Alt+F7 fails to switch to graphical console (X server) from a text console under some conditions
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From: Stephen Powell on 7 Feb 2010 22:10 On Sun, 7 Feb 2010 20:11:02 -0500 (EST), Frank McCormick wrote: > On Mon, 08 Feb 2010 01:01:17 +0000, Tom Furie <tom(a)furie.org.uk> wrote: >> On Sun, Feb 07, 2010 at 06:02:30PM -0500, Stephen Powell wrote: >>> >>> I have been having trouble lately with losing access to my >>> graphical console. The basic symptom is that I am in the >>> graphical console, I switch to a text console via Ctrl+Alt+F1, do >>> some stuff in the text console, then when I attempt to switch >> Have you checked Alt+F8, Alt+F9, possibly even beyond? On one of my >> systems, for reasons that are still unclear to me, GDM occasionally >> runs somewhere between tty8-10 after I've logged in and out a few >> times. I can only guess it's restarting before it's fully stopped. > Same thing here - running Debian testing...and after switching > back and forth a few times GDM ends up on tty8 instead of 7. I must confess I never even thought to check that. The next time it happens, I'll give it a try. Have either of you come up with a consistent scenario that always reproduces the failure? I'm not explicitly stopping and restarting the X server or the GDM daemon. I'm just switching back and forth between a text console and the graphical console. Has either of you filed a bug report? The only reason I haven't asked about this before is that I was hoping to come up with a consistent failure scenario. There's nothing worse than a bug that can't be reproduced on demand. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Mike Viau on 7 Feb 2010 22:40 > Date: Sun, 7 Feb 2010 22:06:20 -0500 > From: zlinuxman(a)wowway.com > To: debian-user(a)lists.debian.org > Subject: Re: Alt+F7 fails to switch to graphical console (X server) from a text console under some conditions > > On Sun, 7 Feb 2010 20:11:02 -0500 (EST), Frank McCormick wrote: > > On Mon, 08 Feb 2010 01:01:17 +0000, Tom Furie <tom(a)furie.org.uk> wrote: > >> On Sun, Feb 07, 2010 at 06:02:30PM -0500, Stephen Powell wrote: > >>> > >>> I have been having trouble lately with losing access to my > >>> graphical console. The basic symptom is that I am in the > >>> graphical console, I switch to a text console via Ctrl+Alt+F1, do > >>> some stuff in the text console, then when I attempt to switch > > >> Have you checked Alt+F8, Alt+F9, possibly even beyond? On one of my > >> systems, for reasons that are still unclear to me, GDM occasionally > >> runs somewhere between tty8-10 after I've logged in and out a few > >> times. I can only guess it's restarting before it's fully stopped. > > > Same thing here - running Debian testing...and after switching > > back and forth a few times GDM ends up on tty8 instead of 7. > > I must confess I never even thought to check that. The next time > it happens, I'll give it a try. Have either of you come up with > a consistent scenario that always reproduces the failure? Not consistently, but the issue exists on my ubuntu installed laptop as well. > explicitly stopping and restarting the X server or the GDM daemon. > I'm just switching back and forth between a text console and the > graphical console. Has either of you filed a bug report? No, but if one could provided insight to where exactly the fault was (what causes the graphical console number to change or become unresponsive, it would help. > The only reason I haven't asked about this before is that I was > hoping to come up with a consistent failure scenario. There's > nothing worse than a bug that can't be reproduced on demand. I agree with you on that. > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian..org > -M _________________________________________________________________ Introducing Windows® phone. http://go.microsoft.com/?linkid=9708122
From: josé Santos on 8 Feb 2010 05:00 On Mon, Feb 08, 2010 at 01:11:02AM +0000, Frank McCormick wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Mon, 08 Feb 2010 01:01:17 +0000 > Tom Furie <tom(a)furie.org.uk> wrote: > > > On Sun, Feb 07, 2010 at 06:02:30PM -0500, Stephen Powell wrote: > > > > > I have been having trouble lately with losing access to my > > > graphical console. The basic symptom is that I am in the > > > graphical console, I switch to a text console via Ctrl+Alt+F1, do > > > some stuff in the text console, then when I attempt to switch > > > > Have you checked Alt+F8, Alt+F9, possibly even beyond? On one of my > > systems, for reasons that are still unclear to me, GDM