Re: Is This Windows?.....

2019-12-29 Thread Marko Vojinovic
On Sun, 29 Dec 2019 13:28:09 -0800
Samuel Sieb  wrote:

> On 12/29/19 12:50 PM, Eddie G. O'Connor Jr. wrote:
[snip]
> > ...there's a funky button up top of the
> > Software Updates (after its found packages to update) that says
> > "Restart & Install"?..is there ANY way possible to TURN THIS
> > CRAP OFF!!??
[snip]
> 
> There are good reasons to do this that have been discussed many
> times. If you don't want the reboot, then just run "dnf upgrade" in a
> terminal.

Ok, I'll bite --- aside from kernel updates and maybe some
ultra-critical security updates, can you specify what are those good
reasons for rebooting the machine after updating?

Or if you don't want to bother with a detailed answer, I'd appreciate a
link where this has been discussed in a serious/informative manner.

Best, :-)
Marko


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Re: SSH after upgrade

2019-10-07 Thread Marko Vojinovic
On Mon, 07 Oct 2019 15:25:28 +0200
Jakub Jelen  wrote:
> On Mon, 2019-10-07 at 14:13 +0200, Marko Vojinovic wrote:
> > On Mon, 07 Oct 2019 10:38:32 +0200
> > Can you please elaborate what were the "many practical reasons" that
> > prevented this from being changed for the last 5 years? And why are
> > they not equally practical now?
> 
> Mostly the unwillingness of people who were used to use root accounts
> in Fedora and not enough alternatives how to override or set up
> alternative during installation.
> 
> The initial change was half-baked proposed 5 years ago:
> 
> https://fedoraproject.org/wiki/Changes/SSHD_PermitRootLogin_no

Yes, that's what I remember being proposed, and eventually rejected.
There were long discussions of this on various mailing lists. I mostly
remember this one:

 https://lists.fedoraproject.org/pipermail/devel/2014-November/204530.html

but there were others as well...
 
> but never accepted by FeSCO (note sure if it was even proposed) and
> started long discussions on mailing lists as linked from there.
> 
> Since then, we did not change the value to "no", but we disabled only
> the password logins, we added a simple way how to override this in
> anaconda installer and there are simple ways how to override it in
> kickstarts or add a public ssh keys to authorized_keys files.

I see, so there indeed were some technical improvements, to anaconda and
kickstart, that circumvented the issues people had back then. That is
what I was looking for --- the technical upgrades that made changing
the default a viable proposal. I'll read up on those in more detail.
 
> I think it was mostly testing and scratch boxes that needed root
> logins (specific use cases), making sure that there is some other
> account that is allowed to login after installation (installation
> problems). But I think I did not manage to read that thread this year
> again.

I just re-read the discussion on the devel list from 2014. And yes, the
main complaint was that some people were deploying headless VM/test
systems where they didn't want to create a non-root user. Changing the
default would break a bunch of their existing kickstart scripts...
Another scenario that was mentioned by someone was that if /home were
network-mounted, and the network would fail, it would leave the system
inaccessible via ssh.

> 5 years ago, there were no simple workarounds for the installation.
> Even this year, the agreement was not really smooth and updating
> installer was one of the requirements for the change to be approved:
> 
> https://pagure.io/fesco/issue/2133

I see, so it was an uphill battle even this time around. But this
time it was finally won! Congratulations! :-)

> This change request is in Fedora actually for more than 15 years:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=89216
> 
> Back in that time, this was not default even in upstream and many
> people were using root accounts.

Oh, wow, unbelievable, reported on 2003-04-21 !!! So this issue is even
older than Fedora itself --- from the days of Red Hat 9 (Shrike) all
the way to Fedora 31... I thought this was first raised in 2015, had no
idea it is as old as 2003...

> I think that over the years, the security practices shifted to better
> solutions, people learned to use normal users, sudo and ssh keys,
> which allowed us to do this finally. Originally the change would be a
> surprise for users, but recently, people were surprised by the root
> login allowed in Fedora, which also started to be dangerous.

So essentially it was a psychological thing --- it took all this time
just to change people's minds about this, re-educate them, and wait
until they change their practices of remotely logging in as root. With a
couple of technical modifications to anaconda and kickstart.

This is the info I was looking for, thanks a lot! :-)

But I'm still amazed... A security bug/rfe from 2003, closed in 2019...
Just wow...

Thanks, :-)
Marko


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Re: SSH after upgrade

2019-10-07 Thread Marko Vojinovic
On Mon, 07 Oct 2019 10:38:32 +0200
Jakub Jelen  wrote:

> On Mon, 2019-10-07 at 02:53 +0200, Marko Vojinovic wrote:
> > On Mon, 7 Oct 2019 10:21:03 +1100
> > Cameron Simpson  wrote:
> > > On 07Oct2019 01:00, Marko Vojinovic  wrote:
> > > > On Sun, 06 Oct 2019 18:05:02 +0200
> > > > alcir...@gmail.com wrote:
> > > > > It could it be related to this change:
> > > > > https://fedoraproject.org/wiki/Releases/31/ChangeSet#Disable_Root_Password_Login_in_SSH
> > > > 
> > > > As a side question --- I remember that this was the default for
> > > > upstream OpenSSH since 2015, but was not adopted in Fedora
> > > > because
> > > > people who install Fedora on headless machines (or remotely)
> > > > would
> > > > have no other way of logging in after initial installation. So
> > > > why
> > > > the change of heart now, what happened to the headless login
> > > > issue?
> > > 
> > > Because one can generally set up a normal user, log in as them,
> > > then
> > > su or sudo.
> > 
> > Was this not possible back in 2015?
> > 
> > I guess I am asking what technically changed between then and now,
> > so that we didn't block root back then and we are doing it now?
> 
> Please, read the whole fedora change page. It answers all your
> questions.

Well, the relevant sentence from the change page says:

"Fedora was for many practical reasons keeping the old configuration
since then, but the difference is no longer bearable"

Can you please elaborate what were the "many practical reasons" that
prevented this from being changed for the last 5 years? And why are
they not equally practical now?

Don't get me wrong, I fully support this change, disabling ssh root
login is the very first thing I do every time I install a new system.
And each time I ask myself why on earth isn't this the default, but I
sort-of remember (from various discussions on this mailing list back in
2015 or so) that people had good reasons to keep it that way. And now
that I see the default is going to be changed, I'm curious what were
those reasons and what happened to them --- how come they were
good enough for the last five years, and are not good enough now? What
changed? Or else, why wasn't this done already back in 2015?

Best, :-)
Marko




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Re: SSH after upgrade

2019-10-06 Thread Marko Vojinovic
On Mon, 7 Oct 2019 10:21:03 +1100
Cameron Simpson  wrote:

> On 07Oct2019 01:00, Marko Vojinovic  wrote:
> >On Sun, 06 Oct 2019 18:05:02 +0200
> >alcir...@gmail.com wrote:
> >> It could it be related to this change:
> >> https://fedoraproject.org/wiki/Releases/31/ChangeSet#Disable_Root_Password_Login_in_SSH
> >
> >As a side question --- I remember that this was the default for
> >upstream OpenSSH since 2015, but was not adopted in Fedora because
> >people who install Fedora on headless machines (or remotely) would
> >have no other way of logging in after initial installation. So why
> >the change of heart now, what happened to the headless login issue?
> 
> Because one can generally set up a normal user, log in as them, then
> su or sudo.

Was this not possible back in 2015?

I guess I am asking what technically changed between then and now, so
that we didn't block root back then and we are doing it now?

Best, :-)
Marko
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Re: SSH after upgrade

2019-10-06 Thread Marko Vojinovic
On Sun, 06 Oct 2019 18:05:02 +0200
alcir...@gmail.com wrote:
> On Sun, 2019-10-06 at 10:46 -0500, Mike Chambers wrote:
> > Upgraded server from Fedora 30 to 31 (updated to present), and ssh
> > into
> > that server works fine as normal user, but no longer lets me login
> > as root.  I can login as root from the server machine itself, and
> > can login via su - but just cant' from ssh.
> > 
> > Any ideas what changed or got replaced so revert it back?
> 
> It could it be related to this change: 
> https://fedoraproject.org/wiki/Releases/31/ChangeSet#Disable_Root_Password_Login_in_SSH

As a side question --- I remember that this was the default for
upstream OpenSSH since 2015, but was not adopted in Fedora because
people who install Fedora on headless machines (or remotely) would have
no other way of logging in after initial installation. So why the change
of heart now, what happened to the headless login issue?

Best, :-)
Marko
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Re: Wifi systens -

2019-10-01 Thread Marko Vojinovic
On Tue, 01 Oct 2019 23:59:54 +0100
Patrick O'Callaghan  wrote:
> On Tue, 2019-10-01 at 17:41 -0400, Bob Goodwin wrote:
> > Ethernet over the ac power line? I've seen those advertised, know 
> > nothing about their suitability for this application however.
> 
> Powerline Ethernet (usually called Homeplug - 
> https://en.wikipedia.org/wiki/HomePlug) is my standard answer for
> people who want to extend their home network. Very easy to install and
> much cheaper than the alternatives (not counting wireless "extenders"
> which are basically a kludge). The downside is that unlike mesh
> systems they don't tend to merge everything into one network, relying
> on your WiFi device to hop from one to another.

Does this work across the polyphase wiring [1] in the house? I'm
guessing not?

Various parts of my house are receiving power from the three different
phases (as provided by the power company), and various power lines in my
household are therefore mutually physically disconnected. Is there a
Homeplug device that would retransmit the ethernet signal from one
phase line to another? Or is the ethernet signal somehow being
transmitted over the single "zero" wire (and how would that even work)?
If neither, that is a serious disadvantage compared to a mesh wifi
network...

Best, :-)
Marko

[1] https://en.wikipedia.org/wiki/Polyphase_system


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Re: comments in pdf

2019-05-26 Thread Marko Vojinovic
On Sun, 26 May 2019 11:29:52 +0200
"Patrick Dupre"  wrote:

> Would you have a suggestion for a software capable of adding comments
> in a pdf file?

okular

HTH, :-)
Marko

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Re: Laptop and only 100% and 200% monitor scaling shown

2019-05-12 Thread Marko Vojinovic
On Mon, 13 May 2019 08:54:36 +1000
Cameron Simpson  wrote:
> On 12May2019 19:00, Gianluca Cecchi  wrote:
> >having a new 13.3" laptop with resolution of 1920x1080 and Fedora
> >30, I see
> >that Gnome only gives me option of 100% scaling (that renders with
> >too small fonts ans duch in my opinion) and 200% (that instead
> >appears as too big).
> [...]
> 
> Doesn't scaling your display inherently involve blurring the stuff 
> rendered on it?

In my case, not visibly, no. My 3200x1800 scaled up 1.5 times on a
15-inch laptop display looks just great.

However, I believe this depends on the hardware you have, the scaling
algorithm for the relative resolutions you use, and of course your
eyes. :-)

> My own tendency is to adjust the settings so that I'm using a font my 
> eyes like; everything else is generally as small as possible (to get 
> maximum stuff on the screen) - even the font is as small as my eyes
> will deal with.

In how many places you need to resize the fonts, to have everything
appear correctly? Do you use apps from both the Gnome and KDE world
simultaneously (I do)? It seems to me that setting one slider is far
easier than manually resizing a whole bunch of font sizes.

How about the scroll-bars, are they wide enough to easily point to? Do
you do any manual resizing of windows, i.e., is it easy to point to the
low-right corner of the window to engage the resizing?

I agree that the screen space is a premium on laptops, but I tend to
solve that problem by using multiple workspaces/screens (typically
eight) and having only one app in fullscreen in each. More than enough
room for everything. ;-)

HTH, :-)
Marko





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Re: Laptop and only 100% and 200% monitor scaling shown

2019-05-12 Thread Marko Vojinovic
On Sun, 12 May 2019 19:00:32 +0200
Gianluca Cecchi  wrote:
> having a new 13.3" laptop with resolution of 1920x1080 and Fedora 30,
> I see that Gnome only gives me option of 100% scaling (that renders
> with too small fonts ans duch in my opinion) and 200% (that instead
> appears as too big).
[snip]
> And this if I understand implies to continue to use Wayland...
> Any better experience if using XOrg in Fedora 30 with these kind of
> displays resolutions and dimensions?

I don't know about Gnome, but in KDE with Xorg you can scale the
display anywhere between 100% to 400%, in steps of 10%. My laptop has a
native resolution 3200x1800, and I find it convenient to keep it scaled
up to 150%.

Given this, I believe that Gnome should also scale correctly with Xorg.
You may also look at man xrandr, in particular the --scale option
(RandR version 1.3). Likely this is what is actually being used under
the hood of both Gnome and KDE.

HTH, :-)
Marko
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Re: F30 Release Notes incomplete?

2019-05-05 Thread Marko Vojinovic
On Sun, 5 May 2019 17:43:06 +0200
Marko Vojinovic  wrote:
> 
> Is it just me, or the release notes for F30 haven't been written yet?
> I am looking at
> 
>   https://docs.fedoraproject.org/en-US/fedora/f30/release-notes/
> 
> and the vast majority of links inside give me a 404 error.

Ok, the links started to work, the 404 thing was probably just some
temporary fluke.

Sorry for the noise.

:-)
Marko
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F30 Release Notes incomplete?

2019-05-05 Thread Marko Vojinovic

Is it just me, or the release notes for F30 haven't been written yet? I
am looking at

  https://docs.fedoraproject.org/en-US/fedora/f30/release-notes/

and the vast majority of links inside give me a 404 error.

I tend to read the release notes before I attempt to install the new
Fedora release on my laptop, in order to get familiarized with the
latest version, and be aware of any potential pitfalls regarding my
usecases (which are sometimes unconventional). So does anyone know of
any ETA when release notes will be available?

My interest mainly revolves around these:

  
https://docs.fedoraproject.org/en-US/fedora/f30/release-notes/developers/Development_C/
  
https://docs.fedoraproject.org/en-US/fedora/f30/system-administrators-guide/Wayland/

TIA, :-)
Marko

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Re: qemu goes to 100%?

2019-04-07 Thread Marko Vojinovic
On Sat, 6 Apr 2019 12:27:01 -0400
Tom Horsley  wrote:

> Here's a weird one I just noticed: I've been using a
> Windows 10 virtual machine to run my tax software.
> I've got it displayed in virt-viewer and all is
> well, then I close the virt-viewer window and
> leave the KVM running. About 5 minutes later I
> see a cpu suddenly pegged at 100%. I run top and see
> that qemu is the culprit. I start virt-viewer
> again, and it goes back to normal.
> 
> Anyone else seen this? Why would nobody looking at
> it make it go crazy I wonder?

In addition to all the serious possibilities that everyone else already
mentioned, you may also want to take a look at the trivial reasons ---
maybe the Windows screensaver is configured to activate after 5 min of
user inactivity, and starts draining the CPU by drawing 3D intensive
stuff on the virtual display (you know --- pipes, swimming fish,
whatever). Naturally, it turns itself off as soon as it detects
keyboard/mouse activity, i.e. when you start the virt-viewer again, and 
you never even know it was there.

So you may want to take a look at all the screenlocking, screensaving,
power saving, etc... settings in Windows, and make sure all that stuff
(that doesn't make sense in a virtual machine environment), is turned
off and deactivated.

Just a thought. ;-)

Best, :-)
Marko

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Re: Web Content

2019-01-27 Thread Marko Vojinovic
On Sun, 27 Jan 2019 11:30:27 +
Patrick O'Callaghan  wrote:

> On Sun, 2019-01-27 at 11:15 +0100, Antonio M wrote:
> > What is this process that makes my computer crazy?? How can I avoid
> > it?
> 
> If you mean the process or processes that seem to suck up a lot of
> CPU, AFAIK they come from your browser. Quit the browser and they
> stop. What specifically is the problem would depend on the pages you
> have open and the extensions you use, but they seem to be associated
> with Javascript.

A utility like top or htop will tell you in real time which process is
abusing your CPU. In my case, whenever CPU is up to 100%, the culprit is
always the browser, executing some braindead javascript in an infinite
loop.

If you use firefox (like me), there are many addons out there that
enable/disable javascript on demand, or give you more fine-grained
control. Other browsers probably have something analogous as well.

