Re: [X2Go-User] Black screen with Fedora 34 KDE

2021-09-09 Thread Michael Eager

Hi Ulrich --

Anything I can do to help diagnose this problem?

On 9/5/21 1:22 PM, Michael Eager wrote:

On 9/5/21 12:16 PM, Ulrich Sibiller wrote:

On Sun, Sep 5, 2021 at 6:02 PM Michael Eager  wrote:


On 9/5/21 3:18 AM, Ulrich Sibiller wrote:
Well, that's not the same. Nxagent is derived from xnest and can be 
used

in the same manner. So for testing please try this:

1. Ssh -X fedoraserver in two shell > 2. In the first session  run  
nxagent -ac :5


I get an NX Agent window, completely black.  Session started message in
the shell.


3. In the second run xterm -display :5


I ran "konsole -display :5" and konsole opened in the NS Agent window.


no, please run xterm -display :5 and run konsole from there. This is
to ensure all started program will get the right display.


Xterm was not previously installed.
Installed xterm.  It displays an xterm window on NX Agent window.



In the shell, I get
qt.qpa.xcb: X server does not support XInput 2
qt.qpa.gl: QXcbConnection: Failed to initialize GLX
qt.qpa.xcb: QXcbConnection: XCB error: 1 (BadRequest), sequence: 169,
resource id: 225, major code: 130 (Unknown), minor code: 47

I think that these are all informational, not errors.


Hmm, not sure. At least the xkb thing looks suspicious.


4. In the xterm run startkde (or however kde is started on fedora)


I get a popup (not on the NX Agent window) saying "Plasma seems to
already running on this display".


That's because you skipped the xterm step. The KDE framework is
referring to the local display...


(Actually, I previously replaced the xterm step with running konsole
with the same command line options.  The popup was referring to the
target, not the local display.  Running konsole probably started KDE.
But it did confuse the test.)

Ran 'startkde' in the xterm window, I get message about XInput 2 and two
messages about skipping syncing environment variable BASH_FUNC_which%%.
The NX Agent window is otherwise mostly non-responsive.  Right or left
click does nothing.  The cursor does change from | within the xterm to
arrow outside of the xterm.  There is no window menu or title bar on
the xterm window.  None of the KDE/Plasma widgets are displayed.

If I run 'konsole' in the xterm window, it displays in the NX Agent
window.  There is no window title or decorations.

When I run VNCserver, the KDE/Plasma widgets are displayed.  Running
konsole does show a window title bar with decorations.



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Re: [X2Go-User] x2go error after updating from Ubuntu 16.04 to 20.04

2021-09-09 Thread Dr. Tobias Holzmann

Dear Uli,

thank you for your fast reply. Indeed, by using --mesa it works but 
previously it worked simply without the --mesa attribute.


I will check the graphic-card driver as blender etc. does not work 
either but only using x2go.


If I am using the server locally everything works quite fine.

Tobi

On 09.09.21 12:52, Ulrich Sibiller wrote:

On Thu, Sep 9, 2021 at 11:55 AM Dr. Tobias Holzmann
 wrote:

Dear everybody,

yesterday I updated a server which is used by my team using x2go.

The Linux update (Ubuntu 16.04 to 20.04) went well and everything is up
and running. x2go works fine too but opening e.g., graphic user
interface programs such as blender, paraview, or salome/freecad.

The error for e.g., paraview, is:

qt.qpa.xcb: X server does not support  XInput 2.

Which is true - xagoagent/nxagent still does not support XInput2. It
is on the software you use if it can deal with Xinput1 or not.

But from my experience these messages are informational, not show-stoppers.

IIRC paraview is a 3d application so these issues might be related to
you graphics drivers, too.

In https://discourse.paraview.org/t/running-paraview-in-virtual-machine/2624
and https://wiki.classe.cornell.edu/Computing/ParaView I found
paraview-mesa being mentioned, does it work with this wrapper? Or
maybe with paraview --mesa-llvm?

Uli




And a lot of other error messages. However, locally everything works
quite well and hence, it should be related to x2go.

Probably a lot of info is missing to get into the problem.
In any case, I will provide any information one needs.

Thanks in advance for any support/hint.

--
Glück Auf | Kind Regard
Tobi
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Re: [X2Go-User] x2go error after updating from Ubuntu 16.04 to 20.04

2021-09-09 Thread Ulrich Sibiller
On Thu, Sep 9, 2021 at 11:55 AM Dr. Tobias Holzmann
 wrote:
>
> Dear everybody,
>
> yesterday I updated a server which is used by my team using x2go.
>
> The Linux update (Ubuntu 16.04 to 20.04) went well and everything is up
> and running. x2go works fine too but opening e.g., graphic user
> interface programs such as blender, paraview, or salome/freecad.
>
> The error for e.g., paraview, is:
>
> qt.qpa.xcb: X server does not support  XInput 2.

Which is true - xagoagent/nxagent still does not support XInput2. It
is on the software you use if it can deal with Xinput1 or not.

But from my experience these messages are informational, not show-stoppers.

IIRC paraview is a 3d application so these issues might be related to
you graphics drivers, too.

In https://discourse.paraview.org/t/running-paraview-in-virtual-machine/2624
and https://wiki.classe.cornell.edu/Computing/ParaView I found
paraview-mesa being mentioned, does it work with this wrapper? Or
maybe with paraview --mesa-llvm?

Uli



> And a lot of other error messages. However, locally everything works
> quite well and hence, it should be related to x2go.
>
> Probably a lot of info is missing to get into the problem.
> In any case, I will provide any information one needs.
>
> Thanks in advance for any support/hint.
>
> --
> Glück Auf | Kind Regard
> Tobi
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> x2go-user mailing list
> x2go-user@lists.x2go.org
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[X2Go-User] x2go error after updating from Ubuntu 16.04 to 20.04

2021-09-09 Thread Dr. Tobias Holzmann

Dear everybody,

yesterday I updated a server which is used by my team using x2go.

The Linux update (Ubuntu 16.04 to 20.04) went well and everything is up 
and running. x2go works fine too but opening e.g., graphic user 
interface programs such as blender, paraview, or salome/freecad.


The error for e.g., paraview, is:

qt.qpa.xcb: X server does not support  XInput 2.

And a lot of other error messages. However, locally everything works 
quite well and hence, it should be related to x2go.


Probably a lot of info is missing to get into the problem.
In any case, I will provide any information one needs.

Thanks in advance for any support/hint.

--
Glück Auf | Kind Regard
Tobi
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