occasionally > > runs somewhere between tty8-10 after I've logged in and out a few > > times. I can only guess it's restarting before it's fully stopped. > > > z > > Same thing here - running Debian testing...and after switching > back and forth a few times GDM ends up on tty8 instead of 7. > > > - -- > Frank I have this kind of behaviour since 2.6.30-2, so maybe its not kernel related. My system has nvidia drivers installed the Debian way, using nv or nvidia makes no difference, one day by Chance I tried tty8 where X was, witch is odd. -- ________________________________________________ Jos� Santos | Debian Squeeze/Sid mixed system jsantos(a)ubi.pt | 2.6.30.1-686 SMP PREEMPT -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Stephen Powell on 8 Feb 2010 10:20 On Mon, 8 Feb 2010 06:26:33 -0500 (EST), Tom Furie wrote: > I haven't filed a bug report because I'm not sure what to file it > against. I'm not even sure it could be called a bug, I don't have > anything in my config to tell GDM to specifically start on tty7, so it > just grabs the first available one. /var/log/Xorg.0.log tells you what console it started on, and the flags indicate that the option is supplied on the command line. For example, Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. ... (++) using VT number 7 The double plus sign is the marker for "from command line". So if you find the script that starts the X server and supplies that command line option, you'll be well on your way to finding the bug. The next step will be to find the logic that "calculates" this command line switch. And if you find the faulty logic you'll know which package to report a bug against. (i.e. which package is this script file shipped with?) And you'll even be able to supply a patch file with the bug report. I'll start looking too, but I won't have access to that machine until this evening. Maybe a good place to start looking would be /etc/init.d/gdm. > You aren't restarting X or GDM, but if GDM started on tty8, because tty7 > was unavailable for whatever reason, the first you would know about it > is when you tried to switch back to it from another tty. Good point. And a reboot always seems to cure it. And that makes sense, because following a reboot, virtual terminal 7 is always available. But if I logout and login again, that restarts the X server. Hmm. Maybe all vestiges of the old copy of the X server have not yet been completely removed from the system at the time the logic executes which tries to determine the next available virtual terminal. I wonder if this has anything to do with the new dependency-based booting? Or are we there yet? I also wonder if I issued /etc/init.d/gdm stop /etc/init.d/gdm start (with a wait time of a few second between the two commands) instead of /etc/init.d/gdm restart if that would make a difference? (Of course the /etc/init.d/gdm script has to be invoked from a text console as root.) -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Stephen Powell on 8 Feb 2010 20:40 On Mon, 8 Feb 2010 11:58:51 -0500 (EST), Tom Furie wrote: > The commented option lines are showing their default values. It might be > worth setting VTAllocation=false (in /etc/gdm/gdm.conf, [daemon] > section) and see if that has any effect. > > Hmm, from a gdm session logged in on tty7, logging out restarts X but on > tty8. Logging out of that session also restarts X, but it stays on tty8. > Restarting, or stopping and starting, gdm brings it back up still on > tty8. This behaviour doesn't seem to be altered by the VTAllocation > setting. According to Xorg.0.log, VT8 is being passed in from the > command line. I was able to reproduce the symptoms that you describe above when I first arrived home. I verified that the X server was running on vt 7, then did a logout. The login screen started on vt 8. From then on, no matter what I did to stop and restart the server, it ended up on vt 8. There were some pending updates; so I applied updates, shutdown, and rebooted. But now I can no longer (at least for now) reproduce the problem. No matter how I shutdown and restart the server, it ends up on vt 7, which is of course the desired behavior. Does that mean it's fixed? Maybe. Then again, maybe not. I found the following bug report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=348033 It was originally opened on January 14, 2006; so this bug is more than four years old. It has been opened and closed several times and is marked unreproducible! This is not a good sign. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
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