I finally managed to get a core dump and a better stacktrace:
(gdb) bt full
#0 XIGetDeviceProperty (dev=0x7f962cfb5760, property=optimized out,
value=0x7fff8ba11458) at ../../Xi/xiproperty.c:852
handler = optimized out
prop = 0x7f962cfba920
rc = optimized out
#1
Those of you who are seeing similar problems; could you try to get a
core dump and a full stack trace?
Here's how I managed to do it:
1. Prevent X from trapping SIGSEGV by putting the following in
/usr/share/X11/xorg.conf.d/00-no-trap-signals.conf:
Section ServerFlags
Option
Hmm Interesting... The same thing actually happened to me. First
crash after going through the above didn't produce a core dump. A couple
of days later though, crash + core dump. Don't know why it wouldn't
work the first time but maybe trying again will get you a core, like it
did for me.
Andy, you describe exactly what I'm seeing and I'm on a T520 with Intel
Graphics as well.
It just happened again shortly after coming out of suspend. Kicked me
back login screen with a segfault in the X log. Same stack trace as the
first one.
I've installed xserver-xorg-core-dbg
Oh, and for what it's worth I didn't see on either 10.04 or 11.10 after
extensive use.
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Xorg segfault
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So far, a one-off segfault in X. Log says:
[ 42237.826] Backtrace:
[ 42237.880] 0: /usr/bin/X (xorg_backtrace+0x26) [0x7f41ee887816]
[ 42237.880] 1: /usr/bin/X (0x7f41ee6ff000+0x18c6ba) [0x7f41ee88b6ba]
[ 42237.880] 2: /lib/x86_64-linux-gnu/libpthread.so.0
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Title:
Xorg segfault
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I was wrong... What I'm seeing is a gnome-shell hang. Just hit it again
with no drm errors in syslog. X is still live but gnome-shell is stuck
on on a futex wait.
killall -9 gnome-shell from another VT fixes it.
Sorry for the noise...
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I'm seeing this too. Clean install of 11.10 on a ThinkPad T520
(SandyBridge chip).
Using a vanilla GNOME 3 session (No Unity, no compiz) - same symptoms: X
hangs but machine is otherwise OK.
Alexandre mentioned VMWare... For me, this is semi-reliably reproducible
by running 3D applications in a
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