ssh-dss

After some work I got this to work by adding

-oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedAlgorithms=+ssh-rsa

to the ssh command line.

My question is how can I add these options to the ssh command
that X2go executes on the client?

Cordially,
Jon Forrest
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[X2Go-User] x2go for wayland

[Neal Becker]

I'm curious if there will be something like x2go for wayland.  I've been 
playing with waypipe.  It does appear to at least work for allowing a remote 
application running on wayland to be used on my local machine.  Not sure if 
it performs as well on low-bandwidth connections as x2go using NX, but at 
least seems usable in some limited testing.

What's missing is persistent sessions and remote desktop.  While waypipe 
allows running a remote app, it doesn't AFAIK allow a remote desktop, nor 
persistence.

A bit of googling found nothing useful.  Anyone know if there is work in 
this area?

Thanks,
Neal

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Re: [X2Go-User] Mounting USB drives in remote computer

[Mike Gabriel]

Hi Kalle,

On  Mi 10 Apr 2024 08:30:06 CEST, Kalle Tuulos wrote:


Hello

I'm using Ubuntu 20.04 with LXQt (i.e., Lubuntu) on the remote computer.
When I'm using the computer locally and plug in an USB drive, It will be
automatically mounted and shown in file explorer. But when I'm using the
computer remotely, I'll just get a prompt saying "Error: Not authorized to
perform operation"

Could someone help me to configure the remote computer so that when I plug
in an USB drive, it would behave as I would use the computer locally?

Best regards and greetings from Finland

Kalle


do you want to plugin the USB flashdrive into the X2Go client computer  
or into remote computer?


Mike
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Re: [X2Go-User] Mounting USB drives in remote computer

[Hanno Foest]

Can't help you in detail, but I'm quite sure your issue is with
policykit (polkit) treating remote users differently from local ones.
A quick web search got me the following:

https://askubuntu.com/questions/1256669/configuring-polkit-to-allow-complete-control-remotely

but I can't be sure this solution is correct since I don't run your
flavour of Linux.

HTH,
Hanno.

On Wed, Apr 10, 2024 at 09:30:06AM +0300, Kalle Tuulos wrote:
>Hello
>I'm using Ubuntu 20.04 with LXQt (i.e., Lubuntu) on the remote
>computer. When I'm using the computer locally and plug in an USB drive,
>It will be automatically mounted and shown in file explorer. But when
>I'm using the computer remotely, I'll just get a prompt saying "Error:
>Not authorized to perform operation"
>Could someone help me to configure the remote computer so that when I
>plug in an USB drive, it would behave as I would use the computer
>locally?
>Best regards and greetings from Finland
>Kalle

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[X2Go-User] Mounting USB drives in remote computer

[Kalle Tuulos]

Hello

I'm using Ubuntu 20.04 with LXQt (i.e., Lubuntu) on the remote computer.
When I'm using the computer locally and plug in an USB drive, It will be
automatically mounted and shown in file explorer. But when I'm using the
computer remotely, I'll just get a prompt saying "Error: Not authorized to
perform operation"

Could someone help me to configure the remote computer so that when I plug
in an USB drive, it would behave as I would use the computer locally?

Best regards and greetings from Finland

Kalle
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[X2Go-User] Next Event/Upcoming X2Go and orca e.V. Sponsorship Drive - Starting Tomorrow, 2024-03-26, to 2024-03-28

[Stefan Baur]

Dear $ALL,

X2Go will be present at Linux-Info-Day
 in Augsburg, Germany on Saturday,
April 20th.

At this event, we will have a booth where we will demo X2Go-KDrive, as
well as the HTML5Client beta and X2Go's integration into the latest
Remmina client.

We're still waiting to hear back from the Linux-Info-Day crew regarding
a talk slot - we have submitted a CfP for a talk regarding how to
incorporate SSH, 2FA and X2Go into a simple, but effective Ransomware
protection for vintage as well as current Microsoft Windows versions.

If you're planning to attend and/or are in the area, feel free to stop
by and say hi! Attendance is free, and you do not need to register
beforehand.

We are trying to cover the costs for our two volunteers/orca e.V.
members (Mihai and me) via orca e.V., the registered association that
X2Go belongs to, but for that, we will need your help in the form of
donations*.

Sadly, funding for X2Go events has tanked since we separated it from the
main X2Go donation pool - we haven't received a single donation for our
event budget yet.
Which means that not only the trip to Linux Info Day is still in need of
funding, but also the previous one to Linux Days Chemnitz. :'(

The situation for our infrastructure budget is a little better, but we
could use some help there as well.

You can find our donation pages here:
X2Go Events (English):

X2Go Events (German):

X2Go Infrastructure (English):

X2Go Infrastructure (German):


It would be really cool if you could send some $$$/€€€/£££/¥¥¥ our way,
so we can keep advocating for X2Go and free remote desktop/remote
application projects in general.
We can accept donations via PayPal, Credit Card, Direct Debit,
giropay/paydirect and wire transfer. Best of all, donations towards X2Go
(and orca e.V., our umbrella org) are usually tax deductible for German
tax subjects.

Note that there is a special sponsorship drive sponsored by the
Commercial and Savings Bank Ulm, where the orca (and thus X2Go) bank
account resides:
Projects receiving donations made between Tuesday, 2024-03-26 (starting
09:00 CET) and Thursday, 2024-03-28 (ending 23:59 CET) will receive
additional funding from a pool of 10 000 Euro. So the more you donate
during this timeframe, the higher the share we'll receive from those 10
000 Euro.

Kind Regards,
Stefan Baur
(with his X2Go Event Planner hat on)

*If times are rough for you and you can't afford to donate, don't feel
bad! You can also help us by forwarding this announcement to whomever
you seem fit - e.g. your local Linux user group, your social media
followers, etc.

If you're on Twitter, you can retweet and like the following to help:
 (English)
 (German)

If you're on BlueSky, you can reskeet and like the following to help:

(English)

(German)

And on Mastodon, you can like and boost the following to help:
 (English)
 (German)

Feel free to copy the text and links of these Tweets to any social media
platform that you are using.

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Re: [X2Go-User] Missing fonts

[Ulrich Sibiller]

Hi,

you need to install them on both server and client.

Uli

On Fri, Mar 22, 2024 at 11:32 AM NICHOLSON, STEPHEN J.
 wrote:
>
> Hi,
>
>
>
> I’m trying to use software called MB-System over X2Go but I seem to be 
> missing fonts. Is there a way I can add these?
>
>
>
> -misc-fixed-bold-r-normal—13-120-75-75-c-70-iso8859-1
>
> -misc-fixed-bold-r-normal—13-125-75-75-c-70-iso8859-1
>
>
>
> MBSystem dependencies need XFonts-100 and I made sure to install every font 
> option when installing X2Go.
>
>
>
> Thanks
>
> Stephen Nicholson
>
> Platforms (Linux/Storage)
>
>
>
> IT Service Desk, Computing & Information Services, Durham University
>
> W: https://servicedesk.durham.ac.uk
>
> LC: 
> https://www.durham.ac.uk/about-us/professional-services/computing-information-services/support/
>
> A:   
> https://outlook.office365.com/owa/calendar/OnlineSurgeries%40durhamuniversity.onmicrosoft.com/bookings
>
>
>
> ___
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[X2Go-User] Missing fonts

[NICHOLSON, STEPHEN J.]

Hi,

I'm trying to use software called MB-System over X2Go but I seem to be missing 
fonts. Is there a way I can add these?

-misc-fixed-bold-r-normal-13-120-75-75-c-70-iso8859-1
-misc-fixed-bold-r-normal-13-125-75-75-c-70-iso8859-1

MBSystem dependencies need XFonts-100 and I made sure to install every font 
option when installing X2Go.

Thanks
Stephen Nicholson
Platforms (Linux/Storage)

IT Service Desk, Computing & Information Services, Durham University
W: https://servicedesk.durham.ac.uk
LC: 
https://www.durham.ac.uk/about-us/professional-services/computing-information-services/support/
A:   
https://outlook.office365.com/owa/calendar/OnlineSurgeries%40durhamuniversity.onmicrosoft.com/bookings

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[X2Go-User] SIGSEGV (Address boundary error) x2Go Client 4.1.2.3...

[Sagittarius-A Black Hole]

Hi,

I can' start sessions on my Debian Bookworm system, all attempts,
resumes end in a SIGSEGV crash:

x2go-DEBUG-../src/onmainwindow.cpp:12022> "Searching proxy window:
X2GO-probrowny-50-1709695236_stDKDE_dp32"
x2go-DEBUG-../src/onmainwindow.cpp:13646> "Searching window with
title: X2GO-probrowny-50-1709695236_stDKDE_dp32"
fish: Job 1, 'x2goclient --debug' terminated by signal SIGSEGV
(Address boundary error)

When I do this from a Windows machine, it works without problems.

How can I debug this further?

Thanks,

Markus

-- 
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Re: [X2Go-User] Lots of artifacts with deb12 server

[Juri Grabowski]

Hello,

if you are using XFCE, then please disable compositing:
/usr/bin/xfconf-query -c xfwm4 -p /general/use_compositing -s false

Best Regards,
Juri Grabowski

P.S.:
https://wiki.x2go.org/doku.php/doc:de-compat
https://gitlab.xfce.org/xfce/xfwm4/-/issues/551
https://gitlab.xfce.org/xfce/xfwm4/-/merge_requests/134
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[X2Go-User] Lots of artifacts with deb12 server

[E. N.]

Hi all,

getting a lot of artifacts on a machine I upgraded from deb11+x2go repos
server packages to deb12+x2go distro packages. (v4.1.0.3-7).

I though about going for x2go repos, but deb12/bookworm isn't mentioned,
should I go for the x2go repos or stick to the deb packages?

Client is Ubuntu 22.04LTS with v4.1.2.2 which has worked alright for various
x2go servers so far.

Server hardware changed, too, before was Ryzen 3000, now is intel N100 in case
that matters.
Connection settings are LAN plus default compression method 16m-jpeg, tried
2m-jpeg, too. (Too many options btw or too little explanation on differences)

Appreciate any advice.
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[X2Go-User] X2GO client admin lock

[Urbanovits György]

Hello,

My idea to use X2GO in corp environment on linux & windoze, and I have complain 
about possible miss-configuration or "accidental settings" of client setting by 
users. There is any existing solution to lock client settings (all settings) by 
users?
For example make connection, configuration setting to set ready 
only/dimmed-grayed out exempt someone who have admin rights?

any advise, suggestion welcome

thanks
George Urbanovits
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[X2Go-User] More kdrive crashes

[Orion Poplawski]

Got a bunch today:

malloc(): unsorted double linked list corrupted

Also:

#7  
#8  0x7f15b3445d0f in sse2_fill () from /lib64/libpixman-1.so.0
#9  0x7f15b342a740 in _pixman_implementation_fill () from
/lib64/libpixman-1.so.0
#10 0x7f15b33e2fcd in pixman_fill () from /lib64/libpixman-1.so.0
#11 0x555c8d41f1d5 in fbFill (pDrawable=pDrawable@entry=0x555c8ef88fd0,
pGC=pGC@entry=0x555c8efc7f20, x=x@entry=0, y=y@entry=0,
width=width@entry=1911,
height=height@entry=1016) at ../include/privates.h:122
#12 0x555c8d41f812 in fbPolyFillRect (pDrawable=0x555c8ef88fd0,
pGC=0x555c8efc7f20,
nrect=, prect=0x555c8f7f2e48) at fbfillrect.c:72
#13 0x555c8d4b678c in damagePolyFillRect (pDrawable=0x555c8ef88fd0,
pGC=0x555c8efc7f20,
nRects=1, pRects=) at damage.c:1224
#14 0x555c8d42d7cf in miPaintWindow (pWin=, prgn=,
what=) at miexpose.c:540
#15 0x555c8d42d4fa in miWindowExposures (pWin=0x555c8ef88fd0,
prgn=0x555c8efc7380)
at miexpose.c:394
#16 0x555c8d43bdce in miHandleValidateExposures (pWin=0x555c8ef88fd0) at
miwindow.c:226
#17 0x555c8d3eb239 in UnmapWindow (pWin=pWin@entry=0x555c8f8f6c50,
fromConfigure=fromConfigure@entry=0) at window.c:2878
#18 0x555c8d3eb33f in DeleteWindow (value=0x555c8f8f6c50, wid=44040209) at
window.c:1088
#19 0x555c8d3e400d in doFreeResource (res=0x555c8f8f6e80, skip=skip@entry=0)
at resource.c:880
#20 0x555c8d3e524c in FreeClientResources (client=0x555c8f9a08f0) at
resource.c:1146
#21 FreeClientResources (client=client@entry=0x555c8f9a08f0) at resource.c:1109
#22 0x555c8d3ffe23 in CloseDownClient (client=0x555c8f9a08f0) at
dispatch.c:3476
#23 0x555c8d400876 in KillAllClients () at dispatch.c:3503
#24 Dispatch () at dispatch.c:511
#25 0x555c8d3c8926 in dix_main (argc=19, argv=0x7ffdd98dda88,
envp=)
at main.c:276

#11 0x555c8d41f1d5 in fbFill (pDrawable=pDrawable@entry=0x555c8ef88fd0,
pGC=pGC@entry=0x555c8efc7f20, x=x@entry=0, y=y@entry=0,
width=width@entry=1911,
height=height@entry=1016) at ../include/privates.h:122
122 return (char *) (*privates) + key->offset;
(gdb) print key
$1 = 2
(gdb) print key->offset
Attempt to extract a component of a value that is not a structure pointer.

There definitely seem to be some memory corruption errors that need to get
addressed.

-- 
Orion Poplawski
he/him/his  - surely the least important thing about me
Manager of IT Systems  720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
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[X2Go-User] x2go client on fedora 40 rc2

[Neal Becker]

I'm trying x2goclient from fedora 40 rc2 client to fedora 39 server.
Connection fails at startup "the remote proxy closed the connection during
negotiation" There should not be any authentication problem as I can ssh
without password.
The client then segfaults.

On the server side, in .x2go/
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#63.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#61.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 121
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 122
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#64 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#63 within 120
seconds.
Loop: 

Re: [X2Go-User] x2goclient on windows

[Stefan Baur]

Hi Geert,


Am 31.01.24 um 17:06 schrieb Witter, Geert:


We want to use the x2goclient on windows. There is currently no download for 
the latest version and the 4.1.2.2 version seems to be unstable when starting 
connections. The 4.1.2.0 version looks to be working OK.
Problem is that all versions have security issues, because some of the dll's 
(like libssh and OpenSSL) are outdated.
Is it planned to have a windows release in the near future that has more 
up-to-date dependencies incorporated?


We are currently severely understaffed on the volunteer side, so both
Windows and macOS Clients won't see a release any time soon.
For Windows, there is a "Beta" build that at least incorporates the
kdriveclient.

However, if you have a business use case, feel free to sponsor the work
on these releases by contracting one of the companies listed here:


Be warned, though, there is quite some technological debt involved, as
no one bothered to sponsor work on this in the last few years, so this
isn't going to be cheap, no matter which one of these companies you
contract.

Basically, the entire build environment needs a proper overhaul, upgrade
to a new Windows client version, etc.

Kind Regards,
Stefan Baur

--
BAUR-ITCS UG (haftungsbeschränkt)
Geschäftsführer: Stefan Baur
Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364
Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243
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Re: [X2Go-User] x2goclient on windows

[Ulrich Sibiller]

Hi,

I am not involved in Releases, so I cannot directly answer your
question. But you can build your own x2goclient on Linux, too (see
https://gitlab.x2go.org/x2go/client/x2goclient/-/blob/master/README.mxe),
which should be easier to setup than a Windows build host. This build
should come with recent versions of those libs. Maybe that's an
option?