I generally keep javascript off by default, and turn it on
only when I need it for a particular page. That keeps my (oldish) CPU
usage much more reasonable. Besides, most of the web pages out there
use javascript merely to display ads and other useless cruft and bloat
that just gets in my way of the actual useful content on the page.

HTH, :-)
Marko

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Re: Software for streaming audio or video over LAN

2018-12-19 Thread Marko Vojinovic
On Tue, 18 Dec 2018 21:34:29 -0800
Samuel Sieb  wrote:

> On 12/18/18 6:04 PM, Tim via users wrote:
> > You'd need to be broadcasting a stream, and have players that that
> > simply replay the current live stream, to get past that hurdle.  As
> > well as for being able to handle what one speaker system does when
> > it recovers from a signal hiccup.
> 
> That's what Logitech Media Server does.  It sends a stream and the 
> clients know what point they are at in the stream.  Adding a client
> to a synchronization group causes a brief interruption in the output
> of all clients.
> 
> > The second hurdle will be decoding delays.  You'd want to be using
> > the same playback hardware and software, on every player, to *try*
> > make everything have the same inherent delay.
> 
> That's not necessary.  You feed data ahead of the playing point, so
> the audio is already decoded when it comes time to play it.

Guys, I'm surprised that this thing is so complicated to design. If I
were to do it, I'd just have the server add a timestamp tag to each
packet, indicating that "this packet is to be played at 09:34:27 GMT",
and send enough packets ahead of time to clients. Each client then
collects enough packets, decodes the data, and plays it according to
the timestamps. Given that, any synchronization issues between the
system clocks of the clients should be handled by NTP, which already
does an excellent job.

Am I missing some obvious problem with such a design?

The only downside I see is that one cannot use it to stream live data,
i.e. someone speaking through a microphone, since any data that is to
be played back needs to be buffered at the client side (I guess several
seconds of audio). But live streaming is a different beast, here we are
mostly talking about music playback (like, mp3 or internet radio or
such), so there is no problem with data being buffered.

And I'm also surprised that LMS is the only choice here? Could it
really be true that nobody else implemented anything like this, ever?
Because to me it sounds like a quite common thing to ask for. When I
posted the question, I was expecting to receive at least 4-5 different
suggestions, and then people would start fighting over which one is the
most convenient, etc... Instead, I receive only one suggestion (LMS),
and a bunch of responses that what I'm asking for is more or less
impossible to design, which is quite surprising.

Best, :-)
Marko

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Re: Software for streaming audio or video over LAN

2018-12-19 Thread Marko Vojinovic
On Mon, 17 Dec 2018 16:50:33 -0800
Samuel Sieb  wrote:

> On 12/17/18 4:27 PM, Marko Vojinovic wrote:
> > I'm interested in your suggestions/experience regarding multimedia
> > tools for streaming audio and possibly also video via LAN (mostly
> > WiFi), played back on multiple client machines, with little to no
> > latency.
> 
> https://github.com/Logitech/slimserver (Logitech Media Server)
> 
> https://github.com/ralph-irving/squeezelite.git (client)
> 
> LMS has many plugins to serve local files or internet streams.  There 
> might be one to send local audio to it.  The squeezelite client has 
> really good synchronization.  Aside from the builtin web interface, 
> there is an open-source Android app (Squeezer) to control the server
> to choose the music for individual clients and to sync the clients.

Thanks for the suggestion, I'll try it out! The wiki pages are quite
extensive, I'm reading through some of it right now...

Btw, I don't see LMS packaged for Fedora in the standard repositories
(nor rpmfusion). I don't mind using the source (it's mostly Perl,
anyway), but just to check --- is it packaged in any of the repos I'm
unaware of?

Thanks, :-)
Marko

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Software for streaming audio or video over LAN

2018-12-17 Thread Marko Vojinovic

Hello everybody,

Huh, it's been a while... :-)

I'm interested in your suggestions/experience regarding multimedia
tools for streaming audio and possibly also video via LAN (mostly WiFi),
played back on multiple client machines, with little to no latency.

You know --- say I want to play some music on my laptop in the living
room, and I want to hear the same thing play on another computer in the
kitchen, and another one in the garage, etc... ;-)

Ideally, it should be low-latency, in the sense that playback should be
synchronized across devices. Like, if two machines are playing in two
rooms, and I'm in the hallway in between them, I shouldn't hear any
offset between the two playbacks.

I'm looking for Linux-centric solutions in general, but mostly from
Fedora or CentOS land. It should do audio, while video would probably
depend on the WiFi speed, I guess.

So far, I've been thinking of a DIY combination of bash scripts and
mplayer, but I guess it's easier to try out something that someone
already made, before I end up mocking up the whole thing from scratch
myself.

Looking for any pointers and suggestions (including keywords for
google). ;-)

TIA, :-)
Marko
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Re: F22 unusable - system freezes on login

2015-06-22 Thread Marko Vojinovic
On Mon, 22 Jun 2015 12:16:09 -0400
Matthew Woehlke mwoehlke.fl...@gmail.com wrote:

 On 2015-06-20 06:38, Tim wrote:
  Allegedly, on or about 19 June 2015, Matthew Woehlke sent:
  Remember, I *can't log in*. Not via kdm, not in a TTY, not over
  ssh, *not at all*. No login -- never even tries to start X (not
  as my user, anyway).
 
 
  (Hrm... on that note, it's interesting to note that the one and
  only GUI program I was able to try to run is Konsole...
  
  I have to ask:  If you were unable to login, how were you able to
  run anything (such as Konsole)?
 
 *Once and only once* I was able to get a desktop session, which
 allowed me to *try*, unsuccessfully, to run Konsole. (IIRC this was
 on the second attempt; the first had already failed in the manner
 that I'm now seeing always, and I was intending to run updates.)

Hardware failure?

Gambling behavior of the machine usually points to faulty hardware.

If the same set of steps don't work and then start working and then
don't work again, I am thinking memory or the harddrive. Boot from a
live image, do a memcheck and do a fsck on all partitions. Does the
machine work reliably under the live image? 

If there are no glitches with the live image, memory is probably ok,
and the most likely culprit is the harddrive. Most system files seem to
be intact because the system boots, but as soon as you try to
login, the system tries to access (either to read or to write)
something additional on the disk, and fails too badly to be able to
recover. For example, I don't really know if the system can recover
from a corrupt /etc/shadow, or something like that.

Also, just for completeness, what is your video hardware? I've seen
cases of the nouveau driver failing so badly that it locks up the
machine in ways you could never expect (like in the middle of a TTY
session, etc.).

Another stab in the dark is CPU temperature --- is the machine maybe
overheating? Does the cpu fan work? Does it sound normal? Are any parts
of the machine unusually hot to touch?

As a side note, AFAIK now sshd is disabled on fresh installs. Do a
systemctl enable sshd and systemctl start sshd (and verify with
systemctl status sshd), and retry to log in over the network. I doubt
it will work, but it's worth a try.

HTH, :-)
Marko

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Re: Video Editing with Blender on Fedora 21 x86_64

2015-05-05 Thread Marko Vojinovic
On Tue, 5 May 2015 09:57:59 -0400
Chad Kellerman sunck...@gmail.com wrote:

 Wondering if there are any Blender aficionados out there that might
 be able to give me a hand with video editing.
[snip]
 I tried loading the video and received an error  ( a generic
 error, cannot load file.)
[snip]
 any ideas?

I ran into the same issue a couple of weeks ago. It seems that
Fedora-packaged version of blender is buggy. What I did was to go to
blender's home page, download the latest .tar version, unpacked it, and
it worked flawlessly.

Blender is apparently designed to run autonomously from the directory
structure of its own (unpacked) .tar archive. So just unpack it
somewhere, cd into it, and do

  ./blender

Works perfectly, loads files and all. ;-) I didn't bother to find out
what is wrong with the Fedora-packaged version. Probably a bug should
be filed against the package.

HTH, :-)
Marko

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Re: F21: why Fedora still has not alternative init?

2015-05-03 Thread Marko Vojinovic
On Sun, 03 May 2015 14:04:37 +0200
Frantisek Hanzlik fra...@hanzlici.cz wrote:
 
 - (bigger harm) Why hasn't Fedora alternative (upstart/openrc) init?

Umm, because everyone is happy with systemd? :-)

If you want Fedora to have an alternative init, roll up your sleeves
and dig in, make it happen! ;-)

:-)
Marko

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Re: F21: why Fedora still has not alternative init?

2015-05-03 Thread Marko Vojinovic
On Sun, 3 May 2015 10:57:55 -0400
Tom Horsley horsley1...@gmail.com wrote:

 On Sun, 3 May 2015 15:45:36 +0100
 Marko Vojinovic wrote:
 
  Umm, because everyone is happy with systemd? :-)
 
 Not the slightest possibility that is true. I have a more
 likely reason for the universal adoption of systemd:
 
 http://home.comcast.net/~tomhorsley/game/selection.html

Oooh, I see, writing buggy and ill-documented code is (ultimately)
better for the market survival of the software company! Evolution on
steroids! Bravo! :-D

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Re: F21: why Fedora still has not alternative init?

2015-05-03 Thread Marko Vojinovic
On Sun, 03 May 2015 17:33:53 +0200
Frantisek Hanzlik fra...@hanzlici.cz wrote:

 Marko Vojinovic wrote:
  On Sun, 03 May 2015 14:04:37 +0200
  Frantisek Hanzlik fra...@hanzlici.cz wrote:
 
  - (bigger harm) Why hasn't Fedora alternative (upstart/openrc)
  init?
  
  Umm, because everyone is happy with systemd? :-)
  
  If you want Fedora to have an alternative init, roll up your sleeves
  and dig in, make it happen! ;-)
  
  :-)alternative init
  Marko
 
 Marko thanks to Your reply, but:
 - All around perhaps are not happy, as I'm not. And perhaps all those,
 who do not have the ability to say it here.
 
 - about 'alternative init' what can you recommend to me to make this
 happen? I must say, I'm not programmer, rather user and administrator
 for several Linux/Un*x machines. But I really want somehow interest
 in this issue.

I guess the smileys I put up there didn't do their job.

My comment above was tongue-in-cheek. It is the type of the response
one gets from systemd-advocates whenever a question similar to yours
pops up on this list.

The init system is not just any old package that you can replace on
your system. Rather, it is an integral piece of gear, interwoven with
the kernel and a whole bunch of other mission-critical apps for any
Linux distro. In this sense, changing one init system for another is a
highly nontrivial task, and requires expert knowledge of all sorts of
under-the-hood stuff in Linux. There are not so many people on the
planet who have the knowledge to actually sit down and write an in-place
substitute for systemd. That is why there is no alternative for Fedora.

In other words, if you want to make an alternative init system, you need
to be somewhat like Lennart Poettering. And he is a tough act to
follow, in more ways than one... ;-)

My approach to this issue has been to learn to live with systemd, and
hope that the reasons for its existence will ultimately be of global
benefit. It's the same frame of mind one has when paying taxes ---
they're unavoidable, painful for the individual, and are supposed to
be beneficial for the progress of the community (although that's not
immediately obvious to the individual).

I do this by learning about systemd on-the-fly --- as much as I need to
get my job done, and never any more than that. :-)

HTH, :-)
Marko

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Re: Does KDE do offline software updates?

2015-03-25 Thread Marko Vojinovic
On Thu, 26 Mar 2015 01:01:36 +
Patrick O'Callaghan pocallag...@gmail.com wrote:
 On Wed, 2015-03-25 at 16:42 -0700, Rick Stevens wrote:
  If you update libraries a running program uses, it won't get the new
  libraries until it is restarted since it's already got a copy. In
  fact, I think any program that starts and wants that updated library
  will get the old version as it's already in memory.
 
 Are you sure of that? I always assumed that shared libraries are just
 files and once a file is replaced the normal rules apply, i.e.
 anything that opened it before the replacement gets the old version,
 anything that opens it afterwards gets the new one. That's how
 inconsistencies can arise.

I'd second that question. I can easily imagine a running program which
loads a library on *demand*, not on its start-up. So a program may
start regularly, work for a while, and then try to load some library ---
only to find out that the library was updated to an incompatible version
in the meantime.

Yum will of course make sure that there is a new version of the program
itself which is compatible with the new library, but that is not
necessarily the version of the program currently running in memory.

At least, that's how I tend to explain firefox-updating glitches to
myself. :-)

Best, :-)
Marko

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Re: (La)TeX suddenly can't find anything

2015-02-12 Thread Marko Vojinovic
On Wed, 11 Feb 2015 23:24:40 +0100
Andras Simon sza...@gmail.com wrote:

 I've been using LaTeX on a fully updated Fedora 21, but now suddenly
 even TeXing the simplest plain TeX file produces this:
 
 warning: kpathsea: /usr/share/texlive/texmf-config/ls-R: No usable
 entries in ls-R.
 warning: kpathsea: See the manual for how to generate ls-R.

//  Rule number one for anything TeX-related: before you proceed, make
sure that you understand what is going on. ;-)  //

The warning messages are pretty clear: kpathsea is telling you that the
ls-R database is empty or corrupted, and that it should be regenerated.
It also suggests that you look into the manual about how to regenerate
the database.

The easiest way to find the relevant man page is this:

$ apropos ls-R
mktexlsr (1) - create ls-R databases
texhash (1)  - create ls-R databases

These two man pages actually both point to the mktexlsr man page, which
tells you how to use it to regenerate the ls-R database. In short, you
need to log in as root, and invoke mktexlsr with no arguments, like
this:

# mktexlsr 
mktexlsr: Updating /usr/share/texlive/texmf-config/ls-R... 
mktexlsr: Updating /usr/share/texlive/texmf-dist/ls-R... 
mktexlsr: Updating /usr/share/texlive/texmf-local///ls-R... 
mktexlsr: Updating /usr/share/texlive/texmf-var/ls-R... 
mktexlsr: Done.

Hopefully that should regenerate the ls-R database on your system,
making kpathsea happy.

By the way, the ls-R database is the list of full paths of all
TeX-related files. A long long time ago in a galaxy far far away it used
to be generated manually by executing the command ls -R for a given
directory and putting the result in the (creatively named) ls-R file,
which kpathsea could search through and inform TeX where in the
directory tree it can find the file it needs. Today, the database is
generated by the elaborate bash script (do a less /usr/bin/mktexlsr
to see the details), but it still boils down to going to the
appropriate directory and taking the output of ls -R.

Finally, all four ls-R databases which I have above are ASCII files,
literally the output of ls -R for the appropriate directory, with a
couple of lines appended at the beginning. So the fact that you have
binary files there smells to me like something being very wrong with
your files, probably due to the corrupted filesystem you had to deal
with before.

HTH, :-)
Marko

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Re: Disabling a specific key

2014-12-18 Thread Marko Vojinovic
On Fri, 19 Dec 2014 10:34:54 +1300
Rolf Turner r.tur...@auckland.ac.nz wrote:
 On 19/12/14 08:27, jd1008 wrote:
 
  If you do not know the KeyCode, run the program:
  showkey
 
  and press the key in question
  and it's code will be displayed.
  You must wait 10 seconds of idle
  and showkey program will exit;
  then run the sudo script above.
 
 
 This looks very useful to me  but as usual I fall at the first 
 hurdle.  When I type showkey or showkey -k I get:
 
  Couldn't get a file descriptor referring to the console
 
 And that's it.  Anything I can do about this?  (Please note:  I am 
 running Fedora 17 --- yes, I know --- and using a Mate desktop; Mate 
 1.6.1 .)

You need to run showkey in a proper virtual terminal, aka ctrl-alt-f3
or such. It was not designed to work under X.

HTH, :-)
Marko


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Re: xinit -- :1 Not working for F21

2014-12-17 Thread Marko Vojinovic
On Wed, 17 Dec 2014 20:40:33 +1100
Philip Rhoades p...@pricom.com.au wrote:
 
 I occasionally start a second X display from a console login with:
 
xinit -- :1
 
 but after upgrading to F21 it just hangs with an underscore in the
 top left of the screen and I have to do a remote log in and kill the 
 process.  I attach the log but I am not sure if it indicates what the 
 problem is . .

