X Segfaults

[Klaas van Schelven]

My system started crashing at regular intervals (10 minutes to one hour) since this afternoon;

I'm not aware of running any updates, but I might have done an "aptitude safe-upgrade" anywhere in the past week. I'm fully up to date on Ubuntu 14.04.3 now.

The problems seem to exclusively occur when running Chrome (47) / Chromium (45) (I switched to that browser when the problem occurred a few times, but this didn't solve it), but this may also simply be a consequence of my browser being the most Graphics-heavy part of the system.

I'm running on a MacbookPro, inside Parallels; this was not a problem until this afternoon.

/var/log/Xorg.0.log looks like this:

[ 6197.350] (EE) Backtrace:
[ 6197.351] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7f25c67f0848]
[ 6197.351] (EE) 1: /usr/bin/X (0x7f25c6647000+0x1ad539) [0x7f25c67f4539]
[ 6197.351] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f25c5743000+0x10340) [0x7f25c5753340]
[ 6197.351] (EE) 3: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlUpdateGLXCliping+0x429) [0x7f25c0dde019]
[ 6197.351] (EE) 4: /usr/bin/X (FindClientResourcesByType+0x98) [0x7f25c66c0118]
[ 6197.351] (EE) 5: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlUpdateGLXClipingAll+0x50) [0x7f25c0ddb7b0]
[ 6197.351] (EE) 6: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlSetFullscreenGLXDrawable+0xa8) [0x7f25c0ddc1a8]
[ 6197.351] (EE) 7: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlDetectFullscreenGLXDrawable+0xc3) [0x7f25c0ddd963]
[ 6197.351] (EE) 8: /usr/bin/X (FindClientResourcesByType+0x98) [0x7f25c66c0118]
[ 6197.351] (EE) 9: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlDetectFullscreenGL+0x4c) [0x7f25c0ddb74c]
[ 6197.351] (EE) 10: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlRefreshDrawable+0x8c) [0x7f25c0ddec3c]
[ 6197.351] (EE) 11: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (0x7f25c0dc5000+0x10bad) [0x7f25c0dd5bad]
[ 6197.351] (EE) 12: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (0x7f25c0dc5000+0x14f19) [0x7f25c0dd9f19]
[ 6197.351] (EE) 13: /usr/bin/X (0x7f25c6647000+0x55f0e) [0x7f25c669cf0e]
[ 6197.351] (EE) 14: /usr/bin/X (0x7f25c6647000+0x59d9a) [0x7f25c66a0d9a]
[ 6197.351] (EE) 15: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f25c4183ec5]
[ 6197.351] (EE) 16: /usr/bin/X (0x7f25c6647000+0x451ee) [0x7f25c668c1ee]
[ 6197.351] (EE)
[ 6197.351] (EE) Segmentation fault at address 0x2d0
[ 6197.351] (EE)
Fatal server error:
[ 6197.351] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 6197.351] (EE)
[ 6197.351] (EE)
Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
[ 6197.351] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 6197.351] (EE)

[Klaas van Schelven (klaas-vanschelven)]

I've managed to find a path to reliably reproduce, ironically while attempting to provide further information:

In both Chrome & Chromium, selecting the above stacktrace, rightclicking and selecting "Copy" crashes X.

[Klaas van Schelven (klaas-vanschelven)]

The above path for reproducing the error works reliably, even after a full system restart (i.e. restarting more than X alone)

The stacktrace is similar but different from the earlier one:

[ 45.766] (EE) Backtrace:
[ 45.769] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fb263cac848]
[ 45.769] (EE) 1: /usr/bin/X (0x7fb263b03000+0x1ad539) [0x7fb263cb0539]
[ 45.769] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb262bff000+0x10340) [0x7fb262c0f340]
[ 45.769] (EE) 3: /usr/lib/xorg/modules/drivers/prlvideo_drv.so (PrlCtlDestroyWindow+0x31) [0x7fb25e28f6c1]
[ 45.769] (EE) 4: /usr/bin/X (0x7fb263b03000+0xe2901) [0x7fb263be5901]
[ 45.769] (EE) 5: /usr/bin/X (0x7fb263b03000+0x10a03c) [0x7fb263c0d03c]
[ 45.769] (EE) 6: /usr/bin/X (0x7fb263b03000+0x12e5b8) [0x7fb263c315b8]
[ 45.769] (EE) 7: /usr/bin/X (0x7fb263b03000+0x7f677) [0x7fb263b82677]
[ 45.769] (EE) 8: /usr/bin/X (DeleteWindow+0x246) [0x7fb263b852f6]
[ 45.769] (EE) 9: /usr/bin/X (0x7fb263b03000+0x78492) [0x7fb263b7b492]
[ 45.769] (EE) 10: /usr/bin/X (FreeResource+0xa1) [0x7fb263b7bf21]
[ 45.769] (EE) 11: /usr/bin/X (0x7fb263b03000+0x50cf7) [0x7fb263b53cf7]
[ 45.770] (EE) 12: /usr/bin/X (0x7fb263b03000+0x55f0e) [0x7fb263b58f0e]
[ 45.770] (EE) 13: /usr/bin/X (0x7fb263b03000+0x59d9a) [0x7fb263b5cd9a]
[ 45.770] (EE) 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fb26163fec5]
[ 45.770] (EE) 15: /usr/bin/X (0x7fb263b03000+0x451ee) [0x7fb263b481ee]
[ 45.770] (EE)
[ 45.770] (EE) Segmentation fault at address 0xa4

[Klaas van Schelven (klaas-vanschelven)]

Running Chrome like so seems to be a somewhat reliable workaround (fingers crossed):

google-chrome --disable-gpu

[Theo Linkspfeifer (lastonestanding)]

Most likely resolved. If not, please let us know.

[Launchpad Janitor (janitor)]

[Expired for chromium-browser (Ubuntu) because there has been no activity for 60 days.]