Uli

On Wed, Jan 31, 2024 at 5:07 PM Witter, Geert  wrote:
>
> Hello,
>
>
>
> We want to use the x2goclient on windows. There is currently no download for 
> the latest version and the 4.1.2.2 version seems to be unstable when starting 
> connections. The 4.1.2.0 version looks to be working OK.
>
> Problem is that all versions have security issues, because some of the dll’s 
> (like libssh and OpenSSL) are outdated.
>
> Is it planned to have a windows release in the near future that has more 
> up-to-date dependencies incorporated?
>
>
>
> Kind regards,
>
>
>
> Geert Witter
>
> Senior Software Engineer
>
>
>
> Mobile: (NL) +31 6 53 89 61 02
>
>
>
>
>
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[X2Go-User] x2goclient on windows

[Witter, Geert]

Hello,

We want to use the x2goclient on windows. There is currently no download for 
the latest version and the 4.1.2.2 version seems to be unstable when starting 
connections. The 4.1.2.0 version looks to be working OK.
Problem is that all versions have security issues, because some of the dll's 
(like libssh and OpenSSL) are outdated.
Is it planned to have a windows release in the near future that has more 
up-to-date dependencies incorporated?

Kind regards,

Geert Witter
Senior Software Engineer

Mobile: (NL) +31 6 53 89 61 02


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Re: [X2Go-User] error

[richard lucassen]

On Sat, 27 Jan 2024 11:55:36 +0100
richard lucassen  wrote:

> On one of my laptops I am not able to set up a connection to the x2go
> server. When starting a custom desktop:
> 
> ssh-agent startx wmaker

Mea culpa: NO startx in the command:

ssh-agent wmaker

R.

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[X2Go-User] error

[richard lucassen]

On one of my laptops I am not able to set up a connection to the x2go
server. When starting a custom desktop:

ssh-agent startx wmaker

I get the black "x2go" screen and then crash. I see this in the logs:

daemon.warn: Jan 26 11:41:54 /usr/libexec/WindowMaker/wmaker[483025]:
(catchXError(startup.c:118)): warning: internal X error:
RenderBadPicture (invalid Picture parameter) Request code: 139 Request
minor code: 7 Resource ID: 0x4009d9
Error serial: 28162

I have more clients with the same version 4.1.2.2-2+b1 (Debian Testing)
that connect to the same server and do not suffer from this issue.

It is not an x2go problem AFAIK, but can anyone give me a hint where to
start looking for a solution?

Richard.

-- 
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[X2Go-User] Network of Debian 12 workstations, seem to have SSH issues more than X2Go issues

[Nasi Chassoulas]

Hi all,

My first post here. I have spent a few weeks trying to set up X2Go to 
manage a small network of Debian based workstations. Some of them are 
user workstations, some headless servers, some using Gnome (X11 as far 
as possible, not Wayland).


I have had some success accessing user desktops sessions, but I have 
broken this with some sshd_config changes.


I would appreciate any advice. I have checked some logs, with this being 
the most obvious issue.


XSession-x2go: X session started for administrator at Tue 16 Jan 2024 20:51:43 
SAST
dbus-update-activation-environment: setting 
DBUS_SESSION_BUS_ADDRESS=unix:path=/tmp/dbus-kVdJKgUoT3,guid=bc3f454dec8a0f9639cff89f65a6d03f
dbus-update-activation-environment: setting DISPLAY=:51
dbus-update-activation-environment: setting 
XAUTHORITY=/home/administrator/.Xauthority
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
xrdb: Connection reset by peer
xrdb: Can't open display ':51'
xhost:  unable to open display ":51"

In the X2Go client, on some clients I get the 'session select' window, 
on others I get stuck in a password prompt loop.


If its not a basic issue with X, I suspect its with SSH.

I appreciate any help offered. Thanks for the development of a great 
product.


Thanks,

Nasi

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[X2Go-User] only a black screen in the X2Go Session

[Poupart Erwann]

Hi all,

I'm a new user of X2Go.

I have installed the X2Go server on a centos7 VM and a X2Go client on my PC 
(Windows).

When I start a X2Go Session trying with Gnome (GDM active on my server) or even 
with XFCE, I only have a black screen that appears with no window manager or 
anything else to interact.

Is there some specific configuration to do on the server side ?

Thanks by advance for any help.

Regards,

Erwann.

Erwann POUPART

Adjoint MEsures (AME) - Launch Range Mission Manager

Service Acquisition Mesures - CNES/CSG
BP 726 - 97387 Kourou Cedex

[cid:image002.png@01D68121.4245C1A0] +594 594 33 44 57 / 
[cid:image003.png@01D68121.4245C1A0]  +594 694 21 89 58

[cid:image004.png@01D68121.4245C1A0] 
erwann.poup...@cnes.fr

[cid:image005.png@01D68121.4245C1A0] www.cnes-csg.fr


[cid:image006.png@01D68121.4245C1A0]
  [cid:image007.png@01D68121.4245C1A0]  
  [cid:image008.png@01D68121.4245C1A0] 



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Re: [X2Go-User] X2go K Drive Server

[Stuart MacGregor]

Good Afternoon,

I have answered most of my own question. My Ubuntu client was from the 
Ubuntu repo, not the x2go repo. When I added the x2go ppa and updated 
the client, the QT5 drive backend installed and I was able to connect 
using kdrive without changing anything on the server. I will check on 
performance later. My first impression is that it is still a little 
"laggy", though that might just be the wifi connection on the Unbuntu 
client, it is an old laptop circa 2011.


My question is now only about the Windows clients. Is there an update 
available for them to allow connection using kdrive? Is there other 
software that must be downloaded? At the moment they start to connect 
and then immediately disconnect when the "kdrive" box is checked.


Regards

Stuart MacGregor

On 2/1/24 12:08, Stuart MacGregor wrote:


Good Morning,

Excuse me for my ignorance/, /but how accurate/up to date is the 
kdrive section of the x2go wiki? It hasn't changed in 3-4 years, 
however quite a lot has been said about kdrive recently. I have had 
the kdrive server installed n my Ubuntu 22.04 machine since before it 
was moved to "stable", however I have yet to succeed in using it. Most 
of the computers on my home network are Windows machines. The Windows 
x2go clients have a kdrive check box, however when you check that box 
(on Windows or Ubuntu clients) and try to connect to the x2go server, 
nothing happens. Without the box checked all the x2go clients will 
connect to the server, allbeit with the graphics limitations and lag 
intrinsic to the original x2go when connecting to "modern" desktops. I 
use KDE Plasma. (Note that the "default" settings in the x2go clients 
for connecting to KDE Plasma desktops have not worked since I started 
using a Ubuntu server with x2go in 2020, you have to choose a "custom" 
connection and use the command "startplasma-x11")



Do I need to make some manual modifications on the x2go server to get 
kdrive running? If I do so, do I risk the Windows machines loosing the 
ability to connect? Again, apologies if all this information is 
already available and I have just not seen/found it. As I said I have 
been using x2go since 2020 and it was very useful when I was trapped 
in my bedroom for a week with COVID in 2022. I am just hoping that 
kdrive will improve its performance and am too stupid/ignorant to get 
it working without some help.



Regards

Stuart MacGregor


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[X2Go-User] X2go K Drive Server

[Stuart MacGregor]

Good Morning,

Excuse me for my ignorance/, /but how accurate/up to date is the kdrive 
section of the x2go wiki? It hasn't changed in 3-4 years, however quite 
a lot has been said about kdrive recently. I have had the kdrive server 
installed n my Ubuntu 22.04 machine since before it was moved to 
"stable", however I have yet to succeed in using it. Most of the 
computers on my home network are Windows machines. The Windows x2go 
clients have a kdrive check box, however when you check that box (on 
Windows or Ubuntu clients) and try to connect to the x2go server, 
nothing happens. Without the box checked all the x2go clients will 
connect to the server, allbeit with the graphics limitations and lag 
intrinsic to the original x2go when connecting to "modern" desktops. I 
use KDE Plasma. (Note that the "default" settings in the x2go clients 
for connecting to KDE Plasma desktops have not worked since I started 
using a Ubuntu server with x2go in 2020, you have to choose a "custom" 
connection and use the command "startplasma-x11")



Do I need to make some manual modifications on the x2go server to get 
kdrive running? If I do so, do I risk the Windows machines loosing the 
ability to connect? Again, apologies if all this information is already 
available and I have just not seen/found it. As I said I have been using 
x2go since 2020 and it was very useful when I was trapped in my bedroom 
for a week with COVID in 2022. I am just hoping that kdrive will improve 
its performance and am too stupid/ignorant to get it working without 
some help.



Regards

Stuart MacGregor
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[X2Go-User] New Donation Options for X2Go/Upcoming Sponsorship Drive on NYE

[Stefan Baur]

Hi $ALL,

One result of X2Go: The Spread 2023 was that we decided to re-organize 
our donation options.


As before, you can make donations to orca e.V. (our registered 
nonprofit) and X2Go in general.


However, now you can also make a dedicated donation towards X2Go's 
infrastructure or events.


You can find the links to both the old and new donation options right on 
X2Go's Wiki frontpage: 


We are also investigating if we can use the platform to fund further 
development on X2Go, e.g. by putting up funding goals for certain 
features, but this will take some more time - first we'll need some 
legal counseling so as not to endanger orca e.V.'s non-profit status. 
And this legal counseling will have to be donation-funded as well ...


Important:
On New Year's Eve, 2023-12-31, all non-recurring donations up to 100 EUR 
will receive 15% on top from betterplace.org (donations above 100 EUR 
will receive 15 EUR on top, regardless of the amount), until the top-up 
budget of 8 000 EUR across all projects registered with betterplace is 
reached. This starts midnight 2023-12-31 CET, so the earlier you donate 
on that particular day, the higher the chances that your donation 
towards orca/X2Go will receive the additional 15%.


Kind Regards,
Stefan Baur

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[X2Go-User] X2Go: The Spread 2023 - Recordings/How-To-Videos Now Online

[Stefan Baur]

Hi $ALL,

Our annual X2Go event took place from December 11 to December 15.

All presentations/discussions were streamed live via YouTube, and are 
also available as recordings via the following playlist:



If you missed the live event, I strongly recommend watching the 
recordings - some of these presentations are "How To"-videos, think 
"Everything You Always Wanted to Know About X2Go* (*But Were Afraid to 
Ask)". So if you've never used anything but a complete remote Linux 
desktop via X2Go, or if you've never bothered to look at what other 
options than pxelinux exist for netbooting a ThinClient, you'll learn 
something new here.


Kind Regards,
Stefan Baur

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Re: [X2Go-User] X2go and Synopsys Custom Compiler

[Ulrich Sibiller]

Hi,

Telekinesis still works? My last information is that it has been
abandoned for years...

Does it also crash on a Linux client? If not, it  is probably related
to the Xserver on Windows crashing in certain situations. In that case
it might help to exchange vcxsrv by something else, e.g. X410 or
xming.

You can also try with x2gokdrive, which is a using a newer Xserver
than NX. Your application might rely on some features that are
currently not available in NX based sessions.

Uli

On Fri, Oct 20, 2023 at 6:33 PM Mike MacNeil  wrote:
>
> Hello,
>
> Having issues with X2GO and Synopsys Custom Compiler.  When a designer brings 
> up a layout design in custom compiler X2GO crashes on the client end and 
> crashes custom compiler.  The X2GO session is still running and the user can 
> reconnect – but the custom compiler is closed and needs to be restarted.  Any 
> thoughts?
>
>
>
> I turned on ‘debug’ for logging but it does not show much – if anything.
>
>
>
> Updated x2go server and surrounding packages to 4.1.0.6-0
>
>
>
> Turned on telekinesis
>
>
>
> Really not sure what is happening – VNC works without issue.
>
>
>
> Thank you
>
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Re: [X2Go-User] TR: x2go <-> linux mint 21

[Loïc Roemelin]

Hi,
Thanks very much for XFCE The procedure is as follows (hoping the translation 
is accurate; I have a Linux installed in French...)
Gestionnaire de paramètres : "Settings Manager"
Peaufinage des fenêtres : "Window Manager Tweaks"
Onglet Compositeur : "Compositor" Tab
Décocher "Activer le compositeur d'affichage" : Uncheck "Enable Display 
Compositor"
And it works perfectly

More than one issue to resolve... which is not resolved yet. I don't have a 
firewall installed... it happens to me on several installations, while PuTTY 
works correctly. However, I noticed that every time the first connection 
attempt fails, the server is no longer accessible via x2go on the line that 
experienced the failure...

A big thank you for your invaluable help.
Best regards.

Loic


-Message d'origine-
De : Ulrich Sibiller [mailto:ul...@gmx.de] 
Envoyé : mardi 28 novembre 2023 15:28
À : Loïc Roemelin
Cc : x2go-user@lists.x2go.org
Objet : Re: [X2Go-User] TR: x2go <-> linux mint 21

Hi,

x2go will use ssh to connect back from the server to the client for
stuff like sound, printer and filesharing. That's why a was askign you
to disable all that. Your server must be able to establish the ssh
connection.. Maybe there's some problem from the server to the client
in your LAN case which does not exist in the internet case. No idea
how exactly your setup looks like. You can try to disable the firewall
on both machines and see if that changes anything. If so we need to
track your settings down.

Regarding the XFCE: _maybe_ your XFCE is using OpenGL and you can find
a way to disable it. According to this (German) page
(https://wiki.ubuntuusers.de/Xfce_Composite-Effekte/) you can check
with xfconf-query --channel=xfwm4 --property=/general/use_compositing
--type=bool and toggle the setting with xfconf-query --channel=xfwm4
--property=/general/use_compositing --type=bool --toggle

Uli

On Tue, Nov 28, 2023 at 2:34 PM Loïc Roemelin  wrote:
>
>
>
> -Message d'origine-
> De : Loïc Roemelin [mailto:lroeme...@free.fr]
> Envoyé : mardi 28 novembre 2023 11:27
> À : 'ul...@gmx.de'
> Objet : TR: [X2Go-User] x2go <-> linux mint 21
>
> Hello,
>
> PPA loaded:
> sudo apt-add-repository ppa:x2go/stable
> x2goversion answers now
>
> x2godesktopsharing: 3.2.0.0
> x2goserver: 4.1.0.6
> x2goserver-common: 4.1.0.6
> x2goserver-desktopsharing: 4.1.0.3
> x2goserver-extensions: 4.1.0.6
> x2goserver-fmbindings: 4.1.0.6
> x2goserver-printing: 4.1.0.6
> x2goserver-x2goagent: 3.5.99.26
> x2goserver-x2gokdrive: 4.1.0.6
> x2goserver-xsession: 4.1.0.6
>
> LXDE is now working well without prompting for the password.
> Thank you again for your response; however, issues 1 and 2 remain unresolved.
> Kind regards
>
> Loïc
>
>
>
> -Message d'origine-
> De : Loïc Roemelin [mailto:lroeme...@free.fr]
> Envoyé : lundi 27 novembre 2023 18:39
> À : 'Ulrich Sibiller'
> Objet : RE: [X2Go-User] x2go <-> linux mint 21
>
>
> Hello,
>
> Thank you very much for taking the time to respond to me.
> 1 - Putty works perfectly; disabling the sound doesn't change anything. When 
> connecting via the internet and port forwarding through the router, it works. 
> Is there an issue with SSH?
>
>
> 2 - no, it's not enabled
>
> 3 - ulps x2goversion returns
> x2godesktopsharing: 3.2.0.0
> x2goserver: 4.1.0.3
> x2goserver-common: 4.1.0.3
> x2goserver-desktopsharing: 4.1.0.3
> x2goserver-extensions: 4.1.0.3
> x2goserver-fmbindings: 4.1.0.3
> x2goserver-printing: 4.1.0.3
> x2goserver-x2goagent: 3.5.99.26
> x2goserver-xsession: 4.1.0.3
> I will uninstall and reinstall the correct version. I took the link from the 
> internet, thinking it was the latest version. I didn't have the curiosity to 
> check. Thanks a thousand times for your help
>
> Loic
>
> -Message d'origine-
> De : Ulrich Sibiller [mailto:ul...@gmx.de]
> Envoyé : lundi 27 novembre 2023 16:33
> À : Loïc Roemelin
> Cc : x2go-user@lists.x2go.org
> Objet : Re: [X2Go-User] x2go <-> linux mint 21
>
> Hi,
>
> Issue 1: does plain ssh access work between these machines and the
> server? Does it work better when you disable sound, printer and file
> sharing in the session?
>
> Issue 2: Have you enabled x2gokdrive in the session?
>
> Issue 3: ould be fixed since 2022:
> https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1457
>
> Do you have X2goserver 4.1.2.2?
>
> Uli
>
> On Mon, Nov 27, 2023 at 2:47 PM Loïc Roemelin  wrote:
> >
> > Hi,
> >
> > I'm new to x2go. I'm using Linux Mint 21, and I've installed the x2go 
> > server on several machines for testing. I'm mainly facing three issues:
> >
> > 1 On two machines, I failed to establish the initial connection. Upon the 
> > first connection to this access (on the local network), the connection is 
> > cut almost instantly.The message indicates "terminating session" and 
> > "session terminated." Note that on the same device, I can connect without 
> > any problems when using the internet
> >
> > 2 I'm initially on Linux Mint XFCE, and the connection 

Re: [X2Go-User] TR: x2go <-> linux mint 21

[Ulrich Sibiller]

Hi,

x2go will use ssh to connect back from the server to the client for
stuff like sound, printer and filesharing. That's why a was askign you
to disable all that. Your server must be able to establish the ssh
connection.. Maybe there's some problem from the server to the client
in your LAN case which does not exist in the internet case. No idea
how exactly your setup looks like. You can try to disable the firewall
on both machines and see if that changes anything. If so we need to
track your settings down.