I'd try to look into the cause of these:

[268529.443] (II) intel(0): switch to mode 1440x900@60.0 on VGA1 using
pipe 0, position (0, 0), rotation normal, reflection none
[268529.449] (EE) intel(0): failed to set mode: Permission denied [13]
[268529.450] (WW) intel(0): failed to restore desired modes on VT switch
[268529.450] (EE) intel(0): sna_mode_check: invalid state found on pipe
0, disabling CRTC:7

The permission denied piece smells bad... :-)

HTH, :-)
Marko

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Re: getting rid of yum

2014-12-15 Thread Marko Vojinovic
On Mon, 15 Dec 2014 16:46:53 +
Patrick O'Callaghan pocallag...@gmail.com wrote:
 On Mon, 2014-12-15 at 10:34 -0600, Ranjan Maitra wrote:
  Because (from what I understood, perhaps incorrectly) yum is going
  away in favor dnf, I was trying to get used to the latter. Because
  the former is so ingrained in me, I was trying to get rid of it
  from the system so that not having it available would force me to
  think and thus get used to dnf.
 
 Or you could alias yum to echo Use DNF

My understanding is that the name dnf is just a dummy placeholder,
so that --- once its code matures enough and the old yum code gets
obsolete --- dnf will simply be renamed to yum, and its major
version number increased by a notch.

So the name yum isn't going anywhere, AFAIK.

Best, :-)
Marko

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Re: So acrobat is dead for linux - long live evince?

2014-12-15 Thread Marko Vojinovic
On Mon, 15 Dec 2014 21:15:50 -0500
Robert Moskowitz r...@htt-consult.com wrote:
 
 What are people doing for pdf reading native on Fedora other than
 evince (F20 is 3.10, F21 is 3.14)?

Being a happy KDE user, I like okular.

And I use it not just for pdf, but a whole assortment of other document
formats like dvi, djvu, ps, epub, and so on. 

That said, I never needed to fill any forms and such stuff into a pdf
file, so I wouldn't know of any okular's advanced capabilities beyond
actually displaying the file.

HTH, :-)
Marko

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Re: selinux relabel at boot

2014-12-13 Thread Marko Vojinovic
On Sat, 13 Dec 2014 09:52:35 -0500
Tom Horsley horsley1...@gmail.com wrote:
 Just a note for someone who might care about this:
 
 I foolishly forgot to disable selinux in a system
 I created by copying all the files from a virtual image.
 
 When it booted, it said I've got to relabel everything,
 this may take a while.
 
 So I figured I'd just wait for it, then a few minutes
 later a message came up about a watchdog expiring
 and it rebooted the system.
 
 What fun :-). I assume it could have done that all day,
 but I took advantage of the reboot to disable selinux.

I'm curious --- after the reboot, selinux should continue
relabeling remaining files, right? So I assume that after a certain
numbers of reboots it would eventually finish and continue booting?

Or not?

Though I agree that selinux should somehow inform the watchdog that a
global relabel is in progress and that it may take more time than
usual...

Best, :-)
Marko

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Re: fedora 20, on my system, actually works only to line command.

2014-12-12 Thread Marko Vojinovic
On Thu, 11 Dec 2014 18:18:33 +0200
Angelo Moreschini mrangelo.fed...@gmail.com wrote:

 of course I try to understand ...
 actually the problem could be connected to the SW (the interface) for
 using the DVI, that doesn't works (that says poma)..
 We are looking to reinstall  nvidia that supplies this interface...
 That is right ?

Yes, that is right. The open-source nouveau driver supplied by Fedora
is under heavy development, but in a sizable number of cases it is
still not ready for prime time. Therefore it those cases (like yours)
it makes sense to install the closed-source nvidia drivers, which are
known to work almost faultlessly. The procedure I described installs
those drivers from the rpmfusion repository (which is by far the most
preferred method of instalation).

 I made what you suggested :
 1.  yum remove kmod-nvidia
 output : REMOVED

Ok.

 2.  yum remove xorg-x11-drv-nvidia
 output: complete

Ok.

 3.  yum install kmod-nvidia-304xx
 output: install 1 Package (+3 dependent packages)
complete!

Ok, this is good.

 4.  I reboted but all is same as before (nothing changed).

 I send you the log file (in the traditional way..)

The log file does not look as I would expect it to --- it indicates that
the nouveau driver is still being loaded. The installation of
kmod-nvidia should automatically disable nouveau and make sure nvidia
driver is loaded instead.

Given that you have installed kmod-nvidia correctly, I do not
understand why nouveau is still active.

It appears that the problem is deeper than just installing appropriate
drivers. It needs more detailed analysis of your system to figure out
what is going wrong.

I am sorry my advice didn't help you. Maybe someone else can chime in
with a fresh idea what might be wrong here.

Best, :-)
Marko

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Re: fedora 20, on my system, actually works only to line command.

2014-12-11 Thread Marko Vojinovic
On Thu, 11 Dec 2014 09:17:14 +0200
Angelo Moreschini mrangelo.fed...@gmail.com wrote:
 On Thu, Dec 11, 2014 at 1:50 AM, Marko Vojinovic vvma...@gmail.com
 wrote:
 
  On Wed, 10 Dec 2014 16:18:10 +0200
  Angelo Moreschini mrangelo.fed...@gmail.com wrote:
  
   I made all you suggested :
  yum localinstall --nogpgcheck 
  yum install kmod-nvidia
  shutdown ...
  
   Nothing was change however .

From the new log file I see that nouveau is still in use, which means
that something went wrong with the above commands. Did either report any
errors?

It would be more convenient if you could try not to just blindly follow
my instructions, but rather try to understand what is going on. After
you did the yum install kmod-nvidia, what did it reply? Was it
successfully installed (it should say Complete! when it finishes) or
not?

By the way, I think that the installation was unsuccessful because your
graphics card requires the 304xx driver instead of the latest
331xx (there is also the 173xx driver for the oldest lineage of
nvidia cards).

So I suggest you try the following:

(1) log in as root

(2) look into the output of

  yum repolist

and make sure that rpmfusion free and rpmfusion nonfree are listed
there. If they are not, we need to fix that before proceeding further.
What does it say?

(3) if everything was ok in step (2), do all of these, in order:

  yum remove kmod-nvidia
  yum remove xorg-x11-drv-nvidia
  yum install kmod-nvidia-304xx

and answer with a yes when each time it asks you to confirm. After it
finishes report back here what did it tell you? Did the installation
succeed or fail? Did it report any errors?

(4) if step (3) succeeded, do a

   shutdown -r now

and verify that graphical interface works after the reboot. If it still
doesn't work, send me the latest /var/log/Xorg.0.log again to see.

(5) finally, if step (3) did not succeed tell me what the error message
was.

HTH, :-)
Marko

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Re: fedora 20, on my system, actually works only to line command.

2014-12-11 Thread Marko Vojinovic
On Thu, 11 Dec 2014 16:11:05 +0100
poma pomidorabelis...@gmail.com wrote:
 On 11.12.2014 14:15, Marko Vojinovic wrote:
  On Thu, 11 Dec 2014 09:17:14 +0200
  Angelo Moreschini mrangelo.fed...@gmail.com wrote:
  On Thu, Dec 11, 2014 at 1:50 AM, Marko Vojinovic
  vvma...@gmail.com wrote:
 
  On Wed, 10 Dec 2014 16:18:10 +0200
  Angelo Moreschini mrangelo.fed...@gmail.com wrote:
 
  I made all you suggested :
 yum localinstall --nogpgcheck 
 yum install kmod-nvidia
 shutdown ...
 
  Nothing was change however .
  
  From the new log file I see that nouveau is still in use, which
  means that something went wrong with the above commands. Did either
  report any errors?
  
  It would be more convenient if you could try not to just blindly
  follow my instructions, but rather try to understand what is going
  on. After
 
 The same goes for you, mister instructor.
 The same PCI ID was in the first Xorg log,

This problem is actually solved in a much more convenient way in the
CentOS community. There, one can just 

  yum -y install nvidia-detect  nvidia-detect

and find out which driver one is supposed to install. This is much
more streamlined than manually looking up PCI ID's in Xorg.0.log, then
looking up the instructions at the rpmfusion page, then figuring out
which driver the user has to install.

A typical novice user should not be expected to decypher PCI ID's in a
log file. An experienced user who offers his time and advice for free
on a a mailing list should not be expected to do so either.

If it were up to me, I'd make a meta-package named kmod-nvidia which
would execute the nvidia-detect script, pick up the answer automatically
and then install appropriate kmod-nvidia-331xx/304xx/173xx driver as a
conditional dependency. Then all of these issues would simply go away.

But alas, it is not up to me...

Best, :-)
Marko


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Re: fedora 20, on my system, actually works only to line command.

2014-12-10 Thread Marko Vojinovic
On Wed, 10 Dec 2014 16:18:10 +0200
Angelo Moreschini mrangelo.fed...@gmail.com wrote:
 
 I made all you suggested :
yum localinstall --nogpgcheck 
yum install kmod-nvidia
shutdown ...
 
 Nothing was change however .
 
 is there anything that I can still try ?

Send me again the latest version of /var/log/Xorg.0.log file. If X is
failing even with the nvidia driver, then something else might be the
cause of the problem. But I cannot be sure without looking into that
file.

Best, :-)
Marko



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Re: fedora 20, on my system, actually works only to line command.

2014-12-09 Thread Marko Vojinovic
On Tue, 9 Dec 2014 11:46:08 +0200
Angelo Moreschini mrangelo.fed...@gmail.com wrote:

 this is the file Xorg.0.
 
 I asked more assistance,  because  I didn't understand:
 I thougth you suggested to me to create an environment chroot jail

I never suggested anything like that, you probably confused different
e-mails. :-)

I looked at Xorg.0.log, and while appears normal in there, I guess that
the nouveau driver does not work properly for you. You should try the
closed-source nvidia driver:

(1) enable rpmfusion repository for yum (if you don't have it enabled
already)

(2) yum install kmod-nvidia

(3) reboot the machine.

If everything works ok, it will boot into a graphical environment.

HTH, :-)
Marko


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Re: fedora 20, on my system, actually works only to line command.

2014-12-09 Thread Marko Vojinovic
On Tue, 9 Dec 2014 18:05:53 +0200
Angelo Moreschini mrangelo.fed...@gmail.com wrote:

 So I would pray you to explain:
 
- if kmod-nvidia must be downloaded from the Internet or if it is
already on the  computer.

The kmod-nvidia package must be downloaded from the Internet, from the
rpmfusion repository, via yum (since it depends on other packages which
yum will also have to download, automatically). Fedora needs to
have a working Internet connection for yum to work.

- how can I check if RPMFusion repository is already enabled for
 yum (and how to enable it - if necessary)

You can check whether rpmfusion is enabled by typing

  yum repolist

and verifying if rpmfusion (free and nonfree) is in the list of
configured repositories. If not, the instructions for enabling
rpmfusion are given on its website,

  http://rpmfusion.org/Configuration

Since you only have access to the command line, I suggest that you

(a) log in as root

(b) copy-paste the following (or type it veeery carefully) as a single
line (beware that your a client may do word-wrapping, type spaces
instead of newlines):

yum localinstall --nogpgcheck 
http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm 
-E %fedora).noarch.rpm 
http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm 
-E %fedora).noarch.rpm

This will configure yum to use both free and nonfree rpmfusion repos.

(c) type

  yum install kmod-nvidia

and say yes when asked to confirm.

(d) type

  shutdown -r now

to reboot the machine.

HTH, :-)
Marko

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Re: fedora 20, on my system, actually works only to line command.

2014-12-08 Thread Marko Vojinovic
On Mon, 08 Dec 2014 10:02:59 -0800
Joe Zeff j...@zeff.us wrote:

 On 12/08/2014 09:35 AM, Angelo Moreschini wrote:
  But always (in each of the above cases), the command systemctl
  get-default, provides as output grafical.target.
 
  I tried the command: systemctl isoltate graphical.target, but,
  after a short time when it flashed the graphic symbol of Fedora
  (stylized letter F), everything is back to the initial situation.
 
 If your default is, as you wrote, grafical.target and not simply a 
 typo, that might be a large part of the problem.  It needs to be set
 to graphical.target in order to work.  And, of course it's
 isolate not isoltate.

Also, if the issue is not due to typos, the symptoms suggest that X is
failing to start. Log in as root, copy the full content
of /var/log/Xorg.0.log to a pastebin or similar, and send us the link
to analyze it.

In the vast majority of cases, it is the issue of
missing/incorrect graphics drivers, or of misconfigured xorg.conf file
(if you have a stale one lurking around).

HTH, :-)
Marko

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Re: Guest OS on VBox and key bindings

2014-11-29 Thread Marko Vojinovic
On Sat, 29 Nov 2014 17:34:50 +0530
Sudhir Khanger m...@sudhirkhanger.com wrote:

 On Wednesday, November 26, 2014 03:55:29 PM jd1008 wrote:
  Is there a way to alter key bindings so that key sequences
  like Ctl+Alt+Fn  (n=19) can be intercepted by GUEST and
  be able to see a GUEST virtual tty?
 
 VirtualBox generally uses Host+key combination. You can alter this
 behavior in 
 FilePreferenceInput.
 
By default, VBox uses right CTRL as the host key. That means that the
left CTRL key should be passed to the guest and should work as expected.

If you can adjust to using only the left CTRL, you're good. Otherwise,
if you are really really used to typing with both of them,
reconfigure the VBox manager to move the host key to something else that
you don't use often (stuff like the Scroll Lock or Pause/Break or any
of the potential multimedia keys that you don't otherwise use should
do).

HTH, :-)
Marko

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Re: monitor arrangement

2014-11-28 Thread Marko Vojinovic
On Fri, 28 Nov 2014 10:23:36 -0500
Mickey binary...@comcast.net wrote:
 
 Ed
 haven't they removed xrandr from KDE ??

The xrandr utility has nothing to do with KDE, it is a part of X (more
precisely, xorg-x11-server-utils).

And no, it has not been removed, it is still available and usable.

HTH, :-)
Marko

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Re: F20, XFCE : no X - xf86EnableIOPorts failed - FBIOBLANK Invalid

2014-08-20 Thread Marko Vojinovic
On Wed, 20 Aug 2014 10:02:09 -0400
sean darcy seandar...@gmail.com wrote:

 I've just installed F20 on on an Acer Asprire, A8-7100,  R5 Kaveri
 graphics.
 
 startx runs, then exits the server.
 
 My errors show /dev/dri/card0 no such file. Is this because the
 kernel isn't loading the radeon module?
 
 Xorg.0.log shows the radeon driver loaded:
[snip]

Do you have something in /etc/X11/xorg.conf or /etc/X11/xorg.conf.d/ ?

Can you provide the full log file, just to be sure?

What is the output of lspci | grep vga?

Best, :-)
Marko

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Re: F20 is fubar

2014-08-19 Thread Marko Vojinovic
On Tue, 19 Aug 2014 18:04:31 +
davidscha...@mobilicity.blackberry.com wrote:
 As far as I am concerned the full system dvd is really not the way to
 install F20.
[snip bunch of FUD]

And here I was, wondering when we'll have a go at another traditional
gigantic-troll'n'fud-party-thread on the list. It's been a while since
the last one...

:-D

Best, :-)
Marko

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Re: FC 20 and new skype?

2014-08-09 Thread Marko Vojinovic
On Sat, 09 Aug 2014 12:53:05 -0700
Paul Erickson va...@telus.net wrote:

 Yes that is the version I am referring to, but when I execute it, the 
 heading still reads version 4.2 and when I try to login, the
 connection is refused.
 
 Did you have to remove the previous version, if so, what process did
 you use to do that?

It depends how you installed the previous version. In my case, I
downloaded the Fedora 16 rpm (it was for i586 or something...) from the
Skype website, did a yum localinstall ./skype-whatever.rpm, and yum
took care of everything. After that, version 4.3 Just Works(tm).

The point here is that I have previously used the same method to
install v4.2, so it got upgraded automatically. If you installed the old
version by some other method, like unpacking the tarball into /opt, you
have to remove it manually.

// As a side note, this kind of situation is a textbook example why rpm
is preferred over tarballs... //

The second thing you should check is that you have actually exited the
old version. Closing down the Skype window isn't enough, you need to
find it in the system tray (or whatever is the equivalent for your DE),
right-click and choose quit from the menu. Or do a killall skype
in the terminal. Then start it again and verify which version is
running.

