Comment 12 for bug 407587

Well, I think we are not through with the problems with 865. More often than not when the box is booting, X won't start and I won't get access to the VTs when that happens. I can shut it down gracefully by pressing power button or by using alt-sysRq keys. From another box through SSH I get to see this on dmesg:

[ 85.663792] [drm:i915_wait_request] *ERROR* something (likely vbetool) disabled interrupts, re-enabling
[ 85.663820] render error detected, EIR: 0x00000010
[ 85.663827] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[ 85.663838] render error detected, EIR: 0x00000010

Just in case, here's the backtrace of X:

$ sudo gdb proogram 2252
GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
proogram: No existe el fichero ó directorio.
Adjuntando a process 2252
Leyendo símbolos desde /usr/bin/Xorg...(no debugging symbols found)...hecho.
Leyendo símbolos desde /usr/lib/libpciaccess.so.0...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libpciaccess.so.0
Leyendo símbolos desde /lib/tls/i686/cmov/libdl.so.2...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/tls/i686/cmov/libdl.so.2
Leyendo símbolos desde /usr/lib/libXfont.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libXfont.so.1
Leyendo símbolos desde /usr/lib/libXau.so.6...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libXau.so.6
Leyendo símbolos desde /usr/lib/libfontenc.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libfontenc.so.1
Leyendo símbolos desde /usr/lib/libpixman-1.so.0...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libpixman-1.so.0
Leyendo símbolos desde /usr/lib/libhal.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libhal.so.1
Leyendo símbolos desde /lib/libdbus-1.so.3...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libdbus-1.so.3
Leyendo símbolos desde /lib/tls/i686/cmov/libpthread.so.0...(no debugging symbols found)...hecho.
[Thread debugging using libthread_db enabled]
Símbolos cargados para /lib/tls/i686/cmov/libpthread.so.0
Leyendo símbolos desde /usr/lib/libXdmcp.so.6...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libXdmcp.so.6
Leyendo símbolos desde /lib/libgcrypt.so.11...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libgcrypt.so.11
Leyendo símbolos desde /lib/tls/i686/cmov/libm.so.6...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/tls/i686/cmov/libm.so.6
Leyendo símbolos desde /lib/tls/i686/cmov/librt.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/tls/i686/cmov/librt.so.1
Leyendo símbolos desde /lib/libgcc_s.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libgcc_s.so.1
Leyendo símbolos desde /lib/tls/i686/cmov/libc.so.6...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/tls/i686/cmov/libc.so.6
Leyendo símbolos desde /lib/libz.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libz.so.1
Leyendo símbolos desde /lib/ld-linux.so.2...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/ld-linux.so.2
Leyendo símbolos desde /usr/lib/libfreetype.so.6...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libfreetype.so.6
Leyendo símbolos desde /lib/libgpg-error.so.0...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libgpg-error.so.0
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//libextmod.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//libextmod.so
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//libdbe.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//libdbe.so
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//libdri.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//libdri.so
Leyendo símbolos desde /usr/lib/libdrm.so.2...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libdrm.so.2
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//libdri2.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//libdri2.so
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//librecord.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//librecord.so
Leyendo símbolos desde /usr/lib/xorg/modules/extensions//libglx.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/extensions//libglx.so
Leyendo símbolos desde /usr/lib/xorg/modules/drivers//intel_drv.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules/drivers//intel_drv.so
Leyendo símbolos desde /usr/lib/libdrm_intel.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/libdrm_intel.so.1
Leyendo símbolos desde /usr/lib/xorg/modules//libfb.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/xorg/modules//libfb.so
Leyendo símbolos desde /usr/lib/dri/i915_dri.so...(no debugging symbols found)...hecho.
Símbolos cargados para /usr/lib/dri/i915_dri.so
Leyendo símbolos desde /lib/libexpat.so.1...(no debugging symbols found)...hecho.
Símbolos cargados para /lib/libexpat.so.1
0x00e84422 in __kernel_vsyscall ()
(gdb) backtrace full
#0 0x00e84422 in __kernel_vsyscall ()
No symbol table info available.
#1 0x00349629 in ioctl () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2 0x0014db2d in drmIoctl () from /usr/lib/libdrm.so.2
No symbol table info available.
#3 0x0014df22 in drmCommandNone () from /usr/lib/libdrm.so.2
No symbol table info available.
#4 0x002075fe in ?? () from /usr/lib/xorg/modules/drivers//intel_drv.so
No symbol table info available.
#5 0x0817c3f3 in ?? ()
No symbol table info available.
#6 0x08144c2e in ?? ()
No symbol table info available.
#7 0x080914e8 in BlockHandler ()
No symbol table info available.
#8 0x08131714 in WaitForSomething ()
No symbol table info available.
#9 0x0808ceb8 in Dispatch ()
No symbol table info available.
#10 0x08072515 in main ()
No symbol table info available.
(gdb) quit
A debugging session is active.

        Inferior 1 [process 2252] will be detached.

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