Regarding the XFCE: _maybe_ your XFCE is using OpenGL and you can find
a way to disable it. According to this (German) page
(https://wiki.ubuntuusers.de/Xfce_Composite-Effekte/) you can check
with xfconf-query --channel=xfwm4 --property=/general/use_compositing
--type=bool and toggle the setting with xfconf-query --channel=xfwm4
--property=/general/use_compositing --type=bool --toggle

Uli

On Tue, Nov 28, 2023 at 2:34 PM Loïc Roemelin  wrote:
>
>
>
> -Message d'origine-
> De : Loïc Roemelin [mailto:lroeme...@free.fr]
> Envoyé : mardi 28 novembre 2023 11:27
> À : 'ul...@gmx.de'
> Objet : TR: [X2Go-User] x2go <-> linux mint 21
>
> Hello,
>
> PPA loaded:
> sudo apt-add-repository ppa:x2go/stable
> x2goversion answers now
>
> x2godesktopsharing: 3.2.0.0
> x2goserver: 4.1.0.6
> x2goserver-common: 4.1.0.6
> x2goserver-desktopsharing: 4.1.0.3
> x2goserver-extensions: 4.1.0.6
> x2goserver-fmbindings: 4.1.0.6
> x2goserver-printing: 4.1.0.6
> x2goserver-x2goagent: 3.5.99.26
> x2goserver-x2gokdrive: 4.1.0.6
> x2goserver-xsession: 4.1.0.6
>
> LXDE is now working well without prompting for the password.
> Thank you again for your response; however, issues 1 and 2 remain unresolved.
> Kind regards
>
> Loïc
>
>
>
> -Message d'origine-
> De : Loïc Roemelin [mailto:lroeme...@free.fr]
> Envoyé : lundi 27 novembre 2023 18:39
> À : 'Ulrich Sibiller'
> Objet : RE: [X2Go-User] x2go <-> linux mint 21
>
>
> Hello,
>
> Thank you very much for taking the time to respond to me.
> 1 - Putty works perfectly; disabling the sound doesn't change anything. When 
> connecting via the internet and port forwarding through the router, it works. 
> Is there an issue with SSH?
>
>
> 2 - no, it's not enabled
>
> 3 - ulps x2goversion returns
> x2godesktopsharing: 3.2.0.0
> x2goserver: 4.1.0.3
> x2goserver-common: 4.1.0.3
> x2goserver-desktopsharing: 4.1.0.3
> x2goserver-extensions: 4.1.0.3
> x2goserver-fmbindings: 4.1.0.3
> x2goserver-printing: 4.1.0.3
> x2goserver-x2goagent: 3.5.99.26
> x2goserver-xsession: 4.1.0.3
> I will uninstall and reinstall the correct version. I took the link from the 
> internet, thinking it was the latest version. I didn't have the curiosity to 
> check. Thanks a thousand times for your help
>
> Loic
>
> -Message d'origine-
> De : Ulrich Sibiller [mailto:ul...@gmx.de]
> Envoyé : lundi 27 novembre 2023 16:33
> À : Loïc Roemelin
> Cc : x2go-user@lists.x2go.org
> Objet : Re: [X2Go-User] x2go <-> linux mint 21
>
> Hi,
>
> Issue 1: does plain ssh access work between these machines and the
> server? Does it work better when you disable sound, printer and file
> sharing in the session?
>
> Issue 2: Have you enabled x2gokdrive in the session?
>
> Issue 3: ould be fixed since 2022:
> https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1457
>
> Do you have X2goserver 4.1.2.2?
>
> Uli
>
> On Mon, Nov 27, 2023 at 2:47 PM Loïc Roemelin  wrote:
> >
> > Hi,
> >
> > I'm new to x2go. I'm using Linux Mint 21, and I've installed the x2go 
> > server on several machines for testing. I'm mainly facing three issues:
> >
> > 1 On two machines, I failed to establish the initial connection. Upon the 
> > first connection to this access (on the local network), the connection is 
> > cut almost instantly.The message indicates "terminating session" and 
> > "session terminated." Note that on the same device, I can connect without 
> > any problems when using the internet
> >
> > 2 I'm initially on Linux Mint XFCE, and the connection works, but it's 
> > nearly impossible to work due to window movements leaving all windows 
> > displayed, etc.
> >
> > 3 On LXDE, which I've loaded and works quite well, it asks me for the 
> > administrator password when opening the session, even if I've entered with 
> > another access, which seems abnormal to me. The message indicates, 
> > "Authentication is necessary to create a color management device."
> >
> > Thank you in advance for your help, and I apologize for my lack of knowledge
> >
> > Loïc
> >
> > ___
> > x2go-user mailing list
> > x2go-user@lists.x2go.org
> > https://lists.x2go.org/listinfo/x2go-user
>
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[X2Go-User] TR: x2go <-> linux mint 21

[Loïc Roemelin]

-Message d'origine-
De : Loïc Roemelin [mailto:lroeme...@free.fr] 
Envoyé : mardi 28 novembre 2023 11:27
À : 'ul...@gmx.de'
Objet : TR: [X2Go-User] x2go <-> linux mint 21

Hello,

PPA loaded:
sudo apt-add-repository ppa:x2go/stable
x2goversion answers now

x2godesktopsharing: 3.2.0.0
x2goserver: 4.1.0.6
x2goserver-common: 4.1.0.6
x2goserver-desktopsharing: 4.1.0.3
x2goserver-extensions: 4.1.0.6
x2goserver-fmbindings: 4.1.0.6
x2goserver-printing: 4.1.0.6
x2goserver-x2goagent: 3.5.99.26
x2goserver-x2gokdrive: 4.1.0.6
x2goserver-xsession: 4.1.0.6

LXDE is now working well without prompting for the password.
Thank you again for your response; however, issues 1 and 2 remain unresolved.
Kind regards

Loïc



-Message d'origine-
De : Loïc Roemelin [mailto:lroeme...@free.fr] 
Envoyé : lundi 27 novembre 2023 18:39
À : 'Ulrich Sibiller'
Objet : RE: [X2Go-User] x2go <-> linux mint 21


Hello,

Thank you very much for taking the time to respond to me.
1 - Putty works perfectly; disabling the sound doesn't change anything. When 
connecting via the internet and port forwarding through the router, it works. 
Is there an issue with SSH?


2 - no, it's not enabled

3 - ulps x2goversion returns 
x2godesktopsharing: 3.2.0.0
x2goserver: 4.1.0.3
x2goserver-common: 4.1.0.3
x2goserver-desktopsharing: 4.1.0.3
x2goserver-extensions: 4.1.0.3
x2goserver-fmbindings: 4.1.0.3
x2goserver-printing: 4.1.0.3
x2goserver-x2goagent: 3.5.99.26
x2goserver-xsession: 4.1.0.3
I will uninstall and reinstall the correct version. I took the link from the 
internet, thinking it was the latest version. I didn't have the curiosity to 
check. Thanks a thousand times for your help

Loic

-Message d'origine-
De : Ulrich Sibiller [mailto:ul...@gmx.de] 
Envoyé : lundi 27 novembre 2023 16:33
À : Loïc Roemelin
Cc : x2go-user@lists.x2go.org
Objet : Re: [X2Go-User] x2go <-> linux mint 21

Hi,

Issue 1: does plain ssh access work between these machines and the
server? Does it work better when you disable sound, printer and file
sharing in the session?

Issue 2: Have you enabled x2gokdrive in the session?

Issue 3: ould be fixed since 2022:
https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1457

Do you have X2goserver 4.1.2.2?

Uli

On Mon, Nov 27, 2023 at 2:47 PM Loïc Roemelin  wrote:
>
> Hi,
>
> I'm new to x2go. I'm using Linux Mint 21, and I've installed the x2go server 
> on several machines for testing. I'm mainly facing three issues:
>
> 1 On two machines, I failed to establish the initial connection. Upon the 
> first connection to this access (on the local network), the connection is cut 
> almost instantly.The message indicates "terminating session" and "session 
> terminated." Note that on the same device, I can connect without any problems 
> when using the internet
>
> 2 I'm initially on Linux Mint XFCE, and the connection works, but it's nearly 
> impossible to work due to window movements leaving all windows displayed, etc.
>
> 3 On LXDE, which I've loaded and works quite well, it asks me for the 
> administrator password when opening the session, even if I've entered with 
> another access, which seems abnormal to me. The message indicates, 
> "Authentication is necessary to create a color management device."
>
> Thank you in advance for your help, and I apologize for my lack of knowledge
>
> Loïc
>
> ___
> x2go-user mailing list
> x2go-user@lists.x2go.org
> https://lists.x2go.org/listinfo/x2go-user

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Re: [X2Go-User] x2go <-> linux mint 21

[Ulrich Sibiller]

Hi,

Issue 1: does plain ssh access work between these machines and the
server? Does it work better when you disable sound, printer and file
sharing in the session?

Issue 2: Have you enabled x2gokdrive in the session?

Issue 3: ould be fixed since 2022:
https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1457

Do you have X2goserver 4.1.2.2?

Uli

On Mon, Nov 27, 2023 at 2:47 PM Loïc Roemelin  wrote:
>
> Hi,
>
> I'm new to x2go. I'm using Linux Mint 21, and I've installed the x2go server 
> on several machines for testing. I'm mainly facing three issues:
>
> 1 On two machines, I failed to establish the initial connection. Upon the 
> first connection to this access (on the local network), the connection is cut 
> almost instantly.The message indicates "terminating session" and "session 
> terminated." Note that on the same device, I can connect without any problems 
> when using the internet
>
> 2 I'm initially on Linux Mint XFCE, and the connection works, but it's nearly 
> impossible to work due to window movements leaving all windows displayed, etc.
>
> 3 On LXDE, which I've loaded and works quite well, it asks me for the 
> administrator password when opening the session, even if I've entered with 
> another access, which seems abnormal to me. The message indicates, 
> "Authentication is necessary to create a color management device."
>
> Thank you in advance for your help, and I apologize for my lack of knowledge
>
> Loïc
>
> ___
> x2go-user mailing list
> x2go-user@lists.x2go.org
> https://lists.x2go.org/listinfo/x2go-user
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[X2Go-User] x2go <-> linux mint 21

[Loïc Roemelin]

Hi,

I'm new to x2go. I'm using Linux Mint 21, and I've installed the x2go server on 
several machines for testing. I'm mainly facing three issues:

1 On two machines, I failed to establish the initial connection. Upon the first 
connection to this access (on the local network), the connection is cut almost 
instantly.The message indicates "terminating session" and "session terminated." 
Note that on the same device, I can connect without any problems when using the 
internet

2 I'm initially on Linux Mint XFCE, and the connection works, but it's nearly 
impossible to work due to window movements leaving all windows displayed, etc.

3 On LXDE, which I've loaded and works quite well, it asks me for the 
administrator password when opening the session, even if I've entered with 
another access, which seems abnormal to me. The message indicates, 
"Authentication is necessary to create a color management device."

Thank you in advance for your help, and I apologize for my lack of knowledge

Loïc

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Re: [X2Go-User] html client

[Stefan Baur]

Hi Alastair,

Am 17.11.23 um 16:00 schrieb Alastair Basden:

Hi,

Is there anywhere to download the components required for the html 
client interface described here:

https://wiki.x2go.org/doku.php/wiki:advanced:x2gohtmlclient

And are there any rpms available?


The HTML5 client is currently more of a Proof of Concept and not 
production-ready. That's why you can only find it in our nightly 
repository (heuler).
We are currently looking for sponsors that are willing to fund further 
development on this. If you have a budget for this, please let me know.


As for RPMs, that depends on the Linux distribution and version ...

See e.g. here:


Kind Regards,
Stefan Baur

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[X2Go-User] html client

[Alastair Basden]

Hi,

Is there anywhere to download the components required for the html client 
interface described here:

https://wiki.x2go.org/doku.php/wiki:advanced:x2gohtmlclient

And are there any rpms available?

Thanks.
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[X2Go-User] X2Go: The Spread 2023 - You (K)Drive Me Krazy! 2023-12-11 to 2023-12-10

[Stefan Baur]

Dear $ALL,

In exactly one month, from December 11th to December 15th, we'll have 
our annual X2Go meeting for users, admins and code contributors to X2Go 
- once again, 100% virtual/online, so it's a "The Spread" and not a "The 
Gathering" once more. We're hoping to see you there.


We'll post a link to a virtual meeting room in due time, and expect to 
be streaming/recording the event to YouTube or a similar platform as well.


Starting time will likely be 20:00 CET, as last year, unless a 
significant number of participants requests an earlier start time (say, 
18:00 CET or 19:00 CET) - please let me know (off-list, see below for 
contact details) if you'd like to request an earlier start time.


Sadly, in summer, where Covid numbers and weather conditions would have 
allowed for a real-life meeting, we had a scheduling conflict. And as 
the numbers are rising again, we cannot in good conscience host a 
real-life international conference - especially as some of our members 
have vulnerable household members or are vulnerable persons themselves.


The event page (still work in progress) can be found here:


Each evening has one, max. two time slots for a talk/presentation.
At the moment, three topics are confirmed:
- The usual "X2Go: State of the Union" opening speech
- A report looking back at our latest stable X2Go release, which brought
   KDrive into the stable repository, and showing what still needs to be
   done Re: KDrive.
- A report on how we used betterplace.org for collecting X2Go-related
   donations in the last 18 months, and an open discussion on how we
   could improve our usage of this platform.

I am also hoping for a certain volunteer to commit to a fourth 
presentation regarding the latest changes and improvements in NX-Libs - 
since Arctica/NX-Libs pushed out a new release as well (on which our 
X2Go release is also based, obviously).


This means we will have at least one more open talk slot - possibly 
more, if the two release reports for NX-Libs and X2Go only take 10-15 
minutes each.