You can also do a which skype to figure out what binary is being used
when you start it. It will probably say /usr/bin/skype, so then you can
do a ls -l /usr/bin/skype and file /usr/bin/skype to see if it is an
actual binary, a symbolic link to something else, or a bash script
which invokes the binary internally. Either way, you will be pointed to
the location of the actual binary. Delete it, and reinstall the 4.3
version (preferably using yum).

HTH, :-)
Marko

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Re: how to disable tmpfs

2014-08-08 Thread Marko Vojinovic
On Fri, 8 Aug 2014 12:39:39 -0500
Chris Adams li...@cmadams.net wrote:
 Once upon a time, Dennis Kaptain dennis.kapt...@gmail.com said:
  It still doesn't seem like an ideal way to handle /tmp when I have a
  perfectly good partition and swapping is a major performance killer.
  I'd rather disk access wait time is caused by accessing /tmp when I
  need to rather than swapping tmpfs in and out for a program.
 
 Swapping tmpfs files to swap is no more of a performance killer than
 writing /tmp to disk to begin with (the same data would be written to
 the same disk, just in a little bit different format and location).

Please, please don't start about this stuff yet again.

It has been rehashed many times over, in countless places on the net:
if your typical usecase does not involve large files in /tmp and you
have enough RAM to never hit swap, tmpfs is more efficient. Otherwise,
disk is more efficient. Everyone needs to decide for themselves, and
configure their system accordingly.

If the OP has already decided what he wants, just tell him how to
configure it, rather than trying to persuade him that your size fits
all.

HTH, :-)
Marko

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Re: new kernels rebooting

2014-07-22 Thread Marko Vojinovic
On Tue, 22 Jul 2014 16:56:00 +0530
Sudhir Khanger sud...@sudhirkhanger.com wrote:
 
 What problems one could face if I were to not reboot my system for a
 while and let it update a few kernel versions?

Well, for example, a kernel update might be due to some new severe
security exploit, and the old kernel might be vulnerable to it. Running
an old kernel on an Internet-facing system might then be a Bad Idea(tm).

In theory, for each kernel update you could look at the changelog to
see what was actually updated and why, and then decide if you need to
run the updated kernel or not. But most people typically don't want to
invest the time and effort to do that, if it's easier to just reboot
the system. These things should be decided on a case-by-case basis. :-)

HTH, :-)
Marko


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Re: systemd config files???

2014-07-22 Thread Marko Vojinovic
On Tue, 22 Jul 2014 12:26:57 +0100
Balint Szigeti balint.s...@gmail.com wrote:

 Why doesn't system respect FSH? What is its benefit?
[snip]
 I think, the config files should store in /etc instead of everywhere
 else. The chroot applications are exceptions. It cause we MUST
 mount /usr in / (root) partion.

The _New_Way_ of looking at config files is the following: the
*default*, rpm-provided config files should reside somewhere in /usr,
while the *customized*, manually tweaked (portions of) config files
should reside in /etc. This way there is a clear demarcation between
the package manager territory (/usr) and admin's territory (/etc).

In such a setup the yum update of a given package can update the default
configuration without destroying your customizations. It will also
make /etc much cleaner, easier to examine, fix, migrate, backup, and so
on.

There is a general push to make this happen for all apps, not just
systemd, and you should get used to seeing it all over the place.
I wouldn't be surprised if the near-future Fedora releases have clean
installs with an almost-empty /etc, waiting for you to put your
customizations in it. Personally, I think it's a good idea, and it will
certainly make my own machines much easier to maintain.

Whether this is FSH-compliant or not, I don't know. Some people say it
is, some people say it is not, most of the people don't really care. :-)

HTH, :-)
Marko

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Re: systemd config files???

2014-07-22 Thread Marko Vojinovic
On Tue, 22 Jul 2014 15:03:39 +0200
Ralf Corsepius rc040...@freenet.de wrote:
 
 A package, which does not provide a means to override configuration 
 files from below /etc, or requires users to modify files below /usr
 is broken by design.

Agreed, but I don't seem to fully understand your point here. Are you
suggesting that there are packages which are currently broken in this
way? Do you know of any examples? If not, why did you raise this point?

Best, :-)
Marko

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Re: new kernels rebooting

2014-07-21 Thread Marko Vojinovic
On Mon, 21 Jul 2014 18:37:58 +0200
Heinz Diehl h...@fritha.org wrote:
 Here's what I'm doing (and what I basically have been doing in many
 years):
 
[snip]
 
 In short: a simple kernel compile/install. Your kernel will live 
 peacefully alongside with your distribution kernel(s).

What is the purpose of installing a non-Fedora kernel, in your case?

Also, when the new security/bugfix patches land into the kernel tree, do
you recompile it again, or what? How much time do you devote to kernel
maintenance, on a monthly basis?

Best, :-)
Marko

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Re: eth0 again

2014-07-20 Thread Marko Vojinovic
On Sun, 20 Jul 2014 16:16:15 -0600
JD jd1...@gmail.com wrote:
 
 Well, desktop fans will soon fall into the minority :)

Comparing the number of smartphones, tablets and laptops to
desktops, they already are a minority. However...

If anything, the paradigm of a workstation is certainly not going
away. Programming, web design, businessoffice, CAD, animation and video
production, gaming --- those are only some of typical real world
usecases that need a large enough (or even high-end) display, a serious
keyboard, and serious processing power with an extendable amount of RAM.

None of this can be done (not seriously, anyway) on a laptop, let alone
the tablet or a phone. So there will always be a market for desktops.

HTH, :-)
Marko


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Re: eth0 again

2014-07-20 Thread Marko Vojinovic
On Sun, 20 Jul 2014 23:53:33 + (UTC)
Amadeus W.M. amadeu...@verizon.net wrote:
 
 Unfortunately the device is sill named em1, not eth0. So it's not NM. 
 I don't understand why the udev rules files are ignored. Bug maybe? 
 I'll report it and see what happens.

AFAIK udev rules allow you to rename your network device to any name
*except* to eth. The eth namespace is reserved for the kernel, and udev
will refuse to rename anything to that. But it should work for any
other name you choose, like lan0, net0, etc. I remember reading about
this somewhere, but atm cannot find the right link. But the essential
explanation is given here:

http://lists.us.dell.com/pipermail/linux-desktops/2011-February/003762.html

The only thing I can think of is to pass

  biosdevname=0 net.ifnames=0

to the kernel, and hope.

But the real solution is to talk to Matlab developers and ask them to
fix their software (if you paid for it, you should have some leverage
in that). The eth namespace is not coming back, and the sooner they fix
their software, the better for their customers.

HTH, :-)
Marko




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Re: fc20 with full updates: unable to pair with wifi router

2014-05-05 Thread Marko Vojinovic
On Sun, 4 May 2014 20:41:03 -0700
Luke Nath luken...@hotmail.com wrote:
  Date: Mon, 5 May 2014 00:46:16 +0100
  From: vvma...@gmail.com
  To: users@lists.fedoraproject.org
  Subject: Re: fc20 with full updates: unable to pair with wifi router
  Just to be sure --- you did use wpa_passphrase to generate the value
  for the psk entry above, right? I mean, you didn't put the actual
  plain-text passphrase in that field?
 
 Hi Marko,
 In the wpa_supplicant.conf file, you can just put the ascii string
 quoted in double quotes, or the unquoted psk  generated from
 invoking wpa_passphrase. Look it up in the man pages.

Nevertheless, my suggestion was to try psk generated with
wpa_passphrase. Does it produce the same error?

Best, :-)
Marko

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Re: fc20 with full updates: unable to pair with wifi router

2014-05-04 Thread Marko Vojinovic
On Sun, 4 May 2014 15:35:30 -0700
Luke Nath luken...@hotmail.com wrote:

 My wifi interface is not managed by NetworkManager.
 I start wpa_supplicant manually.
 
[snip]
 
 network={
 bssid=xx:xx:xx:xx:xx:xx
 ssid=mynewssid
 scan_ssid=1 # only needed if your access point uses a hidden ssid
 mode=MANAGED
 key_mgmt=WPA-PSK
 proto=WPA2
 pairwise=CCMP
 group=CCMP
 psk=xxx
 }

Just to be sure --- you did use wpa_passphrase to generate the value
for the psk entry above, right? I mean, you didn't put the actual
plain-text passphrase in that field?

Best, :-)
Marko




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Re: NVidia/Gnome Manager issues

2014-03-20 Thread Marko Vojinovic
On Thu, 20 Mar 2014 09:42:59 -0400
Weiner, Michael wein...@ccf.org wrote:
 One of my questions is, is it better to use the NVidia drivers from
 NVidia (eg NVIDIA-Linux-x86_64-331.49.run I believe these are the
 latest for this card) or use the kmod/akmod and related nvidia
 packages from rpmfusion?

Definitely the kmod driver from rpmfusion, forget nVidia's .run file.

 And would having the latter packages on the
 machine cause any conflicts?

Installing nVidia's .run package will create various conflicts and
problems when updating the graphics libraries from the regular Fedora
repos.

Rpmfusion's kmod package was created precisely to address the issues
of nVidia's original driver, and to repackage it for painless and
maintenance-free use on Fedora.

The akmod package was created for those people who cannot wait 24hrs
before running the latest kernel (I found very few --- if any ---
legitimate reasons for doing that). The kmod driver can hit the repos
up to a day behind the latest kernel update, and if you absolutely
cannot do without that latest kernel during that one day, you can use
the akmod package, which will autocompile the nVidia's driver on reboot
into the new kernel. This usually takes several minutes to complete,
and sometimes people think that their machine hung during boot. And
then they hard-reset the machine in the middle of the compile process.
And then the thing starts to compile again on next reboot. And after
several tries they come here to complain that after a regular update
their machine hangs on boot. And then other people here go on a
witch-hunt for the offending package. And then...

You get the point. :-)

So follow the instructions on http://rpmfusion.org/Howto/nVidia , use
the kmod package, and you're good.

HTH, :-)
Marko

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Re: Review of best photo managers?

2014-03-20 Thread Marko Vojinovic
On Thu, 20 Mar 2014 15:42:24 -0400
Alex mysqlstud...@gmail.com wrote:
 I'd just like to be able to do some basic cropping, view the EXIF
 data, tag a bunch of photos to be copied or deleted at once, and
 maybe upload to a photo album or something...

   yum install gwenview gthumb

For other possibilities, see

   yum search image | grep viewer

There are many viewers out there... ;-)

HTH, :-)
Marko


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Re: AMD Catalyst Control Center doesn't work

2014-03-13 Thread Marko Vojinovic
On Wed, 12 Mar 2014 09:17:13 -0500
Rex Dieter rdie...@math.unl.edu wrote:
 Marko Vojinovic wrote:
  ATI is known to have a notoriously lousy support for Linux in
  general and Fedora in particular. For their low-end and oldish
  cards, they provide specs on which the Linux community has built the
  open-source radeon driver (which works well). For their high-end
  cards, they refuse to provide specs (so no open-source driver),
 
 I've been a long-time advocate for AMD/ATI, largely due to their
 making available the specs.  Do you have references or citations to
 support the claim that specs are not available for some/high-end
 cards?

Ok, now that I did some research --- you're right, I stand corrected
--- they did publish the specs for the high-end models 6 months ago,
back in October 2013. Hopefully by now the radeon devs implemented
them. :-)

But what I remember is that this was not the case in recent years
(until last October, that is). Some years back when ATI announced the
release of the specs, there was a lot of hype about ATI supporting the
Linux community etc., but the actual specs were released only for
low-end, obsolete cards. This was very disappointing, and that
situation was perpetuated for a while. For example, the Radeon HD
family of cards was not supported by the open-source driver for quite a
while, and there were a lot of problems with the then-experimental
radeonhd driver. It was useless, and I had to install the fglrx driver
on several Fedora (Core) releases to get 3D support. And it was always a
major pain.

I admit being out of the loop recently, I wasn't aware that ATI came
completely straight last year. :-)

Best, :-)
Marko

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Re: AMD Catalyst Control Center doesn't work

2014-03-13 Thread Marko Vojinovic
On Thu, 13 Mar 2014 09:17:12 -0400
Paul Cartwright pbcartwri...@gmail.com wrote:
 so, what should I install? I removed the catalyst software using the
 uninstall.sh and now have the radeon driver in xorg.conf. At least
 now I can move windows around without a lag.. should I install fglrx
 drivers?

No, you should not install fglrx drivers. The proper driver for your
card is the radeon driver --- keep using it and you're good.

HTH, :-)
Marko

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Re: DNF vs. YUM

2014-03-13 Thread Marko Vojinovic
On Thu, 13 Mar 2014 11:09:31 -0700
Joe Zeff j...@zeff.us wrote:
 On 03/13/2014 07:04 AM, Mark Haney wrote:
  Making RPMs and yum more efficient is great, don't get me wrong.

 Making them faster != making them more efficient if they end up not 
 updating everything because they're using obsolete metadata.  That's 
 just pushing the time needed for the upgrade into the future and 
 pretending it doesn't exist.

Well to be fair, updating the machine is not the only thing one can do
with yum. I often find myself querying about a package with
yum info packagename or listing/removing installed packages, etc. And
each time it's a major pain to wait for the metadata to get updated,
especially since it is completely unnecessary for those operations.

So I can see a valid point for usecases where you don't want to update
metadata every time you run yum.

Besides, keeping the machine up-to-date is something that should be
done automatically in the background, by cron, PackageKit or
otherwise, and the ordinary user should not need to be bothered with
the metadata. Sooner or later metadata will get refreshed and updates
will flow to the machine. I really don't see a difference if it happens
today or tomorrow.

And finally, for the enthusiast cli folks (like myself) who yum update
manually, inspect what is about to be updated before proceeding, etc.,
it should not be a big problem to yum clean metadata immediately before
yum update. So I don't see a very valid case for the old yum behavior
anyway. And the increase in speed with dnf can be substantial.

Best, :-)
Marko


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Re: AMD Catalyst Control Center doesn't work

2014-03-12 Thread Marko Vojinovic
On Wed, 12 Mar 2014 09:11:01 -0400
Paul Cartwright pbcartwri...@gmail.com wrote:
 I have googled  read all I could find, with no apparent solution in
 sight. I have a Dell desktop with a Radeon HD 5670 video card :
 lspci|grep VGA
 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
 [AMD/ATI] Redwood XT [Radeon HD 5670/5690/5730]
 
 I installed the amd catalyst via the file:
 amd-catalyst-13.12-linux-x86.x86_64.run.

Catalyst driver mostly does not support Fedora, and more often than not
it just doesn't work. Uninstall it, and use the default open-source
radeon driver (see below).

 my xorg.conf file shows this:
 ection Device
 Identifier  aticonfig-Device[0]-0
 Driver  fglrx

You want the Driver option to be radeon. Or better yet, rename/remove
your xorg.conf file and let X configure itself automatically.

rant
ATI is known to have a notoriously lousy support for Linux in general
and Fedora in particular. For their low-end and oldish cards,
they provide specs on which the Linux community has built the
open-source radeon driver (which works well). For their high-end cards,
they refuse to provide specs (so no open-source driver), while their
closed-source catalyst (fglrx) driver is a miserable POS that is almost
never up-to-date with the latest kernel and X.

In contrast, nVidia does not give away the specs for their cards, but
their closed-source driver simply Just Works(tm). Also, recently nVidia
folks decided to provide some (limited) specs to the open-source nouveau
devs, so there seems to be some light at the end of that tunnel... ;-)
/rant

IOW, forget catalyst and use the radeon driver. And if radeon driver
doesn't work for your card, you are out of luck.

HTH, :-)
Marko



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Re: Most Efficient Network File sharing protocol?

2014-03-04 Thread Marko Vojinovic
On Tue, 4 Mar 2014 11:48:47 -0300
Fernando Cassia fcas...@gmail.com wrote:
 I'm asking the samba devs right now to learn something in the process
 (current status of NETBEUI support in Samba 4.x), and to lower your
 anxiety. ;)

So? What did the samba devs say? Did they even bother to answer the
question?

Best, :-)
Marko

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Re: Most Efficient Network File sharing protocol?

2014-03-03 Thread Marko Vojinovic
On Mon, 3 Mar 2014 20:58:36 -0600
Dan Mossor dan.mos...@outlook.com wrote:
 When the DVD is built, I pull the updates across the local network to
 my machine and build the DVD there. These 4GiB transfers sometimes
 take close to 3 to 4 hours using NFS, and it is a Gigabit network.
 rsync appeared to be a bit faster, but my goal is to find the most
 efficient transfer method to move lots of little -and some big -
 files across a local network.

