X11 crashes with Signal 11 if problematic fonts are available

[H.-Dirk Schmitt]

Since some time the X11 has become unstable on one of my machines.
I'm getting after a short or longer time a X11 crash with signal 11.

The problem is reproducible if I'm use the "recovery console" in gdm and start in the xterm xemacs.

To work around this problem I have tried to move from nvidia-current (natty and oneiric) to nouveau.
This hasn't solved the problem.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-core 2:1.10.1-1ubuntu1.2
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic x86_64
Architecture: amd64
Date: Sat Aug 27 16:19:03 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
 LC_PAPER=de_DE.UTF-8
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.10.2-0ubuntu2.1
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2.1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[H.-Dirk Schmitt (dirk-computer42)]

Motivated by debbugs #626655 I upgraded the system with the xserver-xorg-core package from oneiric.
Now it seems that the signal 11 problem disappears.

[H.-Dirk Schmitt (dirk-computer42)]

The oneiric packages makes the system more stable.
But invoking "9menu" on a remote system with display set to the local machine crashes the X server.

[H.-Dirk Schmitt (dirk-computer42)]

On another machine (old dell inspiron, natty, i386) X server crashes after invoking clementine.

[H.-Dirk Schmitt (dirk-computer42)]

Backtrace:
[ 599.640] 0: /usr/bin/X (xorg_backtrace+0x26) [0x460436]
[ 599.640] 1: /usr/bin/X (0x400000+0x64a4a) [0x464a4a]
[ 599.640] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb06f58e000+0xfc60) [0x7fb06f59dc60]
[ 599.640] 3: /usr/bin/X (doListFontsWithInfo+0x16a) [0x4305ba]
[ 599.640] 4: /usr/bin/X (ProcessWorkQueue+0x21) [0x433cf1]
[ 599.640] 5: /usr/bin/X (WaitForSomething+0x65) [0x45de15]
[ 599.640] 6: /usr/bin/X (0x400000+0x2f8c2) [0x42f8c2]
[ 599.640] 7: /usr/bin/X (0x400000+0x232ae) [0x4232ae]
[ 599.640] 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7fb06e4d7eff]
[ 599.640] 9: /usr/bin/X (0x400000+0x2359d) [0x42359d]
[ 599.640] Segmentation fault at address 0x33d055ecd0
[ 599.640]
Caught signal 11 (Segmentation fault). Server aborting
[ 599.640]
Please consult the The X.Org Foundation support
         at http://wiki.x.org

[H.-Dirk Schmitt (dirk-computer42)]

Disabling a network xfs server seems to fix the problem

[Bryce Harrington (bryce)]

Great, glad to hear you got it sorted. Yeah, xfs is kind of antiquated; these days you generally don't need or want a font server...