If nobody volunteers, I might fill that remaining slot with a quick demo 
of how to netboot X2Go-TCE-Live via iPXE in EFI and legacy mode.


But I'm really hoping for more volunteers for talks/demos/presentations 
- so if you would like to present something 
X2Go/NX-Libs/Arctica-related, please let me know (again, off-list, see 
below for contact details).


We also have the option to prerecord your talk, in case your schedule 
doesn't allow for a live presentation and/or your internet connection is 
too flaky. It would be nice if you're available for a live Q round 
after your talk, though (via text-only chat or audio-only stream is fine).


Please note that this time, the orca e.V. annual meeting will take place 
on the Sunday morning *before* the start of X2Go: The Spread 2023. All 
orca e.V. members have already received their invitation.


To contact me, please do not hit "reply"/"reply to all"/"reply to list", 
but rather, send a *new* E-Mail to .


Kind Regards,
Stefan Baur

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Re: [X2Go-User] x2gokdriveclient on wondows

[Stefan Baur]

Am 04.11.23 um 14:36 schrieb Andreas Weise:


I'm using x2go for many years and it works rock solid. Thank you very much for 
that software.

I have rcently set up a new server with debian 12 and x2go-kdrive server and 
cinnamon desktop.

Together with the x2gokdriveclient it works very well on local computers on 
linux.

I could not find a windows version of kdriveclient. As I'm not too familar with 
windows and absoluty not familar with qt, I wasn't able to create the windows 
executable myself.

Is there any way to get a windows executable?

Yes, a prerelease binary can be found here:


If you/your company would like to support X2Go development by sponsoring 
the official release, let me know.


Kind Regards,
Stefan Baur

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[X2Go-User] x2gokdriveclient on wondows

[Andreas Weise]

Hello x2go team,



I'm using x2go for many years and it works rock solid. Thank you very much for 
that software.

I have rcently set up a new server with debian 12 and x2go-kdrive server and 
cinnamon desktop.

Together with the x2gokdriveclient it works very well on local computers on 
linux.

I could not find a windows version of kdriveclient. As I'm not too familar with 
windows and absoluty not familar with qt, I wasn't able to create the windows 
executable myself.

Is there any way to get a windows executable?



With best regards

Andreas
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Re: [X2Go-User] How can I connect and view the Display Manager

[Stefan Baur]

Am 26.10.23 um 15:18 schrieb Esben Stien:
If I first log in, then I can connect using "Connection to local 
desktop" , but I want to view the login screen. Should this be possible 
with X2Go.


No. While X2Go has limited remote support capabilities (the "Connection 
to local desktop" setting), it is a terminal server, meant to serve 
hardware-independent desktops and applications, not a cheap clone of 
TeamViewer or AnyDesk. In a way, X2GoClient takes the role of the Login 
Manager.


What exactly is the underlying problem you are trying to solve?

Kind Regards,
Stefan Baur

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[X2Go-User] How can I connect and view the Display Manager

[Esben Stien]

I'm trying to log in and view the Display Manager login screen. I'm
using SDDM as Display Manager, but I can use any kind of Display
Manager, like gdm, to get this working.

If I first log in, then I can connect using "Connection to local
desktop"

, but I want to view the login screen.

Should this be possible with X2Go. I can't really find any documentation
on this. It sort of bypasses the Display Manager. 

I'm on Xorg-1.20.14 on NixOS 22.11
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Re: [X2Go-User] Trying x2gokdrive again

[Neal Becker]

Neal Becker wrote:

> I'm trying out Orion's packages of kdrive on F38
> 
> client:
> x2goclient-4.1.2.3-1.fc38.x86_64
> x2gokdriveclient-0.0.0.1-2.fc38.x86_64
> 
> server:
> x2goserver-common-4.1.0.4-1.fc38.noarch
> x2goagent-4.1.0.4-1.fc38.x86_64
> x2goserver-xsession-4.1.0.4-1.fc38.noarch
> x2goserver-4.1.0.4-1.fc38.x86_64
> x2goserver-x2gokdrive-4.1.0.4-1.fc38.x86_64
> 
> Running kde on both client and server, so far working well.
> One bug:
> The command to start kde is no longer startkde, it's startplasma-x11.
> 

So far good results!  The previous tests failed because when the network 
connection was lost the session was lost, which made it unusable for my use 
case.  Now this problem seems fixed.  When network connection is lost, the 
client crashes, which is annoying, but not does not make it unusable.  The 
session is preserved and restarting the client reconnects fine.

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[X2Go-User] Trying x2gokdrive again

[Neal Becker]

I'm trying out Orion's packages of kdrive on F38

client:
x2goclient-4.1.2.3-1.fc38.x86_64
x2gokdriveclient-0.0.0.1-2.fc38.x86_64

server:
x2goserver-common-4.1.0.4-1.fc38.noarch
x2goagent-4.1.0.4-1.fc38.x86_64
x2goserver-xsession-4.1.0.4-1.fc38.noarch
x2goserver-4.1.0.4-1.fc38.x86_64
x2goserver-x2gokdrive-4.1.0.4-1.fc38.x86_64

Running kde on both client and server, so far working well.
One bug:
The command to start kde is no longer startkde, it's startplasma-x11.

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[X2Go-User] AdminByRequest on X2go

[Jeff Thomas]

Hello,I have installed AdminByRequest on Ubuntu 22.04. It works on the local 
machine. If a user attempts to do something that requires Admin privileges they 
will receive a popup that requires them to request admin privileges.  Once they 
request it the popup disappears and rights are granted for the remainder of 
their session. (ABR logs the activity)
For the few remote X2go users if they try to do something that requires Admin 
privileges they will see a message that ABR blocked it, but they do not get the 
popup to request it. 
ABR is looking at the issue, but I suspect they will say it is not intended to 
use on remote session, where multiple people may be signed in at a time... 
Though we only have a few remote users.
Im hoping there may be a way to get the xcfe gui on x2go to display the ABR 
popup. 
Any advice would be greatly appreciated!
ThanksJT 

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[X2Go-User] X2go and Synopsys Custom Compiler

[Mike MacNeil]

Hello,
Having issues with X2GO and Synopsys Custom Compiler.  When a designer brings 
up a layout design in custom compiler X2GO crashes on the client end and 
crashes custom compiler.  The X2GO session is still running and the user can 
reconnect - but the custom compiler is closed and needs to be restarted.  Any 
thoughts?

I turned on 'debug' for logging but it does not show much - if anything.

Updated x2go server and surrounding packages to 4.1.0.6-0

Turned on telekinesis

Really not sure what is happening - VNC works without issue.

Thank you
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[X2Go-User] Fwd: x2go and ssh-agent forwarding

[graeme . x2go]

 Forwarded Message 
Subject:x2go and ssh-agent forwarding
Date:   Thu, 19 Oct 2023 21:21:48 +0100
From:   graeme vetterlein 
To: x2go-user@lists.x2go.org



Anybody know if this is still current?


https://wiki.x2go.org/doku.php/doc:howto:ssh-agent-workaround



It suggests a patch was available in 2017


I can see a fresh ssh-agent(1) is getting started (so blocking access to 
the original client one)


also I note the use of /-oClearAllForwardings on the ssh call x2go makes 
. neither look like good news :-(

/



I did try  (XFCE) :


xfconf-query -c xfce4-session -p /startup/ssh-agent/enabled -n -t bool 
-s false


xfconf-query -c xfce4-session -p /startup/ssh-agent/type -n -t string -s 
ssh-agent


And indeed the ssh-agnet was not started, but SSH_AUTH_SOCK (to 
tmp/ssh-xx/agent.PID   [ literally PID not a number ]



FYI I need to use the keys to access github and I don't want to put them 
on the machine I'm x2going into.



BTW. I also ran a test using a "custom desktop" of /usr/bin/lxterminal 
...and in that terminal SSH_AUTH_SOCK was set


to a non-existant filename(socket) in ~/.x2go



--


Graeme
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[X2Go-User] system upgrade

[o1bigtenor]

Greetings

Just did a system upgrade (debian bookworm) and I have an updated
system except for x2go.

The following is what I am getting.
(Have tried changing bullseye to bookworm and the result is the same.)

>http://packages.x2go.org/debian/dists/bullseye/InRelease: Key is stored in 
>legacy trusted.gpg   >keyring (/etc/apt/trusted.gpg), see the DEPRECATION 
>section in apt-key(8) for details.

Have looked for a specific technique to update the key storage.
Can't find such.
Checked with the x2go website to see if there is any somewhat current
information  - - - except the website is current for - - well, some
time ago.

Please - - - any suggestions for how to remove this 'issue'?

TIA
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[X2Go-User] Debian resume does not work anymore after update to 4.1.0.6

[richard lucassen]

Client and server "Debian Testing"

This morning I got server version 4.1.0.6 using apt. When connecting
using client 4.1.2.3-1 it works, but after a resume the client says
that the session is still running so the only way to get back to the
server is to terminate the session and to create a new one. I
downgraded the server to 4.1.0.3-7+deb12u1 and resuming works again. I
run a command x environment:

/usr/bin/ssh-agent /usr/bin/wmaker

I'm at 1000km away from the server and as I use x2go all the time, so I
won't be able for the moment to run some tests. Just FYI for the
moment. I put these packages on hold:

# apt-mark hold libx2go-config-perl libx2go-log-perl
libx2go-server-db-perl libx2go-server-perl libx2go-utils-perl
x2goserver x2goserver-common x2goserver-extensions x2goserver-x2goagent
x2goserver-xsession

in order to stay with version 4.1.0.3-7+deb12u1.

Richard.

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Re: [X2Go-User] Complaints about windows resizing/moved on session resume

[Orion Poplawski]

On 10/9/23 11:36, Orion Poplawski wrote:
> Many of our users are complaining about:
> 
> something in the EL8/X2Go/KDE? interface now just runs roughshod over
> the windows you have open, between suspending and resuming sessions.
> Windows are re-sided, moved, opened, closed...at random.  I often
> have multiple windows open and, for example, running IDL or editing
> or something, and I have them placed where I want as I am testing
> and debugging or writing code, I suspend / restore the session and
> come back to just randomly placed, sized, opened or closed desktop.
> **i don't like people mucking with my desktop** whether real
> or virtual!!!  The three of us mentioned to each other that we
> feel like we are continually re-sizing, finding, and just spending
> time counteracting what has been done to our setups.
> 
> 
> So, what's going on what what can be done to stop it?  Clients and server are
> EL8.  Desktop environment is KDE.  We have a mix of x2goagent and x2gokdrive
> sessions.
> 
> We've removed kscreen.
> 
> Any help would be greatly appreciated.  Thanks.

So, it appears that on initial connection, even on resume, the display is set
to 800x600 and then resized to what is in the session preferences.  With the
change to 800x600, KDE tries to re-arrange the windows to fit better it seems.

Why is this done instead of either setting the size to the session preferences
or preferably the size of the existing session?

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[X2Go-User] Complaints about windows resizing/moved on session resume

[Orion Poplawski]

Many of our users are complaining about:

something in the EL8/X2Go/KDE? interface now just runs roughshod over
the windows you have open, between suspending and resuming sessions.
Windows are re-sided, moved, opened, closed...at random.  I often
have multiple windows open and, for example, running IDL or editing
or something, and I have them placed where I want as I am testing
and debugging or writing code, I suspend / restore the session and
come back to just randomly placed, sized, opened or closed desktop.
**i don't like people mucking with my desktop** whether real
or virtual!!!  The three of us mentioned to each other that we
feel like we are continually re-sizing, finding, and just spending
time counteracting what has been done to our setups.


So, what's going on what what can be done to stop it?  Clients and server are
EL8.  Desktop environment is KDE.  We have a mix of x2goagent and x2gokdrive
sessions.

We've removed kscreen.

Any help would be greatly appreciated.  Thanks.


-- 
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IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/


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Re: [X2Go-User] X2Go resizing uncontrollably with KDrive

[Rui Ferreira]

Às 18:42 de 02/10/23, Orion Poplawski escreveu:


Even after removing kscreen, one user is still having issues:

The effect seems to be a bit cumulative.
First time or two after restarting x2go, no resizing.
Then like a 1- or 2-'round' of resizing and it'll stop.
Then after another few times it's up to 5 or 6...
Then at some point you get to where it just won't stop.
But restarting x2go (loosing your session) does get
it to stop.  Or, start the cycle I describe above over again.


Is there some extra logging that might be useful to log screen resize requests?



Hi Orion.

I don't know. I'm just a user.
I'm not even using kdrive.
I'm using regular old x2goagent (nxagent) and it works well with 
KDE/Plasma 5. No issues with kscreen whatsoever.


I just tested it again.
Going from fullscreen to windowed mode, tilling around, etc...
It always resizes nicely.

Sorry. Can't reproduce, can't help.

Regards,
Rui Ferreira
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Re: [X2Go-User] X2Go resizing uncontrollably with KDrive

[Orion Poplawski]

On 10/2/23 12:57, Ulrich Sibiller wrote:
> If the client side is Windows: Might have to do with the way Windows
> adds window decorations. We had an issue like that some years ago
> where vcxsrv did it wrong. Since kdrive does not use an intermediate X
> server it needs to handle these problems itself. Maybe try to run the
> client in Windows 7 compatibility mode. Or change display zoom.
> 
> Uli

Ah, sorry did not specify the client.  The client is also AlmaLinux 8.


> On Mon, Oct 2, 2023 at 7:43 PM Orion Poplawski  wrote:
>>
>> On 9/27/23 05:24, Rui Ferreira wrote:
>>> Hello Orion
>>>
>>> There's an entry in the FAQ about kscreen issues.
>>>
>>> Regards,
>>> Rui Ferreira [user]
>>>
>>> Às 18:42 de 25/09/23, Orion Poplawski escreveu:
 On 9/25/23 09:17, Orion Poplawski wrote:
> I'm seeing a lot of these messages with a kdrive user:
>
> Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a 
> matching
> mode - this means that our config is corruptedor a different device with 
> the
> same serial number has been connected (very unlikely).Falling back to
> preferred modes.
> Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output 
> "X2GoKDriv
> e-0"
> Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device 
> id 'x
> randr-X2GoKDrive-0' already exists"
> Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on 
> cmsCreat
> eRGBProfile
>
>
> Repeats every few seconds it seems.
>
> Should kdrive be simulating EDID or some other output/information to help
> kscreen and colord?

 We're seeing this lead to a segfault in kscreen and possibly behavior where
 the x2go window resizes uncontrollably.
>>
>> Even after removing kscreen, one user is still having issues:
>>
>> The effect seems to be a bit cumulative.
>> First time or two after restarting x2go, no resizing.
>> Then like a 1- or 2-'round' of resizing and it'll stop.
>> Then after another few times it's up to 5 or 6...
>> Then at some point you get to where it just won't stop.
>> But restarting x2go (loosing your session) does get
>> it to stop.  Or, start the cycle I describe above over again.
>>
>>
>> Is there some extra logging that might be useful to log screen resize 
>> requests?
>>
>> --
>> Orion Poplawski
>> IT Systems Manager 720-772-5637
>> NWRA, Boulder/CoRA Office FAX: 303-415-9702
>> 3380 Mitchell Lane   or...@nwra.com
>> Boulder, CO 80301 https://www.nwra.com/
>>
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Re: [X2Go-User] X2Go resizing uncontrollably with KDrive

[Ulrich Sibiller]

If the client side is Windows: Might have to do with the way Windows
adds window decorations. We had an issue like that some years ago
where vcxsrv did it wrong. Since kdrive does not use an intermediate X
server it needs to handle these problems itself. Maybe try to run the
client in Windows 7 compatibility mode. Or change display zoom.