On a gigabit network 4GiB of data should optimally be transferred for
cca 40 seconds. That said, this can drastically deteriorate if you are
transferring lots of little files individually.

The simplest way is to use tar to collect the data in one file on the
source machine, transfer the single tar file over the network, and
unpack it on the destination machine. If you do it this way, it should
really not matter much which transfer protocol you are using. NFS,
samba, ftp, scp, rsync, even http --- they should all give you roughly
the same (fast) performance. If they don't, there is probably something
very wrong with your gigabit LAN. :-)

Tar itself uses only as much time as required to read/write 4GiB of
data on the local hard drive. This should typically not take too long,
and can be further optimized by using different drives for source/dest,
having SSD hardware etc.

In my experience, tar of 4GiB plus 1Gbit transfer plus untar should not
take more than 5-10 minutes total.

HTH, :-)
Marko






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Re: why would using sftp require disabling vsftpd?

2014-02-07 Thread Marko Vojinovic
On Fri, 07 Feb 2014 08:30:26 +0100
poma pomidorabelis...@gmail.com wrote:

 On 07.02.2014 02:04, Marko Vojinovic wrote:
  On Fri, 07 Feb 2014 01:14:05 +0100
  poma pomidorabelis...@gmail.com wrote:
 
  Secure File Transfer Protocol
  /etc/ssh/sshd_config
  Subsystem  sftp/usr/libexec/openssh/sftp-server
 
  man 5 sshd_config
  man 8 sftp-server
  man 1 sftp
 
  5+8+1=13!
  
  Sorry, I failed to understand what you meant with this last bit
  about sum to 13. Care to elaborate, please?
 
 :)
 Thanks for asking!
 Actually with that phrase I stress somewhat of a misnomer for the
 program - sftp.
 Some kind of comparison would be, if something like a web browser gets
 the name as http.

Maybe I'm just dense today...

I understood your answer to the OP regarding the difference between
protocols, clients and stuff. What I didn't understand was the
connection of all that to the statement

  5+8+1=13!

I mean, given that 5+8+1=14, am I missing some non-obvious humor here?
I really don't get it...

Best, :-)
Marko


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Re: why would using sftp require disabling vsftpd?

2014-02-06 Thread Marko Vojinovic
On Fri, 07 Feb 2014 01:14:05 +0100
poma pomidorabelis...@gmail.com wrote:
 
 Secure File Transfer Protocol
 /etc/ssh/sshd_config
 Subsystem sftp/usr/libexec/openssh/sftp-server
 
 man 5 sshd_config
 man 8 sftp-server
 man 1 sftp
 
 5+8+1=13!

Sorry, I failed to understand what you meant with this last bit about
sum to 13. Care to elaborate, please?

Best, :-)
Marko

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Re: somewhat OT: convert powerpoint presentation to Beamer/LaTeX on F20

2014-01-22 Thread Marko Vojinovic
On Wed, 22 Jan 2014 08:58:19 -0600
Ranjan Maitra maitra.mbox.igno...@inbox.com wrote:
 I am using F20, all updated, but not completely sure this is
 relevant. I have vast pages of Powerpoint presentations given to me by
 colleagues. I of course don't like using them as is (LibreOffice seems
 to be having trouble with Math generated by PPT for these slides). I
 wonder if there is some easy way to convert these slides to LaTeX. I
 have no problems touching them in beamer after a potential
 conversion. I just don't have the time to type 500 pages up in beamer.

Not to discourage you, but I find it unlikely that such a tool even
exists, since the feature sets of TeX and PowerPoint are quite
incompatible.

Your best bet is to somehow export .ppt into a Word document (basically
only text, pictures and equations --- no animations, no customized
fonts, etc.). After that you might get away with using some tools on
the lines of word2tex --- I know they exist, at least for Windows,
because I've used one of them (waaay back in the day); they allow for
some basic rudimentary conversion, and *might* get the job done, but
don't count on any fancy stuff.

Note that all this is going to be painful to the quality of the output,
because this translation is not always 100% correct. And don't even
begin to think about tables, pictures, markup of the text, etc. What
you'll get is a TeX-processable output, but it will basically be one
very big mess.

The amount of work involved in sorting out that mess (to produce a
reasonably sane output) is comparable to the amount of work needed to
retype the whole thing in TeX manually from scratch. You need to
evaluate the uniformity of .ppt input and the desired level of quality
of .tex output before you even begin of thinking of something like
automated conversion.

That said, there is also a cheapdirty trick that I once used --- you
can export all slides of the .ppt into pictures (.jpg or such, one
picture per slide), and then construct a .tex which will just put each
picture on a separate page. But I am not sure that this is what you
want to achieve here. I mean, you could also export .ppt to .pdf
directly, and not bother with .tex at all.

Anyway, good luck with the conversion, and if you manage to find some
tool that does what you want reasonably well, be sure to report it here
on the list, I'd really like to know about it!

HTH, :-)
Marko

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Re: Root Frustrations

2014-01-14 Thread Marko Vojinovic
On Mon, 13 Jan 2014 23:25:59 -0700
mike m...@azdwiggins.com wrote:
 I have come to the conclusion that the powers that be have finally 
 totally prevented root from logging into a graphic environment.
 Before the deluge of why root should not log in, I have some reasons
 that deal with the way I remote in from on the road (which is a lot).
[snip]
 Any ideas?

What would be wrong with the usual method? Meaning, log in as an
ordinary user, and elevate privileges using su - in a terminal and
providing root password in a GUI when asked for it?

I also remote login to my servers all the time, but I've never ever
needed to do it as root. What makes it so unavoidable for you?

HTH, :-)
Marko

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Re: F20 - Unintended consequences of no default MTA - How best to fix

2014-01-06 Thread Marko Vojinovic
On Mon, 06 Jan 2014 19:09:00 +0100
Ralf Corsepius rc040...@freenet.de wrote:

 On 01/05/2014 02:27 AM, Chris Murphy wrote:
 
  On Jan 4, 2014, at 6:12 PM, Marko Vojinovic vvma...@gmail.com
  wrote:
 
  But since we are bashing around about unnecessary default
  services, one set of services that I would actually like to see
  removed is the NFS stack (nfs, nfslock, portmap, ...). Arguably, a
  typical desktop OS with a GUI has absolutely no need of networked
  file systems, especially as obsolete as NFS. I've used Fedora for
  as long as it exists, and I've never seen anyone actually use NFS
  in real life scenarios on a typical desktop machine with a GUI.
  That's also got to be in the 99% of cases…
 
 This only means your usage scenarios are very limited. Actually, all
 my Linux systems have been using nfs ever since Linux supports it and
 ever since I am running/administrating networks.

Ralf, apparently you missed the context here. :-) I was applying Chris'
logic to something that is not an mta.

And to apply it further, I could argue that Fedora, being a typical
desktop OS with a GUI, does not target network administrators as a
default audience. When people complained about the absence of mta in
the default install, Chris answers just do a yum install
your-favorite-mta and be happy. So an analogous answer to you would be
just yum install the-nfs-stack and be happy.

The point of my comment was to demonstrate that removing the mta is as
absurd as removing the nfs, sshd, or whatever other service. Devs
should not drop stuff out of the default install only on the basis of
some imaginary target audience. There will always be a target group of
people who rely on precisely that piece of functionality, and are used
to the fact that it is installed by default. The issues raised about
mta, nfs, sshd, etc. are only examples of this.

Your response wrt. nfs actually proves my point: unless there is an
obvious functionality benefit, don't break people's habits --- keep the
default as it was.

Best, :-)
Marko


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Re: F20 - Unintended consequences of no default MTA - How best to fix

2014-01-04 Thread Marko Vojinovic
On Sat, 4 Jan 2014 13:45:34 -0700
Chris Murphy li...@colorremedies.com wrote:
 
 Restricting the context to just Fedora, by default it is a desktop OS
 with a GUI. That's the default install from live desktop, DVD ISO,
 and netinst media. That is the primary Fedora deliverable and
 experience.

By that logic, you could argue that Fedora should not have sshd
installed by default. A typical desktop OS with a GUI is  typically
never being accessed remotely, for the vast 99% majority of cases.

And yet somehow I doubt that anyone will dare to remove sshd from the
default install.

But since we are bashing around about unnecessary default services, one
set of services that I would actually like to see removed is the NFS
stack (nfs, nfslock, portmap, ...). Arguably, a typical desktop OS with
a GUI has absolutely no need of networked file systems, especially as
obsolete as NFS. I've used Fedora for as long as it exists, and I've
never seen anyone actually use NFS in real life scenarios on a typical
desktop machine with a GUI. That's also got to be in the 99% of cases...

Best, :-)
Marko

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Re: fedup experience for upgrading fedora 19 to fedora 20

2014-01-04 Thread Marko Vojinovic
On Sat, 04 Jan 2014 21:09:56 +0100
Rafnews raf.n...@gmail.com wrote:
 
 i replace the rhgb quiet by nomodeset and all the booting steps were 
 displayed.
 and the virtual machine shutdown automatically :(
 
 the second time i changed the rhgb quiet by nomodeset i got the 
 following error message: http://prntscr.com/2gip8o

Getting stuck at wait for phymouth boot screen to quit is symptomatic
of X failing to start. If you are trying to run Gnome3, it needs 3D
graphics support, which is always iffy in virtual machines. GDM is also
known for not quite shining in reliability...

Boot into init 3 (add 3 to the kernel line at boot), and see if you can
get successfully into the text console. Then take a look
at /var/log/Xorg.0.log to see what happened in the last attempt to
start X.

It might be the wrong video drivers, presence of experimental 3D support
inside a virtual machine, or lack thereof, etc. Play with video
hardware settings of the guest system, force X to use vesa driver,
configure a non-Gnome3 DE and DM, etc.

HTH, :-)
Marko

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Re: NetworkManager

2014-01-03 Thread Marko Vojinovic
On Sat, 04 Jan 2014 01:37:18 +0100
Timothy Murphy gayle...@alice.it wrote:

 Ed Greshko wrote:
 
  The items there reflect what is in the GUI configuration.
 
 Where is the GUI configuration?

Just to help out Ed's explanation --- you seem to be confusing the GUI
for the NetworkManager and the GUI for the configuration of the GUI of
NM.

The GUI with four arrows is supposed to configure how the NM GUI will
look like. It is *not* supposed to display any actual data about network
connections. It is just there to help you design what type of
information you want to see in the NM GUI and in what order. The
left/right arrows change the choice of items displayed by the NM GUI,
and the up/down arrows change the order in which they are displayed.

Btw, this type of user-interface dates back to KDE 3, and I am very
surprised that you haven't seen it before.

As for the NM GUI itself (the thing that pops up in the corner when you
click on the NM icon in the systray), it displays the data about actual
connections, access points, etc., in the order you have designed with
the four-arrow GUI.

You should understand the words GUI configuration as configuration
of the GUI, rather than graphical configuration.

HTH, :-)
Marko








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Re: gnome 3 vs kde

2014-01-03 Thread Marko Vojinovic
On Fri, 03 Jan 2014 21:16:00 -0500
William Biggs williambigg...@gmail.com wrote:

 I would like to know witch one would you use and why gnome 3 or kde ?

And I would like to know which one would you eat and why ---
chocolate or strawberry?

:-)
Marko

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Re: akmod isn't reliable

2014-01-02 Thread Marko Vojinovic
On Thu, 2 Jan 2014 21:48:32 +
Powell, Michael michael_pow...@mentor.com wrote:

 I guess this is more of a general question, but sometimes after
 updating the kernel or nvidia drivers an akmod isn't regenerated and
 my system will begin to boot, fedora logo will show, but eventually
 it will dump to the systemd log of services being started and just
 sit there. I have all the required dependencies before the update
 because I can simply reboot to runlevel 1 or if I have an older
 kernel boot it and then manually `akmods --kernels`.
 
 So the question is... why isn't regeneration of the akmod reliable?

I think it is reliable, you just need to wait it out. The rebuilding of
akmod is being done for a given kernel while that kernel is running, so
when you update the kernel, the akmod doesn't get built until you boot
into it. And when you boot into it, systemd will at some point try to
activate the akmod, find out that it doesn't exist, fail, and initiate
a rebuild.

The rebuild takes some minutes to complete, after which it will write
out something like:

Please wait, this may take some time...
Done.

// I never figured why the first line isn't written *before* the
build starts, but only after it finished, when it is completely
useless... //

Once the modules have been rebuilt, the boot will continue. Subsequent
boots (for that kernel) will not require a rebuild and will be
regularly short.

HTH, :-)
Marko



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Re: dual boot test

2013-12-27 Thread Marko Vojinovic
On Fri, 27 Dec 2013 19:49:42 -0500
bruce badoug...@gmail.com wrote:
 My approach is to have a 2nd minimal system/OS that has the only
 function to invoke a complete/fresh netinstall to restore/refresh the
 OS on the 1st system.

How exactly (step by step, please) do you intend to invoke the
netinstall from the installed minimal system? 

Best, :-)
Marko

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Re: fedup and selinux

2013-12-24 Thread Marko Vojinovic
On Tue, 24 Dec 2013 09:48:38 -0800
Rick Stevens ri...@alldigital.com wrote:
 I've said this before and I'll say it again...permissive mode does NOT
 allow ALL access (permissive != disabled, despite what others may
 say). If you see selinux deny messages, it's still being denied. I've
 seen this bite people a number of times.

Care to give a F18/19/20-working example of this?

IOW, provide a sequence of steps on a clean Fedora install that works
with selinux disabled, while it fails with selinux in permissive mode?

Best, :-)
Marko

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Re: Any way to disable selinux when updating to F20

2013-12-22 Thread Marko Vojinovic
On Sun, 22 Dec 2013 09:55:20 -0500
Sam Varshavchik mr...@courier-mta.com wrote:
 I have selinux turned off, I don't need it. The update script is
 turning it on, and relabeling everything. I'm just going to turn it
 off again, when the update finishes.
 
 Is there any way to avoid wasting all this time.

The relabeling during the update is being done because you kept selinux
turned off on your old installation. Since F20 turns selinux on by
default, it requires a relabeling of the filesystem.

The way to avoid this is to keep selinux in permissive mode, as opposed
to disabled. That way labels will be kept updated throughout the life
of the release, and the filesystem will not need to be relabeled
(hopefully) when you decide to upgrade from F20 to F21, in the future.

 And what's with those error messages.

Don't know that one...

HTH, :-)
Marko

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Re: Writing English.

2013-11-22 Thread Marko Vojinovic
On Sat, 23 Nov 2013 09:54:39 +1300
Rolf Turner r.tur...@auckland.ac.nz wrote:
 
 Why can't computer geeks learn to write English correctly?

  http://xkcd.com/1238/

HTH, :-)
Marko

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Re: Best (Fedora) way to capture/archive videos for LATER editing?

2013-11-07 Thread Marko Vojinovic
On Thu, 7 Nov 2013 14:22:58 +0100
M. Fioretti mfiore...@nexaima.net wrote:

 What Fedora-compatible video capture hardware should I buy to hook VHS
 players, Firewire camcorders... to my computer?

For VHS, you want to get a TV card. Lookup video4linux documentation
(usually called v4l) to find out what chipsets are supported by the
Linux kernel --- before you buy the hardware. Also, in case of TV cards,
hardware quality is usually proportional to its price.

Another thing that I can recommend is to ask someone else to do it for
you --- there are professional/commercial mini-studios that can convert
your VHS to some digital format (usually to DVD), for a small price.
Typically they own the hardware do it with better quality than you could
do it yourself.

As for firewire, AFAIK this already comes in a digital format. This
means that the capture software and hardware do not need to do
analog-to-digital conversion, the data already comes in digital. In
addition to the recording/capture software, you just need a camcorder
to playback the tape through the firewire, and you need to have a
firewire port in your computer. If you don't have one, any firewire PCI
card will do the job.

