[GM45] intel gfx driver crash on logout (Latitude E6500 with Mobile 4 Series)

[Achim Bohnet]

On a Dell Latitude E6500 with Mobile 4 Series Intel Gfx i get with karmic after logout
from a 'failsafe session' or 'KDE' session, a black screen. Alt-Ctrl-F 1, 2, etc show
no effect, i.e. screen stays completly black, No virutal console prompts.

Looking at the Xorg.0.log shows that the driver crashed on shutdown:

...

(II) UnloadModule: "synaptics"
(II) DualPoint Stick: Close
(II) UnloadModule: "evdev"
(II) Open ACPI successful (/var/run/acpid.socket)
(II) APM registered successfully
(II) intel(0): [DRI2] Setup complete
(**) intel(0): Kernel mode setting active, disabling FBC.
(**) intel(0): Framebuffer compression disabled
(**) intel(0): Tiling enabled
(**) intel(0): SwapBuffers wait enabled
(==) intel(0): VideoRam: 262144 KB
(II) intel(0): Attempting memory allocation with tiled buffers.

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x26) [0x4f0086]
1: /usr/bin/X(xf86SigHandler+0x41) [0x485091]
2: /lib/libc.so.6 [0x7fffa898c530]
3: /usr/lib/libdrm_intel.so.1(drm_intel_bo_alloc+0) [0x7fffa6f648e0]
4: /usr/lib/xorg/modules/drivers//intel_drv.so(i830_allocate_memory+0x24a) [0x7fffa71a095a]
5: /usr/lib/xorg/modules/drivers//intel_drv.so(i830_allocate_2d_memory+0xb4) [0x7fffa71a1274]
6: /usr/lib/xorg/modules/drivers//intel_drv.so [0x7fffa7196fa7]
7: /usr/lib/xorg/modules/drivers//intel_drv.so [0x7fffa719b420]
8: /usr/bin/X(AddScreen+0x1d4) [0x4336e4]
9: /usr/bin/X(InitOutput+0x76f) [0x46efdf]
10: /usr/bin/X(main+0x1fe) [0x433dee]
11: /lib/libc.so.6(__libc_start_main+0xfd) [0x7fffa8977abd]
12: /usr/bin/X [0x433429]
Saw signal 11. Server aborting.

Achim

[Achim Bohnet (allee)]

As apport-bug seems does not work at the moment, apport-cli save file data attached

[Geir Ove Myhr (gomyhr)]

Could you try to get a full backtrace? There is some explanation for how to do this (it's a bit messy, since there are many ways to do it and not all will work in all situations). My favourite way is to do
sudo /etc/init.d/gdm stop
ulimit -c unlimited
sudo /etc/init.d/gdm start
from a VT to enable core files (see under post-mortem backtrace)
and then analyze the core file with
sudo gdb /usr/bin/Xorg /etc/X11/core 2>&1 | tee gdb-Xorg.txt
(gdb) backtrace full
(gdb) quit
And then upload then upload the file gdb-Xorg.txt.
If you are not able to create a core file you may try some of the other tricks mentioned on that page.

[Achim Bohnet (allee)]

I can't reproduce the crash on session logout anymore. Looks like the lastet update

xserver-xorg-video-intel (2:2.8.1-1ubuntu2) karmic; urgency=low

  * Add 102_dont_destroy_bufmgr_at_closescreen_time.patch: Don't destroy
    bufmgr at CloseScreen time (LP: #428662).

 -- Alberto Milone <email address hidden> Fri, 25 Sep 2009 14:53:26 +0200

Fixed it. I'll close the bug.

Achim