Uli


On Mon, Oct 2, 2023 at 7:43 PM Orion Poplawski  wrote:
>
> On 9/27/23 05:24, Rui Ferreira wrote:
> > Hello Orion
> >
> > There's an entry in the FAQ about kscreen issues.
> >
> > Regards,
> > Rui Ferreira [user]
> >
> > Às 18:42 de 25/09/23, Orion Poplawski escreveu:
> >> On 9/25/23 09:17, Orion Poplawski wrote:
> >>> I'm seeing a lot of these messages with a kdrive user:
> >>>
> >>> Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a 
> >>> matching
> >>> mode - this means that our config is corruptedor a different device with 
> >>> the
> >>> same serial number has been connected (very unlikely).Falling back to
> >>> preferred modes.
> >>> Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output 
> >>> "X2GoKDriv
> >>> e-0"
> >>> Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device 
> >>> id 'x
> >>> randr-X2GoKDrive-0' already exists"
> >>> Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on 
> >>> cmsCreat
> >>> eRGBProfile
> >>>
> >>>
> >>> Repeats every few seconds it seems.
> >>>
> >>> Should kdrive be simulating EDID or some other output/information to help
> >>> kscreen and colord?
> >>
> >> We're seeing this lead to a segfault in kscreen and possibly behavior where
> >> the x2go window resizes uncontrollably.
>
> Even after removing kscreen, one user is still having issues:
>
> The effect seems to be a bit cumulative.
> First time or two after restarting x2go, no resizing.
> Then like a 1- or 2-'round' of resizing and it'll stop.
> Then after another few times it's up to 5 or 6...
> Then at some point you get to where it just won't stop.
> But restarting x2go (loosing your session) does get
> it to stop.  Or, start the cycle I describe above over again.
>
>
> Is there some extra logging that might be useful to log screen resize 
> requests?
>
> --
> Orion Poplawski
> IT Systems Manager 720-772-5637
> NWRA, Boulder/CoRA Office FAX: 303-415-9702
> 3380 Mitchell Lane   or...@nwra.com
> Boulder, CO 80301 https://www.nwra.com/
>
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Re: [X2Go-User] X2Go resizing uncontrollably with KDrive

[Orion Poplawski]

On 9/27/23 05:24, Rui Ferreira wrote:
> Hello Orion
> 
> There's an entry in the FAQ about kscreen issues.
> 
> Regards,
> Rui Ferreira [user]
> 
> Às 18:42 de 25/09/23, Orion Poplawski escreveu:
>> On 9/25/23 09:17, Orion Poplawski wrote:
>>> I'm seeing a lot of these messages with a kdrive user:
>>>
>>> Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a 
>>> matching
>>> mode - this means that our config is corruptedor a different device with the
>>> same serial number has been connected (very unlikely).Falling back to
>>> preferred modes.
>>> Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output 
>>> "X2GoKDriv
>>> e-0"
>>> Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device id 
>>> 'x
>>> randr-X2GoKDrive-0' already exists"
>>> Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on 
>>> cmsCreat
>>> eRGBProfile
>>>
>>>
>>> Repeats every few seconds it seems.
>>>
>>> Should kdrive be simulating EDID or some other output/information to help
>>> kscreen and colord?
>>
>> We're seeing this lead to a segfault in kscreen and possibly behavior where
>> the x2go window resizes uncontrollably.

Even after removing kscreen, one user is still having issues:

The effect seems to be a bit cumulative.
First time or two after restarting x2go, no resizing.
Then like a 1- or 2-'round' of resizing and it'll stop.
Then after another few times it's up to 5 or 6...
Then at some point you get to where it just won't stop.
But restarting x2go (loosing your session) does get
it to stop.  Or, start the cycle I describe above over again.


Is there some extra logging that might be useful to log screen resize requests?

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IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/



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Re: [X2Go-User] MFA support in X2go?

[Ulrich Sibiller]

There are so many prompts outside that we cannot include them all.
AFAIK there's generic support for unknown prompts that pops up a
window showing you the prompt (or generally spoken: the output as
received from the remote side) and letting you enter the matching
response. I am not sure when this comes up and how to trigger it. I
have seen it a few times when testing with a custom MFA at a customer
but I never managed to successfully use it. I don't know why. Maybe
some research is required here.

I would suggest to test this mechanism and make it somehow
configurable. We could e.g. add a configuration item where you can
specify the expected prompt and how to respond to it. Maybe also offer
a global configuration where you can hold the expected prompts for
multiple MFAs so you do not have to configure that on a per-connection
basis.

Uli

On Sat, Aug 26, 2023 at 1:59 AM Orion Poplawski  wrote:
>
> On 8/23/23 12:22, Grigory Shamov wrote:
> > Hi Stefan,
> >
> > Thank you very much for your response! Yes, it looks like our SSH server 
> > "interactive" response for Yubikey/Duo is not being recognized by the 
> > current X2Go clients.
> > The kind of response that looks like this:
> >
> > 
> > (user@host) Duo two-factor login for user:
> >
> > Enter a passcode or select one of the following options:
> >
> > Passcode:
> > 
> >
> > We are running an HPC machine here, with user authentication coming from a 
> > National-wide HPC organization, that chose Duo for MFA. We cannot easily 
> > just pick a random 2nd factor vendor.
> >
> > The related common SSH/SFTP/SCP GUI clients like PuTTY and and MobaXterm 
> > and FileZilla do not seem to have this issue, at least in recent versions. 
> > (I just had a user that out of exasperation tried to run X2go over an SSH 
> > client created by Putty which is of course impossible) .
> >
>
> I think the main difference between x2goclient and at least putty is
> that x2goclient is managing the ssh interaction and feeding the prompts
> as needed.  putty is simply presenting the prompts to the user and
> allowing them to interact with them.  I'm not sure x2goclient has any
> other way to know that the connection is waiting for more authentication
> input.
>
> x2go client has the following known prompts:
>
> const QString SshMasterConnection::challenge_auth_code_prompts_[] = {
>"Verification code:",// GA
> (http://github.com/google/google-authenticator)
>"One-time password (OATH) for",  // OATH
> (http://www.nongnu.org/oath-toolkit/pam_oath.html)
>"passcode:", // MOTP(http://motp.sourceforge.net)
>"Enter PASSCODE:",   // SecurID
>"YubiKey for"// YubiKey
> (https://en.wikipedia.org/wiki/YubiKey)
> };
>
> which is close.  We could either add "Passcode:" for Duo, or make the
> comparison case insensitive.
>
> --
> Orion Poplawski
> he/him/his  - surely the least important thing about me
> IT Systems Manager 720-772-5637
> NWRA, Boulder/CoRA Office FAX: 303-415-9702
> 3380 Mitchell Lane   or...@nwra.com
> Boulder, CO 80301 https://www.nwra.com/
>
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Re: [X2Go-User] colord messages with KDrive

[Orion Poplawski]

On 9/27/23 05:24, Rui Ferreira wrote:

Hello Orion

There's an entry in the FAQ about kscreen issues.

Regards,
Rui Ferreira [user]


Thanks for the note about kscreen, I had forgotten about that.  I've 
removed kscreen from the servers so hopefully that will help.


I'm still getting the colord messages around session resume it seems:

Sep 27 15:31:49 /usr/bin/x2goserver-run-extensions[1213572]: 
x2goserver-run-extensions called with options: 
USER-52-1695382629_stKKDE_dp24 post-resume
Sep 27 15:31:53 kded5[1084517]: colord: Unable to get EDID for output 
"X2GoKDrive-0"
Sep 27 15:31:53 kded5[1084517]: colord: Failed to register device: 
"device id 'xrandr-X2GoKDrive-0' already exists"
Sep 27 15:31:53 kded5[1084517]: colord: Failed to create ICC profile on 
cmsCreateRGBProfile
Sep 27 15:31:54 kwin_x11[1084520]: qt.qpa.xcb: QXcbConnection: XCB 
error: 3 (BadWindow), sequence: 65191, resource id: 20477363, major 
code: 3 (GetWindowAttributes), minor code: 0
Sep 27 15:31:54 kwin_x11[1084520]: qt.qpa.xcb: QXcbConnection: XCB 
error: 9 (BadDrawable), sequence: 65192, resource id: 20477363, major 
code: 14 (GetGeometry), minor code: 0
Sep 27 15:31:54 kwin_x11[1084520]: qt.qpa.xcb: QXcbConnection: XCB 
error: 3 (BadWindow), sequence: 65195, resource id: 20477364, major 
code: 3 (GetWindowAttributes), minor code: 0
Sep 27 15:31:54 kwin_x11[1084520]: qt.qpa.xcb: QXcbConnection: XCB 
error: 9 (BadDrawable), sequence: 65196, resource id: 20477364, major 
code: 14 (GetGeometry), minor code: 0
Sep 27 15:31:54 kded5[1084517]: colord: Unable to get EDID for output 
"X2GoKDrive-0"
Sep 27 15:31:54 kded5[1084517]: colord: Failed to register device: 
"device id 'xrandr-X2GoKDrive-0' already exists"
Sep 27 15:31:54 kded5[1084517]: colord: Failed to create ICC profile on 
cmsCreateRGBProfile
Sep 27 15:31:54 kded5[1084517]: colord: Unable to get EDID for output 
"X2GoKDrive-0"
Sep 27 15:31:54 kded5[1084517]: colord: Failed to register device: 
"device id 'xrandr-X2GoKDrive-0' already exists"
Sep 27 15:31:54 kded5[1084517]: colord: Failed to create ICC profile on 
cmsCreateRGBProfile




Às 18:42 de 25/09/23, Orion Poplawski escreveu:

On 9/25/23 09:17, Orion Poplawski wrote:

I'm seeing a lot of these messages with a kdrive user:

Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a 
matching
mode - this means that our config is corruptedor a different device 
with the

same serial number has been connected (very unlikely).Falling back to
preferred modes.
Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output 
"X2GoKDriv

e-0"
Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: 
"device id 'x

randr-X2GoKDrive-0' already exists"
Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on 
cmsCreat

eRGBProfile


Repeats every few seconds it seems.

Should kdrive be simulating EDID or some other output/information to 
help

kscreen and colord?


We're seeing this lead to a segfault in kscreen and possibly behavior 
where

the x2go window resizes uncontrollably.



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he/him/his  - surely the least important thing about me
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
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[X2Go-User] X2Go on macOS Sonoma

[Orion Poplawski]

Are other people seeing x2goclient crash when connecting on macOS Sonoma (14.0)?

Process:   x2goclient [6166]
Path:  /Applications/x2goclient.app/Contents/MacOS/x2goclient
Identifier:x2goclient
Version:   4.1 (4.1.2.3 git-1ca43813937d 20230117)
Code Type: X86-64 (Native)
Parent Process:launchd [1]
User ID:   69968482

Date/Time: 2023-09-27 11:52:11.9738 -0600
OS Version:macOS 14.0 (23A344)
Report Version:12
Bridge OS Version: 8.0 (21P365)
Anonymous UUID:93030DA8-BFCD-E6A4-541A-B0A1D4E6D59B


Time Awake Since Boot: 3900 seconds

System Integrity Protection: enabled

Crashed Thread:7  SshMasterConnection

Exception Type:EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:   UNKNOWN_0xD at 0x
Exception Codes:   0x000d, 0x

Termination Reason:Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [6166]

VM Region Info: 0 is not in any region.  Bytes before following region: 
4520353792
  REGION TYPESTART - END [ VSIZE] PRT/MAX
SHRMOD  REGION DETAIL
  UNUSED SPACE AT START
--->
  __TEXT  10d6f2000-10d97f000[ 2612K] r-x/rwx
SM=COW  ...OS/x2goclient

Thread 0::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib  0x7ff800f2f13a __getdirentries64 + 
10
1   libsystem_c.dylib   0x7ff800e14269
_readdir_unlocked$INODE64 + 197
2   libsystem_c.dylib   0x7ff800e2f65f readdir_r$INODE64 + 
67
3   QtCore 0x10e7380d3 0x10e629000 + 1110227
4   QtCore 0x10e6e082e 0x10e629000 + 751662
5   QtCore 0x10e6e007a 0x10e629000 + 749690
6   QtCore 0x10e6e15d0
QDirIterator::QDirIterator(QString const&, QStringList const&,
QFlags, QFlags) + 112
7   QtCore 0x10e6daf97
QDir::entryList(QStringList const&, QFlags,
QFlags) const + 359
8   QtCore 0x10e6dae1d
QDir::entryList(QFlags, QFlags) const + 45
9   x2goclient 0x10d76a83c
ONMainWindow::cleanPrintSpool() + 76
10  x2goclient 0x10d769c9b
ONMainWindow::slotProxyFinished(int, QProcess::ExitStatus) + 3563
11  QtCore 0x10e777d6c
QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 2012
12  QtCore 0x10e6f11bc 0x10e629000 + 819644
13  QtCore 0x10e6f34b7 0x10e629000 + 828599
14  QtCore 0x10e777d6c
QMetaObject::activate(QObject*, QMetaObject const*, int, void**) + 2012
15  QtCore 0x10e7c550b
QSocketNotifier::activated(int) + 59
16  QtCore 0x10e77c22e
QSocketNotifier::event(QEvent*) + 430
17  QtGui  0x10ee1c8c1
QApplicationPrivate::notify_helper(QObject*, QEvent*) + 545
18  QtGui  0x10ee1df13
QApplication::notify(QObject*, QEvent*) + 403
19  QtCore 0x10e75e391
QCoreApplication::notifyInternal(QObject*, QEvent*) + 113
20  QtGui  0x10edce3ab 0x10ed8e000 + 263083
21  CoreFoundation  0x7ff8010724e7 __CFSocketPerformV0
+ 950
22  CoreFoundation  0x7ff801048337
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
23  CoreFoundation  0x7ff8010482d9
__CFRunLoopDoSource0 + 157
24  CoreFoundation  0x7ff8010480a4
__CFRunLoopDoSources0 + 215
25  CoreFoundation  0x7ff801046d21 __CFRunLoopRun + 919
26  CoreFoundation  0x7ff801046372
CFRunLoopRunSpecific + 557
27  HIToolbox   0x7ff80b8b29d9
RunCurrentEventLoopInMode + 292
28  HIToolbox   0x7ff80b8b27e6
ReceiveNextEventCommon + 665
29  HIToolbox   0x7ff80b8b2531
_BlockUntilNextEventMatchingListInModeWithFilter + 66
30  AppKit  0x7ff80464e0c5 _DPSNextEvent + 880
31  AppKit  0x7ff804f3f150
-[NSApplication(NSEventRouting)
_nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1304
32  AppKit  0x7ff80463f63a -[NSApplication
run] + 603
33  QtGui  0x10edcf3da 0x10ed8e000 + 267226
34  QtCore 0x10e75b332
QEventLoop::exec(QFlags) + 514
35  QtCore 0x10e75e9cc
QCoreApplication::exec() + 188
36  x2goclient 0x10d7e 

[X2Go-User] build X2GoServer as a user (without sudo) ?

[Elmar Melcher]

Hi,

the instructions in
https://wiki.x2go.org/doku.php/wiki:development:build-howto-linux:x2goserver
require sudo.

Is it possible to build and install x2goserver without sudo rights?

It would be ok and expected that such a x2goserver would be usable
only by the user who installed it into his /home directory, for
example under ~/.local/

Regards,
Elmar
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Re: [X2Go-User] Messages with KDrive

[Rui Ferreira]

Hello Orion

There's an entry in the FAQ about kscreen issues.

Regards,
Rui Ferreira [user]

Às 18:42 de 25/09/23, Orion Poplawski escreveu:

On 9/25/23 09:17, Orion Poplawski wrote:

I'm seeing a lot of these messages with a kdrive user:

Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a matching
mode - this means that our config is corruptedor a different device with the
same serial number has been connected (very unlikely).Falling back to
preferred modes.
Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output "X2GoKDriv
e-0"
Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device id 'x
randr-X2GoKDrive-0' already exists"
Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on cmsCreat
eRGBProfile


Repeats every few seconds it seems.