Depending on your camcorder, the firewire data may come in the raw,
uncompressed DV format. You want to have *a* *lot* of hard disk space
for that. I vaguely remember needing tens of GB per hour of
tape. After you have the file on your hard drive, you can transcode it
to some format of reasonable size, and play around with various
compression levels, quality settings, etc.

 what tools do you recommend (command-line stuff is OK) for grabbing
 the video from that hardware, transcoding and saving to disk only
 specified parts automatically (meaning connect the VHS player, then
 tell Fedora save by yourself only the first 5:30 minutes, then from
 minute 40:20 to 43:10, of the incoming video)

I know that mplayer/mencoder can do this, if you are not afraid of
reading the mammoth man page and finding the relevant command-line
options. :-) However, my usual recommendation is --- grab the whole
tape to a file first, and then cut out unneeded pieces from the digital
version. You'll have far greater control of the positions of the cuts
than you would have if you would capture time-based pieces. That
way you'll also avoid potential A/V sync issues, etc...

HTH, :-)
Marko



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Re: Kernel 3.11 and Fedora 19...

2013-09-07 Thread Marko Vojinovic
On Sat, 7 Sep 2013 09:20:29 -0300
Fernando Cassia fcas...@gmail.com wrote:

 On Sat, Sep 7, 2013 at 9:16 AM, Heinz Diehl h...@fritha.org wrote:
 
  I'm not aware of such a feature added to 3.11. In case you mean
  bcache: it works as a block layer cache (similar to dm-cache),
  which allows to use a solid state drive to work as a cache for a
  rotational harddisk on the same system.
 
 Exactly, thats the one and came with 3.10... versions move too fast I
 ended up mixing up them.
 
 http://kernelnewbies.org/Linux_3.10#head-a0ad787f2e030b53bdabbb4b6e22e7ed16803bb1

Note though, that this feature will not minimize the writes to the SSD.
Quite the opposite, it will use SSD as a caching mechanism for slower
HDDs --- it will tend to *maximize* writes to SSD in order to minimize
the usage of HDDs, and thereby increase performance. Of course, at the
cost of wearing out SSDs sooner rather than later.

So if you want to maximize the life of your SSD, you want to make sure
that this feature is turned OFF.

Btw, what is the default for this option in Fedora, on or off? If the
default is on, how to turn it off in the cleanest possible way?

HTH, :-)
Marko


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Re: Turning off SELINUX

2013-09-06 Thread Marko Vojinovic
On Fri, 6 Sep 2013 17:58:03 +0200
Heinz Diehl h...@fritha.org wrote:
 On 06.09.2013, Javier Perez wrote: 
 
  My beef is given the NSA origin of this software, It could very
  well have a backdoor to turn itself off under the appropriate
  circumstances like an NSA-sponsored breach an allow unrestricted
  access to my system..
 
 Every person contributing to free open source software could do
 that. You're talking about the NSA: they could easily pay
 somebody to do that for them. Everybody with a lot of money could do
 the same. If that's your concern, you can never ever be
 shure, unless you have reviewed all of the sourcecode running on your
 machine by yourself, and recompiled the software using this source
 afterwards.

That's not enough, because the compiler may be rigged to reintroduce
backdoors straight into binaries. You need to check the compiler source
code, and then bootstrap it from a simpler compiler that you have wrote
yourself in machine code (and I mean machine code, not the assembly
language).

However, this also isn't good enough, since the bios, CPU (firmware and
hardware in general) might have an undocumented set of instructions
that can remotely trigger total control over the machine. It's quite
simple, actually --- NSA pays some money to rig Intel, AMD, ARM and PPC
architectures in this way, and they can access anything remotely.

So in order to go around that, you need to build a computer yourself
from scratch, in particular the CPU. After bootstraping Linux on that
hardware (LFS distro comes to mind...), you're safe against the NSA.

As for the tinfoil hat, it needs two layers --- the inside layer needs
to be orientend shiny-side in, which would prevent the NSA from spying
on your brain waves. But the outside layer needs to be oriented
shiny-side out, to prevent the NSA from feeding your brain with
undesired signals. The two layers need to be well insulated against
each other --- it's obvious that a short-circuit between them will
leave you completely vulnerable...

HTH, :-)
Marko

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Re: Video is slow

2013-08-26 Thread Marko Vojinovic
On Sun, 25 Aug 2013 22:12:34 -0700
Joe Zeff j...@zeff.us wrote:
 On 08/25/2013 09:21 PM, Marko Vojinovic wrote:
  While I respect Joe Zeff as a reputable member of this list, those
  instructions on fedoraforum are a total piece of crap. I don't know
  who wrote those instructions, but overengineering a solution for a
  common problem is a always a Recipe For Disaster(tm).
 
 Don't forget that some of them were written for newcomers who may or
 may not know if their card's even supported.  Once you have rpmfusion
 set up, all you really need to do is have yum install kmod-nvidia,
 the xorg files that it needs, run dracut and reboot.  (Using akmod,
 of course, gives you a slightly different set of files.)  Most of the
 complexity comes from the author having to take all sorts of
 possibilities into account; as a user, you just pick the set of
 instructions that matches you card.  I've never yet had them fail,
 but I have read posts on that forum where others have; usually,
 they've either picked the wrong set of files to install or didn't
 follow the instructions correctly.  YMMV, and obviously does, but
 everything I've seen, both personally and through threads on
 fedoraforum lead me to believe that they're about as good a set of
 instructions as you're likely to find.
 
 BTW, Marco, do you have a link to a set of instructions you find
 better? If so, I'd be interested in looking at them and possibly
 pointing others to them instead in the future.

I don't have a link to point you to, aside from my first answer to
Roger above (that link can be found in the list archives).

But it literally boils down to three steps:

(1) activate rpmfusion,
(2) yum install kmod-nvidia,
(3) reboot the machine.

Feel free to substitute akmod in place of kmod if you wish.

With those in mind, if you want to write down an instruction manual, I
can say only this:

* Give the user a link to rpmfusion website, and let him figure out how
  to activate it, if he didn't already. Giving him some ugly rpm
  --nogpgcheck install http://blabla stuff is a bad idea on several
  grounds, but most importantly the rpmfusion website is the
  authoritative reference on how to activate it, and there is no need
  to reinvent instructions that already exist.

* The yum installation of (a)kmod-nvidia will pull in any dependencies
  it needs, including xorg libs, -header and -devel packages, even gcc
  if necessary. There is no need to specify any of those manually.

* The nouveau is being disabled and dracut is being run as part of the
  post-install scripts for kmod-nvidia. Neither of those should be done
  manually. Especially not by a newbie.

* Any of the remaining stuff about PAE kernels, selinux policies, grub
  tweaking and manually blacklisting nouveau should be frown upon. Not
  only that those things are not necessary for the installation of the
  driver, but moreover they can be downright dangerous if handled by
  a newbie.

There is one more thing regarding the dracut stuff --- aside from the
fact that it is completely unnecessary since kmod-nvidia will already
do it by itself, doing it like this:

mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname
-r)-nouveau.img
dracut /boot/initramfs-$(uname -r).img $(uname -r)

literally means asking for trouble. The mv command is almost
instantaneous, while the dracut command will take a good several
minutes to complete. In that sense, during the period after you have
renamed a valid initramfs file to some name that grub will not know to
look for, and before dracut has completed the new file, you do not have
a bootable machine, since there is no initramfs file for grub to
fallback on if something goes wrong. What will happen if a power surge
shuts down your computer in the middle of dracut run? Doing a mv before
dracut is a recipe to paint yourself into a corner.

What should be done instead is to first invoke dracut with a different
file name:

dracut /boot/mynewramfs-$(uname -r).img $(uname -r)

so that you don't touch the original file while this is being done.
Then, you want to *copy* the current initramfs into a backup:

cp /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r)-nouveau.img

Finally, you want to move the new file into the place of the old one:

mv /boot/mynewramfs-$(uname -r).img /boot/initramfs-$(uname -r)

Since the file already exists, and since the root alias for mv is
interactive, it will ask you do you really want to overwrite the old
file. Answering yes will be fast, painless and a proof that you didn't
make any typos in the above commands.

During the whole procedure, if the machine loses power, it has a valid
initramfs file to fallback on automatically.

Again, all that said, yum install kmod-nvidia will will do all that
automatically, and there is really no reason to invoke dracut manually
in the first place. You just risk to fsck up something, like it just
happened to Roger.

HTH, :-)
Marko





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Re: Video is slow

2013-08-25 Thread Marko Vojinovic
On Sun, 25 Aug 2013 20:57:03 +1000
Roger are...@bigpond.com wrote:
 I'm using Fedora 19 with the standard Nouveau video driver.
 I've noticed that when re positioning gui windows with mouse,
 movement is increasingly glunky, jerking in 5-10mm steps in any
 direction. When dragging a border of a gui window the mouse moves to
 almost 100 mm before edge of the window moves.
 
 Have a 2 gig Geforce GT8600 video card which is very goo d at 3d
 Blender stuff.
 
 I swapped over to Ubuntu 13.04  which uses the Nvidia driver and
 there is no problem at all
 
 Is there any fix for the Fedora 19 Nouveau jerky movement?

The Nouveau driver performance is slow and jerky because the nVidia
hardware is still being reverse-engineered and the driver is still
under heavy development. You can take a look here

  http://nouveau.freedesktop.org/wiki/FeatureMatrix/

to get an idea.

If you don't insist on using Nouveau under Fedora, you can use the
nVidia closed-source drivers just like in Ubuntu. The procedure is this:

(1) install the rpmfusion repo [1] (if you haven't already),

(2) do a yum install kmod-nvidia (it might take a while to finish
because rebuilding the initrd is heavy, be patient with it),

(3) reboot the machine.

After that the nVidia driver should be active and everything
graphics-related should be very smooth and silky... :-)

HTH, :-)
Marko

[1] http://rpmfusion.org/

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Re: Another amusing bug

2013-08-25 Thread Marko Vojinovic
On Sun, 25 Aug 2013 22:43 +0100
Martin Airs mar...@airs.me.uk wrote:
 On Sunday 25 Aug 2013 13:20:05 Tom Horsley wrote:
  Meanwhile, I still can't find out what the heck the
  mei module is actually good for.
 
 http://www.mjmwired.net/kernel/Documentation/misc-devices/mei/
 
 Some examples of Intel AMT usage are:
[snip list of technobabble]
 that might tell us something useful, tho quite what I'm not sure

As far as I understood, it is all about being able to control/adjust the
machine's bios remotely.

Most probably it is designed to work through ethernet or modem or
whatever. It apparently features an internal-to-bios database with all
sorts of stuff that can be configured or set up from within the bios
screen itself, and in addition the access rights and security policies
for remote access. And probably more.

I can imagine this technology being useful if the OS would fail to boot
and you do not have physical access to the box. Or it may be convenient
for setting up headless machines, should you need to access their bios
and don't have a keyboard and monitor at hand.

As for the kernel module, my guess is that it probably provides a way to
access this bios-database from withih Linux, and provide a handle for
the user to read or modify it.

HTH, :-)
Marko

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Re: Video is slow

2013-08-25 Thread Marko Vojinovic
On Sun, 25 Aug 2013 17:09:39 -0700
Joe Zeff j...@zeff.us wrote:
 On 08/25/2013 04:48 PM, Roger wrote:
  Took the plunge and following the above installed kmod-nvidia now
  Fedora boot hangs at  Started Accounts Service
  I also note that it fails to start ISDN service?
  Pretty much dead and can't access anything.

How long did you wait to establish that it hanged?

The following scenario can happen --- you install kmod-nvidia while
running under an older kernel; the kmod installs correctly, but builds
the initrd for the currently-running (ie. old) kernel. Then you reboot
into the latest, *new* kernel --- for that kernel initrd has not been
built by the kmod, and therefore the build kicks in automatically
during the boot process. As the building of initrd takes a while, it
appears to you that the system hung during boot. This thing happened to
me on one occasion --- I was very pissed off that the kmod broke the
machine, and kept restarting it in the hope to get it back somehow.
Needless to say, all those attempts failed, until it dawned on me...

The solution is to boot the machine, and just wait it out. :-)

Give it 10-15 minutes, the initrd is a large file. ;-) You will need to
wait for it only on this first boot --- once it is updated, subsequent
boots should be as fast as they used to be.

Of course, I might be wrong, but give it a shot before you start
digging in runlevel 1... ;-)

 Second, just installing kmod-nvidia isn't quite enough; you also need
 to install xorg-drv-nvidia.lib.

This shouldn't be necessary, kmod-nvidia should have pulled in all
dependencies needed. I never needed to install anything extra. Not
since F14 at least (I don't remember further back, wasn't using nVidia
regularly back in the days...).

 Note that it also gives instructions for installing akmod-nvidia,
 which will rebuild the kmod whenever there's a kernel update.
 Personally, I have both installed.  That way, if the new kernel and
 kmod are both ready together, it gets done that way; if there's a
 delay on the kmod, akmod-nvidia will pick up the slack and build you
 one when you reboot into the new kernel.

This is good advice if you are fanatically waiting for the new kernel
to appear and install it within the first 5 minutes after hitting the
repositories... In that case it is unlikely that the corresponding
kmod-nvidia will be available, and akmod can kick in to save the day.
But if you are updating Fedora once a week or so, chances that you get
into that gray area where kernel is available while kmod still isn't,
are very small. It hasn't happened to me in years.

But if you want to be on the safe side, feel free to install also the
akmod-nvidia.

HTH, :-)
Marko


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Re: Video is slow

2013-08-25 Thread Marko Vojinovic
On Mon, 26 Aug 2013 04:19:35 +0100
Marko Vojinovic vvma...@gmail.com wrote:
 
 Give it 10-15 minutes, the initrd is a large file. ;-) You will need
 to wait for it only on this first boot --- once it is updated,
 subsequent boots should be as fast as they used to be.

By the way...

I always found it quite annoying --- whenever the kmod-nvidia gets
updated, during the initrd rebuilding there is absolutely no info on
what is being done. After it finishes, it writes the following:

   Please wait, this may take some time...
   Done.

What I would expect is for the first sentence to appear *before* it
starts the rebuild, and the word done *after* it finishes. As it
happens now, both are written after the build, defeating the whole
purpose of the messages.

So while it works, the user is confused and worries about what is taking
so long, and after it finishes it conveniently informs the user that
he was supposed to wait and not worry about it. :-@

I never took the time to file a bug report on this, but in the
situations like the OP is in, it could really be helpful to have this
fixed and working as it is supposed to.

Best, :-)
Marko

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Re: Video is slow

2013-08-25 Thread Marko Vojinovic
On Mon, 26 Aug 2013 13:22:57 +1000
Roger are...@bigpond.com wrote:
 I followed the instructions in : 
 http://forums.fedoraforum.org/showthread.php?t=204752
 but must have missed something because Fedora 19 is now trash.
 Will not even start to boot so I can't get to a terminal.

While I respect Joe Zeff as a reputable member of this list, those
instructions on fedoraforum are a total piece of crap. I don't know who
wrote those instructions, but overengineering a solution for a common
problem is a always a Recipe For Disaster(tm).

Now nobody knows what you did, in how many ways were those instructions
broken, and how much time and effort will it take to fix that
mess... :-(

 Unless I can get into things from Ubuntu, and I have no idea how to
 do that,  it will probably mean a  fresh install.
 
 I had forgotten the difficulty and complexity of installing nvidia,
 it certainly brings back memories, I think the reason I decided  to
 use Nouveau was because I was using Fedora as a test bed and updating
 with new releases.

Installing nvidia drivers is as simple as I have told you --- enable
rpmfusion, yum install kmod-nvidia, reboot the machine. There is
absolutely no reason for any of those to fail (unless in some very weird
situations). All other steps in that solution on fedoraforum are
either redundant, or downright wrong, or both...

Just look at this mess:

quote
su
yum update kernel\* selinux-policy\*
reboot
end quote

WTF??!! What does updating selinux-policy have to do with installing
nvidia drivers?

quote
su
yum install kernel-PAE-devel
end quote

AFAIK, since some time now all i686 kernels are PAE.

quote
su
yum --nogpgcheck install
http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
yum install akmod-nvidia xorg-x11-drv-nvidia-libs.i686
end quote

Come on, i686? Really?? And what if the user runs a 64bit arch?
Besides, akmod-nvidia will pull in the xorg package as a dependency, no
need to ask for it explicitly.

quote
su
mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname
-r)-nouveau.img
dracut /boot/initramfs-$(uname -r).img $(uname -r)
end quote

And now this --- after it has been already automatically done by the
installation of (a)kmod-nvidia, do it again manually, just for good
measure, right?

