Red Hat Bugzilla – Bug 190461
Random crashes when using X
Last modified: 2009-12-14 15:37:23 EST
Description of problem:
I experience kernel crashes when using X with Xen, whether I start X through
rhgb, runlevel 5 or startx in runlevel 3.
Version-Release number of selected component (if applicable):
About half the time with rhgb.
Maybe one in ten times without rhgb booting to runlevel 5.
Likewise when running startx in runlevel 3.
System is known to be stable without Xen, as well as with Xen and without X,
even under load.
Steps to Reproduce:
1. Boot with rhgb
1. Boot without rhgb to runlevel 5
1. Boot without rhgb to runlevel 3, run startx with .xinitrc containing just
2. Move pointer into xterm, type C-d to exit the shell running in the xterm,
thus shutting down X.
Machine crashes at unpredictable time after rhgb started X and before graphical
login appears. Both hangs and spontaneous reboots happen. Machine crashes on
shutdown from runlevel 5, possibly while shutting down X. Maschine crashes
during X startup and shutdown from startx. Machine crashes while idling after
Machine doesn't crash.
Dell Latitude D610, Intel Corporation Mobile 915GM/GMS/910GML Express Graphics
kernel-xen0-2.6.16-1.2096_FC5 appears to have the same problem.
memtest86+ is happy (2 full passes, ~2 hours).
title Fedora Core (2.6.16-1.2096_FC5xen0)
kernel /xen.gz-2.6.16-1.2096_FC5 com1=38400,8n1 sync_console
module /vmlinuz-2.6.16-1.2096_FC5xen0 ro root=/dev/VolGroup00/LogVol00 \
console=ttyS0 console=tty pnpacpi=off rhgb
Could well be related to Bugzilla Bug 190028 â Display messed up.
Created attachment 128496 [details]
Console output of ten reboots into runlevel 5, 9 ok, 1 crash
Created attachment 128497 [details]
Diff between successful non-rhgb boot to runlevel 5 (first one in attachment 128496 [details]) and same with rhgb
Created attachment 128498 [details]
Diff between successful and unsuccessful rhgb boot to runlevel 5
Created attachment 128499 [details]
Diff between successful non-Xen (kernel-2.6.16-1.2096_FC5) and Xen (kernel-xen0-2.6.16-1.2096_FC5) boot, note funny PCI bridge setup differences
*** Bug 183341 has been marked as a duplicate of this bug. ***
Markus, are you still seeing this?
My x86-64 with Radeon is well behaved now...
Machine is now running plain FC-5. Quick test: while true; do telinit 5; sleep
10; telinit 2; sleep 10; done
kernel-xen0-2.6.17-1.2187_FC5 crashes after a few iterations, looks random
kernel-2.6.17-1.2187_FC5 didn't crash
my development kernel based on
http://hg.et.redhat.com/kernel/linux-2.6-xen-fedora didn't crash
Do you want me to try other kernels? Do you need more information about the
crashes I see now?
I don't know if this is relevant, and I also don't really know how to provide
any good information on it, but I see something similar on my FC devel laptop. I
can boot xen kernel up just fine in console mode. Everything works. When I start
X I get to the gdm login, but if I try to login the machine crashes so fast and
so hard that I've got no possibility to get any useful debug information.
Using the normal (non xen) kernel works just fine.
Since I've discovered that my crashes are not even a tiny bit random (in fact
there seems to be some kind of trouble with xen/compiz), I've opened a new
report (#210277) for it.
Any change on this?
I retried switching between run levels 3 and 5 in a loop (with somewhat random
delays). More than forty iterations, no problems. kernel-xen-2.6.20-1.2948.fc6
I guess the bug has been fixed upstream (supporting evidence in comment#7), and
the fix has made it into FC-6.
change QA contact
OK, looks like this has been resolved (and this bug is very old). Closing it out.