Should kdrive be simulating EDID or some other output/information to help
kscreen and colord?


We're seeing this lead to a segfault in kscreen and possibly behavior where
the x2go window resizes uncontrollably.



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[X2Go-User] Removing the new control panel from kdrive

[Orion Poplawski]

With kdrive we see a new control panel at the top of the window.  Is it
possible to remove that?  Thanks.

Orion

-- 
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IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/


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Re: [X2Go-User] Messages with KDrive

[Orion Poplawski]

On 9/25/23 09:17, Orion Poplawski wrote:
> I'm seeing a lot of these messages with a kdrive user:
> 
> Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a matching
> mode - this means that our config is corruptedor a different device with the
> same serial number has been connected (very unlikely).Falling back to
> preferred modes.
> Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output "X2GoKDriv
> e-0"
> Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device id 'x
> randr-X2GoKDrive-0' already exists"
> Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on cmsCreat
> eRGBProfile
> 
> 
> Repeats every few seconds it seems.
> 
> Should kdrive be simulating EDID or some other output/information to help
> kscreen and colord?

We're seeing this lead to a segfault in kscreen and possibly behavior where
the x2go window resizes uncontrollably.


-- 
Orion Poplawski
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/



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[X2Go-User] Messages with KDrive

[Orion Poplawski]

I'm seeing a lot of these messages with a kdrive user:

Sep 21 05:55:40 kded5[10869]: kscreen.kded: Failed to find a matching
mode - this means that our config is corruptedor a different device with the
same serial number has been connected (very unlikely).Falling back to
preferred modes.
Sep 21 05:55:40 kded5[10869]: colord: Unable to get EDID for output "X2GoKDriv
e-0"
Sep 21 05:55:40 kded5[10869]: colord: Failed to register device: "device id 'x
randr-X2GoKDrive-0' already exists"
Sep 21 05:55:40 kded5[10869]: colord: Failed to create ICC profile on cmsCreat
eRGBProfile


Repeats every few seconds it seems.

Should kdrive be simulating EDID or some other output/information to help
kscreen and colord?


-- 
Orion Poplawski
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/


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Re: [X2Go-User] Remote printing not working

[Rui Ferreira]

Hello again Mike.

Às 20:03 de 23/09/23, Mike Gabriel escreveu:

Hi Rui,


[...]


Thanks for the follow-up. To be 100% sure, your changes land in 
cups-x2go appropriately, please do the following:



git clone https://code.x2go.org/git/cups-x2go.git

Now copy your version of the cups-x2go script into the newly cloned 
cups-x2go/ folder.


Change dir into that folder and check output of "git diff".

Commit that change, e.g. via "git commit --patch -m "cups-x2go: Fix 
." Find a good commit message one-liner.


The run "git format-patch HEAD~..HEAD". This will create a patch file.

Please send this patch file attached to a reply to this mail.



I divided the changes into 2 patches. Hope I did it right.

One concerns the change in Ghostscript.
The other one is the correction to the parsing of the conf file.


Regards,
Rui FerreiraFrom dd01caddfa6843e27d8d26907efab2e3b01d94e0 Mon Sep 17 00:00:00 2001
From: Rui Ferreira 
Date: Sun, 24 Sep 2023 15:07:48 +0100
Subject: [PATCH] cups-x2go: Fix parsing of ps2pdf command from cups-x2go.conf
 file

---
 cups-x2go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cups-x2go b/cups-x2go
index 736088c..d78f368 100755
--- a/cups-x2go
+++ b/cups-x2go
@@ -83,6 +83,7 @@ sub readconfig
 if($option eq "ps2pdf")
 {
 	$ps2pdf=$value;
+	$ps2pdf=~s/^\s+//;
 }
 if($option eq "loglevel")
 {
-- 
2.34.1

From e6b5ce26142f43e61d60dbf7916e2639068bc3f0 Mon Sep 17 00:00:00 2001
From: Rui Ferreira 
Date: Sun, 24 Sep 2023 15:04:46 +0100
Subject: [PATCH] cups-x2go: Remove offending argument '-c .setpdfwrite' in
 Ghostscript >= 9.54

---
 cups-x2go  | 3 +--
 cups-x2go.conf | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/cups-x2go b/cups-x2go
index d06599d..736088c 100755
--- a/cups-x2go
+++ b/cups-x2go
@@ -43,8 +43,7 @@ my $x2goserver = "local";
 my $printdsa = "/root/.ssh/id_dsa-x2goprint";
 
 # PS2PDF command
-my $ps2pdf = "/usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -c .setpdfwrite -f \"%s\"";
-#my $ps2pdf = "/usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -c .setpdfwrite -f /usr/bin/margin-offset.ps \"%s\"";
+my $ps2pdf = "/usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -f \"%s\"";
 
 ## loglevel for cups-x2go, possible values: emerg, alert, crit, err, warning, notice, info, debug
 my $strloglevel = "notice";
diff --git a/cups-x2go.conf b/cups-x2go.conf
index 7a06843..7dad572 100644
--- a/cups-x2go.conf
+++ b/cups-x2go.conf
@@ -15,7 +15,7 @@
 
 ## command to generate PDF file
 ## CAUTION: this command MUST output the resulting PDF File to standard output.
-#ps2pdf = /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -c .setpdfwrite -f \"%s\"
+#ps2pdf = /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -f \"%s\"
 
 ## loglevel for cups-x2go, possible values: emerg, alert, crit, err, warning, notice, info, debug
 #loglevel = notice
-- 
2.34.1

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Re: [X2Go-User] Remote printing not working

[Mike Gabriel]

Hi Rui,

On  Sa 23 Sep 2023 02:01:23 CEST, Rui Ferreira wrote:


Às 19:37 de 21/09/23, Mike Gabriel escreveu:

HI Rui,

thanks for reporting the below issue.


[...]>
However, we can tweak cups-x2go [1]. It would be nice if you could  
experiment with that a little and move the "$ENV{TMPDIR}="/tmp";"  
statement that is part of the script to the very top of the script  
(after all the "use ...;" statements.


When done, remove your hack again (which brings back more security  
into your CUPS daemon) and re-test cups-x2go. Let me know if that  
works for you. If so, please send your patch.


Thanks,
Mike


Hello Mike

Thank you for your fast response and sorry for my slow one.

It wasn't that, but your tip showed me the way.
The answer begins here:

https://git.ghostscript.com/?p=ghostpdl.git=search=HEAD=commit=setpdfwrite

Ghostscript deprecated 'setpdfwrite' in 2019 and removed it in 2021,  
or version 9.54.

To solve this, I edited /etc/cups/cups-x2go.conf:

ps2pdf = /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH  
-dSAFER -sDEVICE=pdfwrite -sOutputFile=-  
-dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false  
-dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress  
-dDoNumCopies -f \"%s\"


This alone should've solved my problem... yet it wasn't working :(
After many hours of self commiseration, I found that the culprit to  
be a leading space in the command, in this line


my $gs_pid = open2 ($gs_out, $gs_in, $ps2pdf_cmd, @ps2pdf_args);

where $ps2pdf_cmd would translate to ' /usr/bin/gs'.

So, I had to learn just enough Perl to correct this:

if($option eq "ps2pdf")
{
$ps2pdf=$value;
$ps2pdf=~s/^\s+//; < my solution
}

Now, about sending patches... I've never done it before.

I'm not sure if just changing the default ghostscript command line,  
hardcoded in the Perl script and the .conf file, is the best  
solution for everyone.
And I'm not sure if the way I found to trim that leading whitespace  
is the best solution.


I'm too uncertain.

Regards,
Rui Ferreira



Thanks for the follow-up. To be 100% sure, your changes land in  
cups-x2go appropriately, please do the following:



git clone https://code.x2go.org/git/cups-x2go.git

Now copy your version of the cups-x2go script into the newly cloned  
cups-x2go/ folder.


Change dir into that folder and check output of "git diff".

Commit that change, e.g. via "git commit --patch -m "cups-x2go: Fix  
." Find a good commit message one-liner.


The run "git format-patch HEAD~..HEAD". This will create a patch file.

Please send this patch file attached to a reply to this mail.

Thanks!

Mike


--

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Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde
mobile: +49 (1520) 1976 148
landline: +49 (4351) 850 8940

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Re: [X2Go-User] Remote printing not working

[Rui Ferreira]

Às 19:37 de 21/09/23, Mike Gabriel escreveu:

HI Rui,

thanks for reporting the below issue.


[...]>
However, we can tweak cups-x2go [1]. It would be nice if you could 
experiment with that a little and move the "$ENV{TMPDIR}="/tmp";" 
statement that is part of the script to the very top of the script 
(after all the "use ...;" statements.


When done, remove your hack again (which brings back more security into 
your CUPS daemon) and re-test cups-x2go. Let me know if that works for 
you. If so, please send your patch.


Thanks,
Mike


Hello Mike

Thank you for your fast response and sorry for my slow one.

It wasn't that, but your tip showed me the way.
The answer begins here:

https://git.ghostscript.com/?p=ghostpdl.git=search=HEAD=commit=setpdfwrite

Ghostscript deprecated 'setpdfwrite' in 2019 and removed it in 2021, or 
version 9.54.

To solve this, I edited /etc/cups/cups-x2go.conf:

ps2pdf = /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH 
-dSAFER -sDEVICE=pdfwrite -sOutputFile=- -dAutoRotatePages=/PageByPage 
-dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode 
-dPDFSETTINGS=/prepress -dDoNumCopies -f \"%s\"


This alone should've solved my problem... yet it wasn't working :(
After many hours of self commiseration, I found that the culprit to be a 
leading space in the command, in this line


my $gs_pid = open2 ($gs_out, $gs_in, $ps2pdf_cmd, @ps2pdf_args);

where $ps2pdf_cmd would translate to ' /usr/bin/gs'.

So, I had to learn just enough Perl to correct this:

if($option eq "ps2pdf")
{
$ps2pdf=$value;
$ps2pdf=~s/^\s+//; < my solution
}

Now, about sending patches... I've never done it before.

I'm not sure if just changing the default ghostscript command line, 
hardcoded in the Perl script and the .conf file, is the best solution 
for everyone.
And I'm not sure if the way I found to trim that leading whitespace is 
the best solution.


I'm too uncertain.

Regards,
Rui Ferreira
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Re: [X2Go-User] Remote printing not working

[Mike Gabriel]

HI Rui,

thanks for reporting the below issue.

On  Do 21 Sep 2023 20:28:44 CEST, Rui Ferreira wrote:


Hi all.

Error from journalctl -u cups:

set 21 18:34:55 kubuntu /usr/lib/cups/backend/cups-x2go[412569]:  
Print job received from cups -> 1060 rui Re: [X2Go-User] Client  
Printing not working! 1 Collate media=iso_a4_210x297mm_borderless  
Duplex=None job-uuid=urn:uuid:1bce9974-59ca-3cad-7012-b36b56aaf124  
job-originating-host-name=localhost date-time-at-creation=  
date-time-at-processing= time-at-creation=1695317694  
time-at-processing=1695317694 PageSize=A4


set 21 18:34:56 kubuntu /usr/lib/cups/backend/cups-x2go[412569]:  
ERROR: ps2pdf conversion program failed to convert  
/tmp/1060-rui-cupsjob412569RZtB07cJEZ6R_uD_: failed with exit code 1


set 21 18:34:56 kubuntu /usr/lib/cups/backend/cups-x2go[412569]:  
ERROR: cups-x2go failed to process postscript file  
/tmp/1060-rui-cupsjob412569RZtB07cJEZ6R_uD_



Output from cat /etc/systemd/system/printer.target.wants/cups.service:

[Unit]
Description=CUPS Scheduler
Documentation=man:cupsd(8)
After=network.target nss-user-lookup.target nslcd.service
Requires=cups.socket

[Service]
ExecStart=/usr/sbin/cupsd -l
Type=notify
Restart=on-failure
PrivateTmp=false <

[Install]
Also=cups.socket cups.path
WantedBy=printer.target multi-user.target

(even though this is not the right way to make local changes to systemd)

I've issued the commands
   systemctl daemon-reload
and
   systemctl restart cups.service

OS:
 kubuntu 22.04
 x2goserver 4.1.0.3
 cups 2.4.1


As X2Go developers, we don't have much impact on the CUPS systemd  
service start file. That is owned by the CUPS software package.


However, we can tweak cups-x2go [1]. It would be nice if you could  
experiment with that a little and move the "$ENV{TMPDIR}="/tmp";"  
statement that is part of the script to the very top of the script  
(after all the "use ...;" statements.


When done, remove your hack again (which brings back more security  
into your CUPS daemon) and re-test cups-x2go. Let me know if that  
works for you. If so, please send your patch.


Thanks,
Mike
--

DAS-NETZWERKTEAM
c\o Technik- und Ökologiezentrum Eckernförde
Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde
mobile: +49 (1520) 1976 148
landline: +49 (4351) 850 8940

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de



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[X2Go-User] Remote printing not working

[Rui Ferreira]

Hi all.

Error from journalctl -u cups:

set 21 18:34:55 kubuntu /usr/lib/cups/backend/cups-x2go[412569]: Print 
job received from cups -> 1060 rui Re: [X2Go-User] Client Printing not 
working! 1 Collate media=iso_a4_210x297mm_borderless Duplex=None 
job-uuid=urn:uuid:1bce9974-59ca-3cad-7012-b36b56aaf124 
job-originating-host-name=localhost date-time-at-creation= 
date-time-at-processing= time-at-creation=1695317694 
time-at-processing=1695317694 PageSize=A4


set 21 18:34:56 kubuntu /usr/lib/cups/backend/cups-x2go[412569]: ERROR: 
ps2pdf conversion program failed to convert 
/tmp/1060-rui-cupsjob412569RZtB07cJEZ6R_uD_: failed with exit code 1


set 21 18:34:56 kubuntu /usr/lib/cups/backend/cups-x2go[412569]: ERROR: 
cups-x2go failed to process postscript file 
/tmp/1060-rui-cupsjob412569RZtB07cJEZ6R_uD_



Output from cat /etc/systemd/system/printer.target.wants/cups.service:

[Unit]
Description=CUPS Scheduler
Documentation=man:cupsd(8)
After=network.target nss-user-lookup.target nslcd.service
Requires=cups.socket

[Service]
ExecStart=/usr/sbin/cupsd -l
Type=notify
Restart=on-failure
PrivateTmp=false <

[Install]
Also=cups.socket cups.path
WantedBy=printer.target multi-user.target

(even though this is not the right way to make local changes to systemd)

I've issued the commands
   systemctl daemon-reload
and
   systemctl restart cups.service

OS:
 kubuntu 22.04
 x2goserver 4.1.0.3
 cups 2.4.1


Regards,
Rui Ferreira
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Re: [X2Go-User] X2GO Client On Windows Starts and Terminates In A Few Seconds

[Alexandra Lu (Nokia)]

Found some session.log which might have useful information about the issue:

running as X2Go Agent

NXAGENT - Version 3.5.99.26

Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)
Copyright (c) 2008-2014 Oleksandr Shneyder 
Copyright (c) 2011-2016 Mike Gabriel 
Copyright (c) 2014-2016 Ulrich Sibiller 
Copyright (c) 2014-2016 Mihai Moldovan 
Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)
See https://github.com/ArcticaProject/nx-libs for more information.