There are even further instructions to edit grub.cfg, change the
selinux policy, blacklist nouveau and beat it to death three times
over... I don't even dare to look further down! And all the while, the
guy repeats in red-colored large font: If you don't follow all three
steps, your install will fail!. He should have better said If you *do*
follow all these steps :-@

Maybe some of these steps made sense back in the days of F14. But
today, it cannot be even called obsolete, it is just a big pile of
crap, lousy advice and FUD!

HTH.
Marko

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Re: Another amusing bug

2013-08-25 Thread Marko Vojinovic
On Sun, 25 Aug 2013 23:28:37 -0500
g gel...@bellsouth.net wrote:
 nsa = notoriety seeking admins.
note send admins.
new sex acquired.

NSA = No Such Agency.

But my pet is this one:

WE ARE THE NSA OF BORG. LOWER YOUR FIREWALLS AND SURRENDER
YOUR DISKS. WE WILL ASSIMILATE YOUR SOFTWARE AND HARDWARE
DISTINCTIVENESS. YOUR PROCESSORS WILL BE ADAPTED TO SERVE OUR
OWN. RESISTANCE IS FUTILE.

Best, :-)
Marko


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Re: Video is slow

2013-08-25 Thread Marko Vojinovic
On Mon, 26 Aug 2013 14:34:56 +1000
Roger are...@bigpond.com wrote:

 Installing nvidia drivers is as simple as I have told you --- enable 
 rpmfusion, yum install kmod-nvidia, reboot the machine.
 rpmfusion was enabled and working
 yum install kmod-nvidia did it's thing successfully
 
 --- Except it did not work,  wouldn't go past that error message 
 previously mentioned..

Those messages had nothing to do with the nvidia driver. The systemd is
activating services in parallel, and those messages might have been
there only because they happened to be put on screen roughly at the
same time the dracut started rebuilding the initrd. As I said, most
probably you should have just waited for it to finish and continue
booting. But now it doesn't really matter...

Best, :-)
Marko

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Re: AMD

2013-08-19 Thread Marko Vojinovic
On Sun, 18 Aug 2013 22:07:46 -0700
Richard Vickery richard.vicker...@gmail.com wrote:
 
 In considering a new computer, one of those under consideration is an
 AMD chip with Windoze; the salesman suggested that other customers
 have said that Linux has issues with AMD. Do we have issues with this
 chip? Since I haven't read anything at least in a long time I have the
 opinion that it has been solved. Am I wrong? I ended up saving my
 money because of his concern.

The usual advice always applies --- download and burn a LiveCD image
of your favorite version of Fedora, boot the computer from that, and
test if everything works as you expect it to. After that you can decide
if you want to buy it or not.

HTH, :-)
Marko

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Re: Canadian Spell Check English (Canadian) language

2013-08-18 Thread Marko Vojinovic
On Sun, 18 Aug 2013 09:12:36 -0600
Peter Gueckel pguec...@gmail.com wrote:
 
 What are Canadian spellings?
 
 Mostly, we use British, as in -our in colour, -ou as in moustache, -
 oeu as in manoeuvre, -re as in centre and we follow the rule about 
 doubling the last consonant of a word that ends in a vowel followed 
 by a consonant when adding a suffix that begins with a vowel, such as 
 travelled and tunnelling. But do people use foetus, diarrhoea, 
 mediaeval and encyclopaedia? Not likely.
 
 There doesn't appear to be an official language policy and the 
 majority of computer users don't know how to set their word processor 
 programs to Canadian, or don't care. I have seen spellings that are 
 blatantly American in governmental communications and the Canadian 
 media.

   http://xkcd.com/1238/

Best, :-)
Marko


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Re: How a looney programmer spends a weekend :-).

2013-08-17 Thread Marko Vojinovic
On Sat, 17 Aug 2013 09:46:34 -0400
Tom Horsley horsley1...@gmail.com wrote:
 Chasing a mysterious bug:
 
 http://home.comcast.net/~tomhorsley/game/heisenbug.html

A lot of fun, as I can see! :-)

Reading through, as soon as you said that you are using mplayer in a
cron job I thought maybe he should set -vo null, but later I saw
that you have already figured that out. :-)

That said, I would say that this is not a bug in the Intel drivers, but 
in mplayer itself. Namely, in the mplayer man page one can find the
following comment for the -identify option:

Combine this with -frames 0 to suppress all video output.

Arguably, this combination of options should not require the DISPLAY to
be set. IOW, mplayer should treat -frames 0 as a special case. OTOH,
as complicated as mplayer already is, patching it for that special case
might not be worth the devs effort. Especially if -vo null works
around it.

Anyway, it's an interesting corner-case. :-)

Best, :-)
Marko


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Re: Problem with udev and ethX naming in latest Fedora 19.

2013-08-15 Thread Marko Vojinovic
On Thu, 15 Aug 2013 10:42:03 -0700
Ben Greear gree...@candelatech.com wrote:
 On 08/15/2013 08:14 AM, Reindl Harald wrote:
  Am 15.08.2013 16:53, schrieb Ben Greear:
  On 08/15/2013 07:18 AM, Reindl Harald wrote:
  Am 15.08.2013 16:05, schrieb Ben Greear:
 
  Yes, and I considered it, but I do not want my networks named
  like that.  I've been using ethX in my application and products
  for more than a decade, and do not want to change the naming
  scheme if at all possible.
[snip]
  I understand why the names come up jumbled on bootup, but there
  is no excuse for udev not being able to properly rename them as
  requested
 
  the kernel may also rename the devices as they come up
  if kernel want make one nic to eth1 and udev at the same time
  another one - collision
 
  That's fine.  Udev can just detect the collision and try again,
  potentially moving the other one to a new name.  That is what it
  has done for years, in between bugs that caused eth0.rename
  devices to be left lying around.
 
  well complain at the udev/systemd-guys and the ones before who came
  up with biosdevname you know that, i know that, you asked, i gave
  you an answer more can hardly do a *user* in this case
 
 I opened a bug against udev..will see if it gets any response.

Bugzilla link please?

Btw, I doubt that you'll be taken seriously enough. I can bet that the
devs are going to argue like this: if your software makes explicit
use of the eth# NIC naming, it is broken to begin with. Fix your
software, and that will remove the need for your complaint.

I remember seeing this argument before --- this was one of the reasons
why the biosdevname NIC names were designed as p#p# and em#, while
ignoring the traditional eth naming. I cannot find any of the links
now, but all discussions were basically like this:

User: Why this stupid p#p# numbering scheme? Couldn't you use eth#
instead?
Dev: There is no way to name the NIC's in a linear way, so eth#
names are unsuitable.
User: But can't you at least make aliases from p#p# to eth# in udev?
Dev: There is no way to do that uniquely either, so we won't do it.
User: But my firewall rules are all written up using eth# names, and
now they are broken!
Dev: If your firewall rules made explicit usage of eth#, they were
broken to begin with. You should fix the rules, rather than insist on
using eth#.
User: How come my firewall rules were broken to begin with? They worked!
Dev: They worked by accident, because you didn't happen to experience
any race conditions in naming the NIC's. But they were broken
nevertheless.

So I basically expect that you'll be told to fix your software, so
that it doesn't use eth# names. If it is important for your software
to know which NIC is which, use biosdevname and p#p# naming. And bug
will be closed WONTFIX. Sorry.

Best, :-)
Marko

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Re: Problem with Matrox MGA G200eW video driver.

2013-08-15 Thread Marko Vojinovic
On Thu, 15 Aug 2013 16:36:24 -0700
Ben Greear gree...@candelatech.com wrote:

 I have a fancy and quite new E5 processor server system that has a
 Matrox VGA port in it:
 
 e:04.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA
 G200eW WPCM450 (rev 0a)
 
 This appears to use the mgag200 kernel module.
 
 When this module is loaded, the Xorg log complains saying the module
 must be unloaded and I end up running 'llvmpipe' and performance is
 horrible.
 
 If I blacklist the module, it still runs in emulation mode and
 performance is horrible.
 
 Here is what I think is the interesting part for the black-list
 variant:
 
 [26.079] (II) Module vgahw: vendor=X.Org Foundation
 [26.079]compiled for 1.14.2, module version = 0.1.0
 [26.079]ABI class: X.Org Video Driver, version 14.1
 [26.079] (--) MGA(0): Chipset: mgag200 eW Nuvoton
 [26.079] (--) MGA(0): Linear framebuffer at 0xF900
 [26.079] (--) MGA(0): MMIO registers at 0xFB80
 [26.079] (--) MGA(0): Pseudo-DMA transfer window at 0xFB00
 [26.150] (II) MGA(0): Creating default Display subsection in
 Screen section Default Screen Section for depth/fbbpp 24/32
 [26.150] (==) MGA(0): Depth 24, (--) framebuffer bpp 32
 [26.150] (==) MGA(0): RGB weight 888
 [26.150] (**) MGA(0): Enabling KVM
 [26.150] (==) MGA(0): Using HW cursor
 [26.150] (**) MGA(0): Using Shadow Framebuffer - acceleration
 disabled [26.150] (--) MGA(0): Video BIOS info block at offset
 0x07D60 [26.150] (==) MGA(0): VideoRAM: 16320 kByte
 
 
 So, first question:  Should I be blacklisting the driver?
 
 And second, any idea on how to either get the acceleration working,
 or make gnome work OK w/out it?  I don't care at all about 3D affects,
 I just need basic desktop functionality to work w/out too much
 overhead.

While I know basically nothing about Matrox cards, the log line

[26.150] (**) MGA(0): Using Shadow Framebuffer - acceleration disabled

apparently says that acceleration was deliberately disabled in the
config file (i.e. somewhere inside /etc/X11/xorg.conf or inside
xorg.conf.d directory). This is the meaning of the (**).

Also, AFAIK Gnome3 requires accelerated graphics (at least it did last
time I checked). You may be better off trying Mate, XFCE, LXDE, KDE, or
some lightweight window manager without a full DE.

HTH, :-)
Marko

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Troubleshooting the network connection speed

2013-08-13 Thread Marko Vojinovic

Hi folks! :-)

Before I go complain to my ISP, I'd like to hear if anyone can give me
an idea what is going on with my networks... :-)

I have two machines, with following link properties:

 local --- 20Mbps/2Mbps (GSM wireless)
 remote --- 100Mbps/100Mbps (100Mbit LAN connected to optical uplink)

The remote machine is in another country, cca 2000 km away. It is
connected to a 10Gbit optical link, but only through a 100Mbps switch,
so that caps the bandwidth.

When transferring large files via wget from remote to local, the
maximum bandwidth that I get is 2Mbps. It *used to be* 20Mbps (couple
of days ago). Occasionally it drops down to 300Kbps (it just happened
as I write this), but after several minutes it gets back up to 2Mbps.

But it doesn't want to get back up to 20Mbps, which is the max download
throughput for the local machine.

To test the local link, I opened 15-20 random youtube links
simultaneously in Firefox. It easily capped the full 20Mbps, so the
local link apparently works as advertised.

Another test of the local link --- I went to

  http://fedoraproject.org/get-fedora

and clicked the big blue download now button, to download the Live
Desktop .iso --- the download manager in Firefox says it will complete
it in 17 hours, since it is downloading at 15 KBps (i.e. 150 Kbps).
This is of course ridiculously slow, for a 20Mbps link.

All speed numbers are consistently reported by jnettop, KDE network
widget, Firefox download manager and wget. If you suggest some other
tool to measure the throughput, I'll try it out too.

The remote machine appears to work ok --- I have downloaded and
uploaded (elsewhere) all sorts of things, and it consistently works at
100Mbps up/down. Downloaded Fedora DVD iso in a couple of minutes. I
can seed torrents from it at 100Mbps no problem (this is currently off
because I'm trying to pull something to the local machine).

So I believe something is wrong with my local link, but don't know
exactly what --- youtube works, but other things don't.

Any ideas how to troubleshoot this?

Also, any ideas what to tell to my ISP?

I could ask them to look into it, but they just might open a bunch of
youtube links, verify that the link works, and blame the remote machine.

Any suggestions appreciated.

TIA, :-)
Marko

P.S. Before anyone asks --- I *do* know the difference between bits and
bytes, Mbps and MBps, etc. I was careful to provide you with a
case-sensitive units, and I know what I'm talking about. :-)

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Re: Troubleshooting the network connection speed

2013-08-13 Thread Marko Vojinovic
On Tue, 13 Aug 2013 08:55:44 -0400
Fred Smith fre...@fcshome.stoneham.ma.us wrote:
 On Tue, Aug 13, 2013 at 01:09:09PM +0100, Marko Vojinovic wrote:
  
  Another test of the local link --- I went to
  
http://fedoraproject.org/get-fedora
  
  and clicked the big blue download now button, to download the Live
  Desktop .iso --- the download manager in Firefox says it will
  complete it in 17 hours, since it is downloading at 15 KBps (i.e.
  150 Kbps). This is of course ridiculously slow, for a 20Mbps link.
 
 I wouldn't necessarily trust the timing of this particular test. the 
 result would depend on what's between you and there, and how busy that
 server (farm???) is. If you try a bittorrent download, you might get
 better numbers because you're spreading out the load over several
 different source machines/networks.

Ok, I just started downloading Fedora 19 DVD iso via torrent, and
ktorrent reports the following:

download time: 5min
seeders/leechers: 78/2
download speed: oscillating around 20KBps (i.e. 200kbps, also confirmed
by jnettop)

Looking at the peer list, I see cca 15-20 active seeders, each sending
me on average 1KiBps. The strongest one gives me 3.64KiBps, and it
goes down from there. Time left for a 4GB iso is 3 days and 2
hours at this speed, estimated by ktorrent.

So torrent appears to be 10 times slower than wget, which is in turn 10
times slower that what should be my full bandwidth.

Please note that my full bandwidth *used to work* until several days
ago, when I started experiencing these large slowdowns.

Anyway, thanks for the suggestion! :-)

Best, :-)
Marko


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Re: Troubleshooting the network connection speed

2013-08-13 Thread Marko Vojinovic
On Tue, 13 Aug 2013 10:00:59 -0500
Dale Dellutri daledellu...@gmail.com wrote:
 On Tue, Aug 13, 2013 at 7:09 AM, Marko Vojinovic vvma...@gmail.com
 wrote:
 
  Before I go complain to my ISP, I'd like to hear if anyone can give
  me an idea what is going on with my networks... :-)
 
  I have two machines, with following link properties:
 
   local --- 20Mbps/2Mbps (GSM wireless)
   remote --- 100Mbps/100Mbps (100Mbit LAN connected to optical
  uplink)
 
 
 I assume that the local is connected to a cable service ISP.
 Cable service dpeeds are generally not guaranteed, and depend on other
 users on the same cable segment, whom you know nothing about.

This router uses a 4G mobile phone uplink --- it is wireless both
towards me (wlan) and towards the ISP (4G). There is no cable as such.
Somewhere in the nearby there is a telecommunications radio antenna
which provides coverage for my neighborhood --- for internet
connections, mobile phones, HDTV, and so on...

It is possible that some of that equipment might be broken, but I doubt
that it is working beyond its design capacity so badly that it cannot
provide me with my 20Mbps.

 Perhaps you would get better download speeds from remote to local
 if you tried it after local midnight.

Well, if I ma paying for 20Mbps download link, I expect to get 20Mbps
throughput at any time of day. The ISP also offers 40Mbps and 100Mbps
(for extra money), so I doubt that they are congested that much.

 If it used to be 20 Mbps, perhaps a new user has come online on
 your cable segment.

It is possible that the network is more congested during the day, but
if that were the case, I believe that my ISP would have a whole line of
people complaining all over the city... :-)

  To test the local link, I opened 15-20 random youtube links
  simultaneously in Firefox. It easily capped the full 20Mbps, so the
  local link apparently works as advertised.
 
 Here you are doing multiple downloads, not just one.  I don't know
 whether that makes a difference or not.

Yes, that seems to be the case, and yes, it appears to indeed make a
difference.

On further inspection, it looks like I can indeed get the full 20Mbps
in total, but every particular connection appears to be capped at
either 2Mbps or 150Kbps. And that is very broken.

I have even tried to do a yum update, and it connects to a mirror at
15KBps (150Kbps)...

