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Re: mysterious X lockups on Sarge

On Tue, Aug 31, 2004 at 02:26:12PM -0300, ScruLoose wrote:
> Hi all,
> For several weeks now, I've been having X lock up on me occasionally, 
> and I'm a bit stumped as to where to start debugging it...
> I'm running Sarge on a P4 3.2 HT, and my video card is a GeForce FX 
> 5200 using the nvidia binary driver.  I've had this problem on both a 
> home-rolled 2.4.22 kernel and the Debian 2.6.7-SMP kernel-package.
Do you get the same problem with the generic VESA drivers? (no modules
in the kernel, just Driver "vesa" - works for my SiS 315 even though
they say it's unsupported)

> Every couple of days or so X seems to die an abrupt death.  The display 
> will freeze completely, keyboard input has no effect (including 
> CTRL-ALT-F1 and CTRL-ALT-BACKSPACE).  The system is still running, 
> though: If XMMS is playing when the problem hits, the music keeps on 
> going; and I can ssh in to the box no problem.  If I kill -9 the XDM and 
> /usr/X11R6/bin/X processes then the screen goes black... but then doing 
> /etc/init.d/xdm start just silently fails.  So I've been ssh-ing in just 
> to reboot the box.
Try deleting the pidfile before restarting xdm. (/var/run/xdm.pid)
Or perhaps just do sudo startx?

> Now, I've had this happen while I was surfing the web, and while the 
> screensaver was running, and sometimes after the monitor has gone to 
> sleep (oh, and once in the middle of a game of armagetron).
> A "tail" of XFree86.0.log shows a bunch of GetModeLine entries, but 
> nothing that looks like error or panic or "ack! I'm dying!"...
> I've done an 8-hr run of memtest86 with no complaints at all, the 
> temperature seems to be happy, and loading the crap out of the system 
> doesn't make it fail (I tried 5 hours of a kernel-compile loop, and 2 
> hours of cpuburn with no problems).
When you ssh in, does "dmesg" show anything abnormal?

> So where do I start looking to figure out what's causing this and/or to 
> fix it.

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