Info: Agent running with pid '27050'.
Session: Starting session at 'Thu Sep 14 15:34:15 2023'.
Info: Proxy running in client mode with pid '27050'.
Info: Using errors file 
'/tmp/.x2go-alexanlu/C-alexanlu-50-1694720054_stDMATE_dp32/session.log'.
Info: Using stats file 
'/tmp/.x2go-alexanlu/C-alexanlu-50-1694720054_stDMATE_dp32/C-alexanlu-50-1694720054_stDMATE_dp32/stats'.
Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'. Assuming agent 
session.
Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent session.
Info: Waiting for connection from 'localhost' on socket 'tcp:*:58072'.
Info: Aborting the procedure due to signal '15'.
Error: Aborting session with 'Unable to open display 
'nx/nx,options=/tmp/.x2go-alexanlu/C-alexanlu-50-1694720054_stDMATE_dp32/options:50''.
Session: Aborting session at 'Thu Sep 14 15:35:04 2023'.
Session: Session aborted at 'Thu Sep 14 15:35:04 2023'.

From: Alexandra Lu (Nokia)
Sent: Thursday, September 14, 2023 7:40 PM
To: x2go-user@lists.x2go.org
Subject: X2GO Client On Windows Starts and Terminates In A Few Seconds

Hi,

I'm running X2GO client V4.1.2 on Windows 10, and trying to connect to a Linux 
PC running Ubuntu 22.04. I use MATE for the Session Type, and when trying to 
connect, I could see that the Linux desktop window starts then terminates in a 
few seconds, and the following x2go error log is created on the Linux PC. I'm 
guessing the last assert was the cause of the crash. Does anyone have any 
suggestions on how to fix it?


alexanlu@kanalexanlu:~$ cat 
.xsession-x2go-kanalexanlu.labs.ca.alcatel-lucent.com-errors
XSession-x2go: X session started for alexanlu at Thu Sep 14 07:15:17 PM EDT 2023
dbus-update-activation-environment: setting 
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-mk5nk6mkbA,guid=09468172243b55dae833668765039405
dbus-update-activation-environment: setting DISPLAY=:50
dbus-update-activation-environment: setting 
XAUTHORITY=/home/alexanlu/.Xauthority
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
/etc/x2go/Xsession.d/30x11-common_xresources: line 16: has_option: command not 
found
xhost:  must be on local machine to add or remove hosts.
localuser:alexanlu being added to access control list
/etc/x2go/Xsession.d/75dbus_dbus-launch: line 9: has_option: command not found
dbus-update-activation-environment: setting 
GTK_MODULES=appmenu-gtk-module:appmenu-gtk-module:gail:atk-bridge
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
/etc/x2go/Xsession.d/90x11-common_ssh-agent: line 9: has_option: command not 
found
dbus-update-activation-environment: setting SHELL=/bin/bash
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
dbus-update-activation-environment: setting 
no_proxy=localhost,127.0.0.1,135.227.67.200,alcatel-lucent.com,mv.usa.alcatel.com,ih.lucent.com,sh.bel.alcatel.be,ion.nokia.net,lab.sk.alcatel-lucent.com
dbus-update-activation-environment: setting GTK_IM_MODULE=ibus
dbus-update-activation-environment: setting 
LOG_HOST=kanlog01.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting LANGUAGE=en_CA:en
dbus-update-activation-environment: setting 
APT_HTTP_PROXY=http://usfraaa-proxy.americas.nsn-net.net:8080
dbus-update-activation-environment: setting 
FOLLOWME=lpd://usdaprn006.nsn-intra.net/follow_me_printing
dbus-update-activation-environment: setting 
GASH_MIRROR=pantaloon.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting 
SSH_AUTH_SOCK=/home/alexanlu/.x2go/C-alexanlu-50-1694733302_stDMATE_dp32/ssh-agent.PID
dbus-update-activation-environment: setting 
NTP_SERVERS=ca0071udhc02.ca.alcatel-lucent.com 
ca0071udhc03.ca.alcatel-lucent.com ntp.app.alcatel-lucent.com 
ntp.app.alcatel-lucent.com
dbus-update-activation-environment: setting 
GIT_MIRROR=kangitpanos.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting XMODIFIERS=@im=ibus
dbus-update-activation-environment: setting KEYBOARD=us
dbus-update-activation-environment: setting 
LAB_NTP_SERVERS=ca0071udhc02.ca.alcatel-lucent.com 

[X2Go-User] X2GO Client On Windows Starts and Terminates In A Few Seconds

[Alexandra Lu (Nokia)]

Hi,

I'm running X2GO client V4.1.2 on Windows 10, and trying to connect to a Linux 
PC running Ubuntu 22.04. I use MATE for the Session Type, and when trying to 
connect, I could see that the Linux desktop window starts then terminates in a 
few seconds, and the following x2go error log is created on the Linux PC. I'm 
guessing the last assert was the cause of the crash. Does anyone have any 
suggestions on how to fix it?


alexanlu@kanalexanlu:~$ cat 
.xsession-x2go-kanalexanlu.labs.ca.alcatel-lucent.com-errors
XSession-x2go: X session started for alexanlu at Thu Sep 14 07:15:17 PM EDT 2023
dbus-update-activation-environment: setting 
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-mk5nk6mkbA,guid=09468172243b55dae833668765039405
dbus-update-activation-environment: setting DISPLAY=:50
dbus-update-activation-environment: setting 
XAUTHORITY=/home/alexanlu/.Xauthority
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
/etc/x2go/Xsession.d/30x11-common_xresources: line 16: has_option: command not 
found
xhost:  must be on local machine to add or remove hosts.
localuser:alexanlu being added to access control list
/etc/x2go/Xsession.d/75dbus_dbus-launch: line 9: has_option: command not found
dbus-update-activation-environment: setting 
GTK_MODULES=appmenu-gtk-module:appmenu-gtk-module:gail:atk-bridge
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
dbus-update-activation-environment: warning: error sending to systemd: 
org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 
exited with status 1
/etc/x2go/Xsession.d/90x11-common_ssh-agent: line 9: has_option: command not 
found
dbus-update-activation-environment: setting SHELL=/bin/bash
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
dbus-update-activation-environment: setting 
no_proxy=localhost,127.0.0.1,135.227.67.200,alcatel-lucent.com,mv.usa.alcatel.com,ih.lucent.com,sh.bel.alcatel.be,ion.nokia.net,lab.sk.alcatel-lucent.com
dbus-update-activation-environment: setting GTK_IM_MODULE=ibus
dbus-update-activation-environment: setting 
LOG_HOST=kanlog01.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting LANGUAGE=en_CA:en
dbus-update-activation-environment: setting 
APT_HTTP_PROXY=http://usfraaa-proxy.americas.nsn-net.net:8080
dbus-update-activation-environment: setting 
FOLLOWME=lpd://usdaprn006.nsn-intra.net/follow_me_printing
dbus-update-activation-environment: setting 
GASH_MIRROR=pantaloon.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting 
SSH_AUTH_SOCK=/home/alexanlu/.x2go/C-alexanlu-50-1694733302_stDMATE_dp32/ssh-agent.PID
dbus-update-activation-environment: setting 
NTP_SERVERS=ca0071udhc02.ca.alcatel-lucent.com 
ca0071udhc03.ca.alcatel-lucent.com ntp.app.alcatel-lucent.com 
ntp.app.alcatel-lucent.com
dbus-update-activation-environment: setting 
GIT_MIRROR=kangitpanos.labs.ca.alcatel-lucent.com
dbus-update-activation-environment: setting XMODIFIERS=@im=ibus
dbus-update-activation-environment: setting KEYBOARD=us
dbus-update-activation-environment: setting 
LAB_NTP_SERVERS=ca0071udhc02.ca.alcatel-lucent.com 
ca0071udhc03.ca.alcatel-lucent.com ntp.app.alcatel-lucent.com
dbus-update-activation-environment: setting STARTUP=/usr/bin/im-launch 
/usr/bin/env LD_LIBRARY_PATH= mate-session
dbus-update-activation-environment: setting 
GTK_MODULES=appmenu-gtk-module:appmenu-gtk-module:gail:atk-bridge
dbus-update-activation-environment: setting 
RELAY_HOST=mvrelay.mv.usa.alcatel.com
dbus-update-activation-environment: setting PWD=/home/alexanlu
dbus-update-activation-environment: setting LOGNAME=alexanlu
dbus-update-activation-environment: setting XDG_SESSION_TYPE=tty
dbus-update-activation-environment: setting 
MANPATH=/usr/local/timostools/git.d/man:/usr/local/timostools/git.d/man:
dbus-update-activation-environment: setting 
GPG_AGENT_INFO=/run/user/69030611/gnupg/S.gpg-agent:0:1
dbus-update-activation-environment: setting DOMAIN_SEARCH=mv.usa.alcatel.com 
nuq.ion.nokia.net eng.timetra.com sh.bel.alcatel.be
dbus-update-activation-environment: setting 
XAUTHORITY=/home/alexanlu/.Xauthority
dbus-update-activation-environment: setting 
ftp_proxy=http://usfraaa-proxy.americas.nsn-net.net:8080
dbus-update-activation-environment: setting MOTD_SHOWN=pam
dbus-update-activation-environment: setting LOCAL_ADMINS=
dbus-update-activation-environment: setting 
X2GO_SESSION=alexanlu-50-1694733302_stDMATE_dp32
dbus-update-activation-environment: setting HOME=/home/alexanlu
dbus-update-activation-environment: setting IM_CONFIG_PHASE=1
dbus-update-activation-environment: setting LANG=en_US.UTF-8
dbus-update-activation-environment: setting 

[X2Go-User] Next Events/Upcoming X2Go and orca e.V. Sponsorship Drive - Tomorrow, 2023-09-05

[Stefan Baur]

Dear $ALL,

X2Go will be present at LinuxDay.AT  in 
Dornbirn, Austria on Saturday, September 30th, and also at the 
IT-Kongress  in Neu-Ulm, Germany, on Thursday, 
November 9th, 2023.


At both events, we will have a booth where we will demo X2Go-KDrive, as 
well as the HTML5Client beta and X2Go's integration into the latest 
Remmina client.


At LinuxDay.AT, there will also be a talk with a live demo of how you 
can run a small X2GoServer instance in the Google Cloud, for free, using 
Tor (The Onion Router) to log in.


The talk at IT-Kongress will be a behind-the-scenes look regarding the 
customer-driven development that led to the creation of X2Go-KDrive.


(Note that both talks will be in German, but our booth staff at both 
events is fluent in German as well as in English.)


If you're planning to attend and/or are in the area, feel free to stop 
by and say hi! Both events are free, though IT-Kongress requires 
registration.


We are trying to cover the costs for our two volunteers/orca e.V. 
members (Mihai and me) via orca e.V., the registered association that 
X2Go belongs to, but for that, we will need your help in the form of 
donations*.


You can find our donation pages here:
X2Go (English):

X2Go (German):

orca e.V. (English):

orca e.V. (German):


It would be really cool if you could send some $$$/€€€/£££/¥¥¥ our way, 
so we can keep advocating for X2Go and free remote desktop/remote 
application projects in general.
We can accept donations via PayPal, Credit Card, Direct Debit, 
giropay/paydirect and wire transfer. Best of all, donations towards X2Go 
and orca are usually tax deductible for German tax subjects.


Note that there is a special sponsorship drive sponsored by our funding 
platform, betterplace.org:
Non-recurring donations up to 100 Euro made on Tuesday, 2023-09-05 
(starting 00:00 CEST) will receive 20% on top directly from 
betterplace.org. Larger donations will receive 20 Euro on top instead. 
This offer is only valid until a funding pool of 12.000 Euro is 
depleted. So the earlier you donate on this particular day, the higher 
the chance that your donation will receive the bonus from betterplace.


Kind Regards,
Stefan Baur
(with his X2Go Event Planner hat on)

*If times are rough for you and you can't afford to donate, don't feel 
bad! You can also help us by forwarding this announcement to whomever 
you seem fit - e.g. your local Linux user group, your social media 
followers, etc.

If you're on Twitter, you can retweet and like the following to help:
 (English)
 (German)
Feel free to copy the text and links of these Tweets to any social media 
platform that you are using.


--
BAUR-ITCS UG (haftungsbeschränkt)
Geschäftsführer: Stefan Baur
Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364
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Re: [X2Go-User] MFA support in X2go?

[Orion Poplawski]

On 8/23/23 12:22, Grigory Shamov wrote:

Hi Stefan,

Thank you very much for your response! Yes, it looks like our SSH server 
"interactive" response for Yubikey/Duo is not being recognized by the current 
X2Go clients.
The kind of response that looks like this:


(user@host) Duo two-factor login for user:

Enter a passcode or select one of the following options:

Passcode:


We are running an HPC machine here, with user authentication coming from a 
National-wide HPC organization, that chose Duo for MFA. We cannot easily just 
pick a random 2nd factor vendor.

The related common SSH/SFTP/SCP GUI clients like PuTTY and and MobaXterm and 
FileZilla do not seem to have this issue, at least in recent versions. (I just 
had a user that out of exasperation tried to run X2go over an SSH client 
created by Putty which is of course impossible) .



I think the main difference between x2goclient and at least putty is 
that x2goclient is managing the ssh interaction and feeding the prompts 
as needed.  putty is simply presenting the prompts to the user and 
allowing them to interact with them.  I'm not sure x2goclient has any 
other way to know that the connection is waiting for more authentication 
input.


x2go client has the following known prompts:

const QString SshMasterConnection::challenge_auth_code_prompts_[] = {
  "Verification code:",// GA 
(http://github.com/google/google-authenticator)
  "One-time password (OATH) for",  // OATH 
(http://www.nongnu.org/oath-toolkit/pam_oath.html)

  "passcode:", // MOTP(http://motp.sourceforge.net)
  "Enter PASSCODE:",   // SecurID
  "YubiKey for"// YubiKey 
(https://en.wikipedia.org/wiki/YubiKey)

};

which is close.  We could either add "Passcode:" for Duo, or make the 
comparison case insensitive.


--
Orion Poplawski
he/him/his  - surely the least important thing about me
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/



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Re: [X2Go-User] Wrong Shell When Connecting with X2Go

[Joe W]

I found that somebody reported this problem in bug 1434. See link below. It 
says the bug was fixed in x2goserver  4.1.0.4. I am using Rocky Linux 8.8 and 
the Epel repo for it just has the 4.1.0.3 version of x2goserver.

I tried the suggestion of deleting the .bash_profile and .bashrc files but bash 
still used for me.

Will x2goserver be updated in the Epel repo any time soon? Is there anywhere 
else to get a more recent x2goserver rpm?

https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1434

Thanks,
Joe

From: Joe W 
Sent: Tuesday, August 22, 2023 8:47 PM
To: x2go-user@lists.x2go.org 
Subject: Wrong Shell When Connecting with X2Go

I have another system that I installed Rocky Linux 8.8 onto.

I created some logins and set the shell to be /usr/bin/tcsh.

I installed XFCE.

When I log in at the computer and open a terminal then the tcsh shell is being 
used as expected.

When I connect using X2Go then open a terminal the shell is bash.

Any idea why this is happening?

Thanks,
Joe


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Re: [X2Go-User] MFA support in X2go?

[Grigory Shamov]

I mean, would it not be better, more general for the X2go client to parse ANY 
second factor response, as other SSH clients managed somehow to do, rather than 
assume this or that particular second factor to parse?


-- 
Grigory Shamov 
Site Lead / HPC Specialist 
University of Manitoba and DRI Alliance Canada 





On 2023-08-23, 1:23 PM, "x2go-user on behalf of Grigory Shamov" 
mailto:x2go-user-boun...@lists.x2go.org> on 
behalf of grigory.sha...@umanitoba.ca > 
wrote:



Caution: This message was sent from outside the University of Manitoba.



Hi Stefan,


Thank you very much for your response! Yes, it looks like our SSH server 
"interactive" response for Yubikey/Duo is not being recognized by the current 
X2Go clients.
The kind of response that looks like this:



(user@host) Duo two-factor login for user:


Enter a passcode or select one of the following options:


Passcode:



We are running an HPC machine here, with user authentication coming from a 
National-wide HPC organization, that chose Duo for MFA. We cannot easily just 
pick a random 2nd factor vendor.