The question really is the following --- can that be a local effect of
something in Fedora, or my router, or is it down to the ISP?

I would test it with a LiveCD if I had one, but I don't and it will
take forever to download any iso... :-(

If all else fails, I'll contact my ISP (and work my way through their
seven-gates-of-hell customer support thing...), and hope they can do
something about it.

Anyway, thanks for the thoughts!

Best, :-)
Marko

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Re: Was Mate desktop, ten caja instances. Now Nouveau

2013-08-10 Thread Marko Vojinovic
On Fri, 09 Aug 2013 23:17:25 -0400
Kevin J. Cummings cummi...@kjchome.homeip.net wrote:
 
 vdpau and XvMC
 
 When nouveau support them, I'll reconsider.  Buts its been years now,
 and still no support for them in nouveau.

The development of XvMC and vdpau support is in progress right now ---
take a look at

   http://nouveau.freedesktop.org/wiki/FeatureMatrix/

and specifically

   http://nouveau.freedesktop.org/wiki/VideoAcceleration/

The latter site comments that at the moment closed-source firmware is
typically needed for modern hardware. While nouveau itself refuses to
include it (and I can imagine Fedora too), it can be obtained either
manually or if your particular Linux distro provides it as a package.
There is a single-entry list of distros that do so far: Archlinux.

Maybe a nice small project for a rpmfusion package?

HTH, :-)
Marko

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Re: installing latex in F19

2013-08-10 Thread Marko Vojinovic
On Sat, 10 Aug 2013 20:06:34 -0500
Ranjan Maitra maitra.mbox.igno...@inbox.com wrote:
 
 sudo yum install
 texlive-{subfigure,frcursive,was,titlesec,sectsty,biblatex,bbm-macros,subfig,multirow,comment,relsize,arydshln,was,wrapfig,lastpage,endfloat,nonfloat,mathabx,mathabx-type1,sttools,yfonts}
 
I remember having similar trouble with the repackaged texlive in F18 ---
everything is split into a very large number of small packages, so that
one could install exactly what one needs. That is, provided that one
actually knows what one needs. :-)

I didn't want to bother with that, so I did

  yum install texlive-*

and installed basically all packages. Let me see... 4886 of them. But
since then, there was no TeX-related thing that I was missing... ;-)

HTH, :-)
Marko

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Re: nvidia on inspiron

2013-08-09 Thread Marko Vojinovic
On Fri, 09 Aug 2013 10:20:11 +0200
Patrick Dupre pdu...@gmx.com wrote:
 I reinstall a fedora 19 and I am experiencing troubles with the
 graphics apparently.
 With the previous installation fedora 14. I had to install:
 xorg-x11-drv-nvidia
 nvidia-settings
 nvidia-xconfig
 xorg-x11-drv-nvidia-libs
 and run:
 nvidia-xconfig
 
 Should I do the same again?

Most probably, the only thing you need to install is the kmod-nvidia
package from rpmfusion repo. It will pull in everything else you need.
I never needed to run nvidia-xconfig or similar utilities, and I don't
trust them to do a proper configuration.

If you need to change resolution away from the optimal one (whatever
reason be for wanting that), I suggest that you use xrandr. It is
by far the most proper way to configure the display. You may want to
familiarize yourself with man xrandr.

HTH, :-)
Marko

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Re: nvidia on inspiron

2013-08-09 Thread Marko Vojinovic
On Fri, 09 Aug 2013 10:43:05 +0200
Patrick Dupre pdu...@gmx.com wrote:
 Now
 yum install kmod-nvidia
 gives:
 Packages skipped because of dependency problems:
     1:kmod-nvidia-319.32-2.fc19.i686 from rpmfusion-nonfree-updates
     1:kmod-nvidia-3.10.3-300.fc19.i686-319.32-2.fc19.i686 from
 rpmfusion-nonfree-updates 1:xorg-x11-drv-nvidia-319.32-7.fc19.i686
 from rpmfusion-nonfree-updates
 1:xorg-x11-drv-nvidia-libs-319.32-7.fc19.i686 from
 rpmfusion-nonfree-updates
 
 It seems that there are some confusion with kmod-nvidia
 Which one?

Please provide the full yum output. I cannot see what is wrong from the
snippet that you gave.

Also, keep in mind that there is a kmod-nvidia driver for the recent
nvidia graphics cards, then there is another kmod-nvidia-304xx driver
for the older cards, and finally there is a kmod-nvidia-173xx driver
for ancient cards.

It would be a good idea to figure out which hardware you actually have,

 lspci | grep VGA

and then install the appropriate driver. You have the details spelled
out here:

  http://rpmfusion.org/Howto/nVidia

(although I'd say that this howto is a tad bit outdated, but it's
still mostly correct).

HTH, :-)
Marko

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Re: nvidia on inspiron

2013-08-09 Thread Marko Vojinovic
On Fri, 09 Aug 2013 13:22:10 +0200
Patrick Dupre pdu...@gmx.com wrote:
 yum install xorg-x11-drv-nvidia works fine and install:
 xorg-x11-drv-nvidia                    i686    1:319.32-7.fc19
 kmod-nvidia-3.9.9-302.fc19.i686.PAE    i686    1:319.32-1.fc19
 xorg-x11-drv-nvidia-libs               i686    1:319.32-7.fc19
 
   lspci | grep VGA
 
 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
 [AMD/ATI] RV515/M54 [Mobility Radeon X1400]

This is surreal! :-D

Ok, you should really do the following:

yum remove *-nvidia*
reboot

After that, go to 

  http://en.wikipedia.org/wiki/Nvidia

and read the very first paragraph of the article, nothing more. Just the
first paragraph. Or just the last two sentences of the first paragraph.
Or better yet, here, let me quote them to you:

begin quote
Nvidia and chief rival AMD Graphics Technologies (formerly ATI
Technologies) have dominated the high performance GPU market, pushing
other manufacturers to smaller, niche roles. Nvidia's primary GPU
product line labeled GeForce is in direct competition with AMD's
Radeon products.
end quote

The words rival and competition should suggest an important clue
here...

Moreover,

On Fri, 09 Aug 2013 10:20:11 +0200
Patrick Dupre pdu...@gmx.com wrote:
 I reinstall a fedora 19 and I am experiencing troubles with the
 graphics apparently.
 With the previous installation fedora 14. I had to install:
 xorg-x11-drv-nvidia
 nvidia-settings
 nvidia-xconfig
 xorg-x11-drv-nvidia-libs
 and run:
 nvidia-xconfig

I really really wonder how well that F14 installation worked, and who
gave you the advice to install those packages...

HTH, :-)
Marko

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Re: No EDID for VGA

2013-08-08 Thread Marko Vojinovic
On Thu, 08 Aug 2013 08:46:43 -0700
Jon Cosby li...@seablues.net wrote:
  I installed a GeForce 8400 GS graphics card to replace an integrated 
  chipset and can't even boot to the live CD (F18) or rescue mode now.
 It stops with the output
 
  Raw EDID
  [rows of hex digits all 0]
  Nouveau EI [ DRM] DDC responded, but no EDID for VGA-1
 
  I have openSUSE installed on this machine, and it runs with no 
  problems. The monitor is an old KDS 17 CRT. Is there any way to get 
  this working?

Sure there is. :-) It will just need a bit of effort to set up. :-)
Given that the monitor is old and that Fedora is complaining about
missing EDID, my guess is that the monitor does not provide a correct
one (caveat --- nouveau drivers are still under heavy development, so it
might be that there is a bug in the driver rather than a faulty
monitor).

Anyway, you want to do the following:

(1) While in openSUSE, find out which modeline X is using. This
information should be available in /var/log/Xorg.0.log (or
SUSE-equivalent of it). If you find it too cryptic, you may send us a
link to a pastebin, or use some utility that can write down the correct
modeline for you (there are many, and google is your friend).

(2) Boot and install F18 using the basic vga mode (i.e. the vesa
driver). While I sort-of remember that the LiveCD features a boot
option to that effect, you should either use that, or bootinstall in
text mode, or tweak kernel parameters to disable nouveau. The latter
would be adding rdblacklist=nouveau nouveau.modeset=0 to the kernel
line. You may need to add it on subsequent boots of the installed
system, until the modeline is put in place, or until you start using
kmod-nvidia instead of nouveau. Again, google is your friend. :-)

(3) I am not sure about the level of support for your graphics card by
the nouveau drivers, though at least elementary 2D graphics should
certainly be supported. Nevertheless, if that doesn't work, or if you
need accelerated graphics, after the installation of F18 you may
want to install kmod-nvidia drivers from rpmfusion. And remember, google
is your friend! ;-)

(4) If the monitor EDID is really at fault, you need to put the
modeline used by SUSE into the /etc/X11/xorg.conf  in the appropriate
section. On a fresh installation the xorg.conf file is likely to not
exist (although kmod-nvidia will probably create one). Anyway, create
it if it isn't there --- and put the modeline there. The details can be
found in copious amounts on the web, feel free to use google to find
out what to write where.

After this is set up and the system reboots, you should be good to go.

Note that this is just the outline of the procedure. If you don't know
how to perform each of these steps, or if google fails to be your friend
at any point, or if you get stuck somehow, ask here for details. ;-)

HTH, :-)
Marko

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Re: copying video dvds

2013-08-07 Thread Marko Vojinovic
On Tue, 06 Aug 2013 18:19:28 -0600
smcg4...@frii.com wrote:
 I generally mount and then use cp to copy my video dvds to
 hard disk for convenience.  99% of the time this works fine
 and the resulting directory is playable by vlc, etc.  
 However occasionally I'll get an Input/output error when
 copying a disc that vlc played fine and, unsurprisingly,
 there are problems when later trying to play the copy.
 
 I suspect that vlc makes use of error correction capabilities
 on the dvd, whereas cp doesn't.

There is also another possibility --- if the content is copyrighted,
the owners may opt to introduce deliberate errors in order to prevent
copying the contents of the disc. If that is the case, vlc will
attempt to read only the files it needs, and would not see the error,
while cp would try to copy everything, and get stuck.

 Is there some way or tool that will make a copy of the dvd 
 using (or at last preserving in the copy so that vlc can use)
 the error correction stuff on the dvd so that the copy is
 playable even when there are some errors? 

Others have suggested dd and variants, to make an identical copy of the
data on the disc. However, if your aim is to get a copy of the video
content of the disc, you can also use mplayer to copy the video to your
HD. Something like this:

   mplayer dvd:// -dumpstream -dumpfile my/video/file.avi

This will dump the actual movie into a file, rather than onto the
screen (and speakers). You can be more selective by using dvd://2,4-6 to
play only the tracks you are interested in, or use -dumpvideo or
-dumpaudio instead of -dumpstream to separately copy video only or
audio only. You may want to get familiar with man mplayer. Just don't
get too scared by the amount of options in the manual. :-)

The quality of the dump is of course equal to the original, since it's
just copying, not transcoding. The resulting file size will be the size
of the video data on the dvd disc itself (most, but not equal to the
size of the dvd disc). The dumped file can be played by any video
player (vlc, mplayer, ...) that supports MPEG, by pointing it to the
file.

In general, as far as mplayer usage goes --- if you can see the video
on the screen by playing it in mplayer, then you can also dump it in a
file instead, to make a copy. And generically mplayer will play
everything you throw at it, including copyrighted dvds with deliberate
errors etc... ;-)

Oh, and you may also want to install the libdvdcss package from
the old Livna repository (http://rpm.livna.org/), in order to get
around the CSS enryption (Content Scramble System) for some
copyrighted dvds...

HTH, :-)
Marko

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Re: copying video dvds

2013-08-07 Thread Marko Vojinovic
On Wed, 07 Aug 2013 22:34:52 +0930
Tim ignored_mail...@yahoo.com.au wrote:
 Allegedly, on or about 07 August 2013, Marko Vojinovic sent:
  you can also use mplayer to copy the video to your HD. Something
  like this:
  
 mplayer dvd:// -dumpstream -dumpfile my/video/file.avi
 
 Won't that do everything on the disc?  Don't you need a number 1 after
 that, to play just the main title?  (Can't try that, myself, at the
 moment.  I've done individual tracks before, never tried omitting the
 title number.)

If you omit the track number, mplayer will play the default track,
which is usually track 1. However, I've seen dvds which change this
default --- apparently in the dvd's table of contents it might be
indicated what is considered to be the default tracks to play, and
mplayer will play that, if found. It does not necessarily mean
everything on the whole disc.

Of course, you may specify the track number(s) explicitly, if and when
you know which one you want to play. :-)

 Might be worth pointing out that although you've called your sample
 file a file.avi, above, it's not an AVI file format.  Since you're
 creating a MPEG filedump, you may as well use a mpeg, mpg, or vob
 file suffix, just so that your filename gives you an instant clue
 about what it is, or for automating what program will play it when
 you double-click on it.  Some media players are better at one thing
 than another, and you might want to set different default programs to
 open particular file formats. 

Yes, you're right. :-) I got used to the fact that Linux doesn't care
about file extensions, so I use .avi just as a reminder for myself that
it is a file containing multimedia (i.e. audio and video). But someone
else might try to play the file in a non-Linux environment, and then a
file extension might be relevant.

The DVD video format is usually mpeg-2 for video and AAC for audio,
which are packed up into a mpeg-ps container format. According to
wikipedia [1], it has the following typical file extensions:

  .mpg, .mpeg, .m2p, .ps

So maybe a better filename would be file.mpeg or similar.

Best, :-)
Marko

[1] http://en.wikipedia.org/wiki/MPEG_program_stream

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Re: Do I need avahi?

2013-08-04 Thread Marko Vojinovic
On Sun, 04 Aug 2013 10:31:34 +0200
Lars E. Pettersson l...@homer.se wrote:

 On 08/04/2013 10:16 AM, Lars E. Pettersson wrote:
  On 07/31/2013 05:15 AM, Marko Vojinovic wrote:
  You are confusing the avahi library with the avahi daemon. The
  daemon
 ...
  I see no further point in discussing this thread. The avahi
  service is not a dependency on anything serious and you can safely
  remove it if you don't want to use it.
  
  No, you can not remove it (the avahi-daemon package named avahi)
  with yum due to dependencies.
 
 I have now tried it on two other computers, with the exact same
 result. So Marko, it is not PEBKAC. Try 'yum erase avahi' yourself.

I did, and it only wanted to remove wine packages as dependencies.
However, this was on F18, rather than F19.

If this yum output is reproducible on F19, then I suggest
that you file a bug against avahi (or maybe avahi-glib and avahi-libs)
and complain against unnecessary dependencies. And do emphasize
there that this is a regression from F18, which doesn't have that
problem.

I'd be interested to follow-up on that bugreport, so please post a link
to it here.

Best, :-)
Marko

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Re: desktop file location

2013-08-03 Thread Marko Vojinovic
On Sat, 03 Aug 2013 04:51:37 -0500
g gel...@bellsouth.net wrote:
 On 08/03/2013 12:16 AM, Marko Vojinovic wrote:
  I wasn't joking when I said that you should read it.
 
 i was not thinking that you were joking.

Are you being ignorant deliberately? Did you *actually* *read* that
article? It *literally* contains the answer to your next question! See
below:

 the fact of it is, using folder view widget is that it displays my
 _entire_ /home/geo/* directory, minus the hidden directories and
 files.
 
 this is different from what is show with the _normal_ Desktop
 widget. :=(

The answer to this is written explicitly in the article I pointed you
to. Let me quote it for you from there:

begin quote
3. It will have most likely displayed your desktop files by default.
So, you will need to change the location. Right click on the Folderview
titlebar and click “Folderview settings”.

4. From the settings, you can “specify a folder”. Instead of choosing a
folder you already have, create a new one called “Apps” or
“Applications”. Click “OK”.
end quote

You just don't want to create a new folder but instead choose the one
you already have: /home/geo/ (as you say).

begin rant
I will not answer any more of your questions unless you demonstrate
that you are also trying to learn on your own. And I doubt that anyone
else would, too. You come to a Fedora list asking questions about SL
which turn out to be generic KDE questions, and you fail (two times!) to
follow the elementary the-answer-is-there-go-read-about-it
instruction.
end rant

There is a saying where I come from:

One should not be ashamed for failing to know. But one should be
ashamed for failing to learn.

Think about it.

HTH, :-)
Marko

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