The related common SSH/SFTP/SCP GUI clients like PuTTY and and MobaXterm and 
FileZilla do not seem to have this issue, at least in recent versions. (I just 
had a user that out of exasperation tried to run X2go over an SSH client 
created by Putty which is of course impossible) .


-- 
Grigory Shamov 
Site Lead / HPC Specialist 
University of Manitoba and DRI Alliance Canada 














On 2023-06-01, 1:54 AM, "x2go-user on behalf of Stefan Baur" 
mailto:x2go-user-boun...@lists.x2go.org> 
> on behalf of x2go-m...@baur-itcs.de 
 >> wrote:





Caution: This message was sent from outside the University of Manitoba.





Am 25.05.23 um 22:54 schrieb Grigory Shamov:
> HI All,
> 
> Is there any X2go client around that would support connecting to SSH with a 
> multi-factor auth like Duo or Yubikey enabled?




The stock X2GoClient already has built-in support for several MFA tools.




"Verification code:", // GA 
(http://github.com/google/google-authenticator 
 
 
)
"One-time password (OATH) for", // OATH 
(http://www.nongnu.org/oath-toolkit/pam_oath.html 
 
 
)
"passcode:", // MOTP (http://motp.sourceforge.net  
 )
"Enter PASSCODE:", // SecurID
"YubiKey for" // YubiKey 
(https://en.wikipedia.org/wiki/YubiKey  
 
)




I have successfully used the first two myself, and we have customers 
using this as well.
The neat thing about the first two is that they are free and don't 
require a hardware token - an free app on a Smartphone is enough.
Also note that even though the first one is named after Google, it does 
not require a Google account, nor does it, to my knowledge, "phone home" 
to Google. Also, you can use any generic TOTP generator on the 
Smartphone side for both, you do not have to use the Google 
Authenticator app on the smartphone side just because you're using the 
Google Authenticator plugin on the server side.
In fact, due to known security issues with it, I would recommend against 
using the Google Authenticator App on the smartphone side.
However, the server-side plugin is really neat, IMO, and I would prefer 
it over pam_oath. It has some nice features like providing you with a 
bunch of back-up, emergency codes that you can print out and store 
somewhere safe.




The one thing to remember is that you do not configure this in X2Go, but 
in SSH/PAM, as this is what X2Go uses to connect.




If you can log in via SSH using your MFA key/token, you will also be 
able to use it for X2Go. There will be an additional Pop-Up after you've 
entered username and password where you need to enter/paste the one-time 
password.




If X2GoClient doesn't show the popup, it is because the prompt (again, 
you can test/verify this via commandline SSH) doesn't match any of the 
known prompts listed above.




Kind Regards,
Stefan Baur




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Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: 

Re: [X2Go-User] MFA support in X2go?

[Grigory Shamov]

Hi Stefan,

Thank you very much for your response! Yes, it looks like our SSH server 
"interactive" response for Yubikey/Duo is not being recognized by the current 
X2Go clients.
The kind of response that looks like this:


(user@host) Duo two-factor login for user:

Enter a passcode or select one of the following options:

Passcode:


We are running an HPC machine here, with user authentication coming from a 
National-wide HPC organization, that chose Duo for MFA. We cannot easily just 
pick a random 2nd factor vendor.

The related common SSH/SFTP/SCP GUI clients like PuTTY and and MobaXterm and 
FileZilla do not seem to have this issue, at least in recent versions. (I just 
had a user that out of exasperation tried to run X2go over an SSH client 
created by Putty which is of course impossible) .

-- 
Grigory Shamov 
Site Lead / HPC Specialist 
University of Manitoba and DRI Alliance Canada 







On 2023-06-01, 1:54 AM, "x2go-user on behalf of Stefan Baur" 
mailto:x2go-user-boun...@lists.x2go.org> on 
behalf of x2go-m...@baur-itcs.de > wrote:



Caution: This message was sent from outside the University of Manitoba.



Am 25.05.23 um 22:54 schrieb Grigory Shamov:
> HI All,
> 
> Is there any X2go client around that would support connecting to SSH with a 
> multi-factor auth like Duo or Yubikey enabled?


The stock X2GoClient already has built-in support for several MFA tools.


"Verification code:", // GA 
(http://github.com/google/google-authenticator 
)
"One-time password (OATH) for", // OATH 
(http://www.nongnu.org/oath-toolkit/pam_oath.html 
)
"passcode:", // MOTP (http://motp.sourceforge.net )
"Enter PASSCODE:", // SecurID
"YubiKey for" // YubiKey 
(https://en.wikipedia.org/wiki/YubiKey )


I have successfully used the first two myself, and we have customers 
using this as well.
The neat thing about the first two is that they are free and don't 
require a hardware token - an free app on a Smartphone is enough.
Also note that even though the first one is named after Google, it does 
not require a Google account, nor does it, to my knowledge, "phone home" 
to Google. Also, you can use any generic TOTP generator on the 
Smartphone side for both, you do not have to use the Google 
Authenticator app on the smartphone side just because you're using the 
Google Authenticator plugin on the server side.
In fact, due to known security issues with it, I would recommend against 
using the Google Authenticator App on the smartphone side.
However, the server-side plugin is really neat, IMO, and I would prefer 
it over pam_oath. It has some nice features like providing you with a 
bunch of back-up, emergency codes that you can print out and store 
somewhere safe.


The one thing to remember is that you do not configure this in X2Go, but 
in SSH/PAM, as this is what X2Go uses to connect.


If you can log in via SSH using your MFA key/token, you will also be 
able to use it for X2Go. There will be an additional Pop-Up after you've 
entered username and password where you need to enter/paste the one-time 
password.


If X2GoClient doesn't show the popup, it is because the prompt (again, 
you can test/verify this via commandline SSH) doesn't match any of the 
known prompts listed above.


Kind Regards,
Stefan Baur


-- 
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Geschäftsführer: Stefan Baur
Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364
Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243
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[X2Go-User] Wrong Shell When Connecting with X2Go

[Joe W]

I have another system that I installed Rocky Linux 8.8 onto.

I created some logins and set the shell to be /usr/bin/tcsh.

I installed XFCE.

When I log in at the computer and open a terminal then the tcsh shell is being 
used as expected.

When I connect using X2Go then open a terminal the shell is bash.

Any idea why this is happening?

Thanks,
Joe


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[X2Go-User] colord fix needs update for Debian >= 12 / polkit >= 120

[Philipp Huebner]

Hi all,

on Debian 12 I was getting that annoying color-manager polkit 
authentication window again.


Turns out, the file
/etc/polkit-1/localauthority/10-vendor.d/x2goserver-no-colord.pkla
installed by x2goserver no longer has any effect because that backend is 
obsolete in polkit >= 120 or so.


I ported the original rule to /etc/polkit-1/rules.d/color-manager.rules 
with the following content:



polkit.addRule(function(action, subject) {
if (action.id.match("org.freedesktop.color-manager") &&
subject.local == false ) {
polkit.log("action=" + action);
polkit.log("subject=" + subject);
polkit.log("action '" + action.id + "' denied!");
return polkit.Result.NO;
}
});


That solved the issue for me.

Supposedly one can also install the package polkitd-pkla to get back 
support for the old file, but I have not tried that approach.


Best wishes
--
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: :'  :  pgp fp: 6719 25C5 B8CD E74A 5225  3DF9 E5CA 8C49 25E4 205F
`. `'`
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Re: [X2Go-User] x2gokdrive doesn't like connection interruption

[Orion Poplawski]

On 7/22/23 12:34, Neal Becker wrote:
> client and server both fedora f38.
> x2gokdriveclient-0.0.0.1-1.fc38.x86_64
> 
> I find that when connection gets interrupted 3 bad things can happen:
> 
> 1. client uses 100% cpu
> 
> 2. Trying to reconnect, screen starts to open and immediately closes.  Then 
> on next attempt a new session starts, old session is lost.
> 
> 3. With client connected, closing laptop lid should initiate sleep.  Instead 
> client runs 100% cpu and machine doesn't sleep.

We seem to be seeing #2 - not entirely sure if it's connected to a previous
interruption.

How do we debug this so we can fix it?

-- 
Orion Poplawski
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/



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[X2Go-User] Session with a single application

[Olaf]

Hello!

How to configure a session with a single application?

"Session Type":
"Application" -> command "thunar" and/or "/usr/bin/thunar" in the right box

=> Application starts but freezes immediately (or at least doesn't respond to 
input/mouse). No matter whether browser, mail, Libreoffice, pcmanfm,...

Greeting,
Olaf
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[X2Go-User] Can't use ssh-agent / ECDSA key file for passwordless login [MacOS client]

[Aaron]

Hi all,

I'm having trouble getting the x2go client to authenticate with
passwordless login options other than kerberos. Specifically, I've
tried auto login (via SSH agent) and supplying the path to my OpenSSH
private key (which is an ECDSA key).

Kerberos works for me as long (as I have a valid ticket), but I want
to connect using the the ECDSA key, for reasons I'll explain below.

I suspect that the ECDSA format key is not supported by my current
client version, but if someone could confirm (or deny) that, I would
appreciate it; and if it's possible that it might work with a more up
to date client build / build against an updated LibSSH or something,
that would be good to know too. I don't currently have the wherewithal
to build my own copy of the client for MacOS, but that might provide
some incentive for me to try sometime soon.

Some background: I'm using x2go at work to connect from my Macbook Pro
to a Linux server. To connect using Kerberos, I need a valid ticket,
and to get a valid ticket, I need to first connect to the corporate
VPN. However, I don't need to connect to the VPN in order to use SSH
(from a terminal), thanks to a proxy software (a ProxyCommand in my
~/.ssh/config).

If I already have a valid Kerberos ticket, the X2go client will
connect using Kerberos, without VPN (that is, the ProxyCommand seems
to work). However, I don't want to have to connect to the VPN just to
renew my kerberos ticket when ssh itself will work using the ECDSA key
I obtain. (It will also work using my password, but that is a
temporary measure... my employer is phasing out password-based ssh in
favor of requiring U2F).

To be clear, the proxy command doesn't seem to be the issue; I
encounter the same problem when I'm connected to the VPN.

I've attached two files (with usernames and hostnames substituted),
one the output of ssh -vvv (succes) and the other the output from
/Applications/x2goclient.app/Contents/MacOS/x2goclient --debug
(failed). Both were run while connected to the VPN. The x2go session
was set up with "Try auto login" checked, Kerberos 5 unchecked, and
"Use RSA/DSA key" left blank (the log also shows that the contents of
my ssh agent were valid in the terminal). Trying after supplying a
path to my ~/.ssh/id_ecdsa file under "Use RSA/DSA key" has the same
result.
myusername [601] $ ssh -vvv -i ~/.ssh/id_ecdsa remote-host.domain 
OpenSSH_9.0p1, LibreSSL 3.3.6
debug1: Reading configuration data /Users/myusername/.ssh/config
debug2: checking match for 'all' host remote-host.domain originally 
remote-host.domain
debug2: match found
debug1: /Users/myusername/.ssh/config line 42: Applying options for *
debug1: /Users/myusername/.ssh/config line 56: Applying options for 
remote-host.domain
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no 
files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug1: /etc/ssh/ssh_config line 58: Applying options for *
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> 
'/Users/myusername/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> 
'/Users/myusername/.ssh/known_hosts2'
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to remote-host.domain port 22.
debug1: Connection established.
debug1: identity file /Users/myusername/.ssh/id_ecdsa type 2
debug1: identity file /Users/myusername/.ssh/id_ecdsa-cert type 6
debug1: identity file /Users/myusername/.ssh/id_rsa type -1
debug1: identity file /Users/myusername/.ssh/id_rsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.0
debug1: Remote protocol version 2.0, remote software version 
OpenSSH_7.4p1-RHEL7-7.4p1-22 mdy1.0
debug1: compat_banner: match: OpenSSH_7.4p1-RHEL7-7.4p1-22 mdy1.0 pat 
OpenSSH_7.4* compat 0x0406
debug3: fd 5 is O_NONBLOCK
debug1: Authenticating to remote-host.domain:22 as 'myusername'
debug3: record_hostkey: found key type RSA in file 
/Users/myusername/.ssh/known_hosts:150
debug3: load_hostkeys_file: loaded 1 keys from remote-host.domain
debug1: load_hostkeys: fopen /Users/myusername/.ssh/known_hosts2: No such file 
or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or 
directory
debug3: order_hostkeyalgs: prefer hostkeyalgs: 
rsa-sha2-512-cert-...@openssh.com,rsa-sha2-256-cert-...@openssh.com,rsa-sha2-512,rsa-sha2-256
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: 
sntrup761x25519-sha...@openssh.com,curve25519-sha256,curve25519-sha...@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c
debug2: host key algorithms: 

[X2Go-User] x2gokdrive doesn't like connection interruption

[Neal Becker]

client and server both fedora f38.
x2gokdriveclient-0.0.0.1-1.fc38.x86_64

I find that when connection gets interrupted 3 bad things can happen:

1. client uses 100% cpu

2. Trying to reconnect, screen starts to open and immediately closes.  Then 
on next attempt a new session starts, old session is lost.

3. With client connected, closing laptop lid should initiate sleep.  Instead 
client runs 100% cpu and machine doesn't sleep.

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[X2Go-User] x2gokdrive screen goes mostly black

[Orion Poplawski]

One of our users is seeing an issue using x2gokdrive where most of the desktop
goes black.  Can slowly restore by forcing things to repaint by moving windows.

Host is EL8 - x2goserver 4.1.0.4, kdrive 0.0.0.1
Client is Windows x2goclient-4.1.2.3-ba65703-kdrclient-a3134d6

KDE desktop

Any ideas what might be causing this?

-- 
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IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/


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[X2Go-User] FYI - dbus issues with tcsh on EL8

[Orion Poplawski]

The dbus-x11 packages' /etc/profile.d/ssh-x-forwarding.csh file will start a
new dbus-deamon that gets killed when the user disconnects from ssh causing
problems on re-connect.

I've reported the issue with a fix here:
https://bugzilla.redhat.com/show_bug.cgi?id=2223420

Thankfully it seems the the dbus-x11 package dropped these scripts in later
releases.

-- 
Orion Poplawski
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
3380 Mitchell Lane   or...@nwra.com
Boulder, CO 80301 https://www.nwra.com/


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[X2Go-User] X.Org server did not launch correctly

[Yun-Fei Liu]

Hello,

I'm using Windows 11 Home (Version 22H2, OS build 22621.1848) on a Microsoft 
Surface Pro 7+. I have the latest version of X2Go client (v4.1.2.2, Qt-4.8.6)

I was able to connect to our lab server using X2Go on the week of June 19th. 
However, when I tried to log in today (July 2nd), I got an error message "X.Org 
server did not launch correctly after 4 tries".

There is no such problem with my other MSI laptop which is running Windows 10. 
It would be great if anyone knows how to solve this error message. Thank you.

Yun-Fei Liu
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[X2Go-User] GSSApi error with x2go authentication

[Sidy Soumare]

We are running x2goserver-xsession-4.1.0.3-9.el7.noarch on CentOS 7 Server. 
Each time users try to authenticate they got the following error related to 
Kerberos.
" Check your GSSApi configuration or chose another authentication method"
Any guidance will be appreciated.


Sidy SOUMARE
Information Technology and Services Professional
CCNA/VCP (4&5)/ITIL(F)/NCSA
Mobiles: +223 76408835, +223 66729349
NETE Contract Support Team (Research Data and Communication Tech)
www.researchdata.us
===
Available Monday to Friday from 08:00am gmt to 05:00pm gmt

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