Re: [gdm-list] GDM crashes ubuntu 10.04

[Brian Cameron <brian cameron oracle com>]

On 05/ 9/10 12:45 PM, dbclinton wrote:
> Hi,
> I recently installed Edubuntu 10.04 (Gnome 2.30.0) and have experienced
> half a dozen or so crashes (screen goes black, posts strange color
> patterns and monitor loses signal - cycles this way indefinitely)
> sometimes unassociated with any user activity at all.
> The pre-crash logs all share references to GDM and, particularly, to a
> file called custom.conf. Here's a typical example:
>
> May  5 15:02:55 rishon gdm-simple-slave[1655]: WARNING: Unable to load
> file '/etc/gdm/custom.conf': No such file or directory

Note that a missing custom.conf file does not cause GDM to crash or have
any problems.  If there is no custom.conf file, then GDM simply uses the
system default configuration.  With GDM 2.21 and later, the system
default configuration is stored in GConf, while in GDM 2.20 and earlier,
the system defaults are stored in /usr/share/gdm/defaults.conf.

Looking at your syslog, it looks like your system is having some serious
kernel problems, which are probably more related to the crash than
anything that GDM is doing.  Reviewing your logs, I don't see anything
that indicates a GDM failure.  Nothing that GDM does should cause a
system crash.  I would guess that a kernel or driver bug is more likely
the culprit.

From your description it sounds like your system is crashing at random
times, which I assume means that sometimes your system crashes after
authentication and after your user session starts.  GDM does very little
after the user session starts, and it is very rare for crashes after the
user session starts to be related to GDM at all.  There are some
exceptions (such as when using a multi-display environment such as a
terminal server when a crash when logging into one display can cause
other displays to crash, but such problems tend to be very isolated to
particular and unusual configurations).

Brian


> In fact, there is no file custom.conf - but nor is there on a stable
> Ubuntu 10.04 install on a different computer in the house. I borrowed
> and renamed a gdm.conf-custom file from a working ubuntu 9.04 (Gnome
> 2.26.1) that I have installed on a laptop, but I don't know if that will
> do the job.
> Does anyone have any idea what's going wrong and how I can fix this?
> Here are some log extracts:
> =================
> syslog:
> May  9 00:46:53 rishon kernel: [11647.116012]
> [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
> May  9 00:46:53 rishon kernel: [11647.116029] render error detected,
> EIR: 0x00000000
> May  9 00:46:53 rishon kernel: [11647.117079] [drm:i915_do_wait_request]
> *ERROR* i915_do_wait_request returns -5 (awaiting 532213 at 532208)
> May  9 00:46:55 rishon kernel: [11649.480018] [drm:i915_gem_idle]
> *ERROR* hardware wedged
> May  9 00:47:06 rishon gdm-simple-slave[3627]: WARNING: Unable to load
> file '/etc/gdm/custom.conf': No such file or directory
> May  9 00:47:06 rishon pulseaudio[3624]: pid.c: Stale PID file,
> overwriting.
> May  9 00:47:07 rishon bonobo-activation-server (dbclinton-3623): could
> not associate with desktop session: Failed to connect to
> socket /tmp/dbus-gKShAWkQGC: Connection refused
> May  9 00:47:08 rishon pulseaudio[3624]: main.c: Unable to contact
> D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to
> socket /tmp/dbus-gKShAWkQGC: Connection refused
> May  9 00:47:08 rishon acpid: client connected from 3632[0:0]
> May  9 00:47:08 rishon acpid: 1 client rule loaded
> May  9 00:47:08 rishon pulseaudio[3641]: pid.c: Daemon already running.
> May  9 00:47:10 rishon kernel: [11664.158445]
> [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good
> luck
> May  9 00:47:10 rishon kernel: [11664.492012]
> [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
> May  9 00:47:10 rishon kernel: [11664.492022] render error detected,
> EIR: 0x00000000
> May  9 00:47:10 rishon kernel: [11664.492916] [drm:i915_do_wait_request]
> *ERROR* i915_do_wait_request returns -5 (awaiting 532215 at 532208)
> May  9 00:47:12 rishon kernel: [11666.568015] [drm:i915_gem_idle]
> *ERROR* hardware wedged
> May  9 00:47:12 rishon gdm-simple-slave[3646]: WARNING: Unable to load
> file '/etc/gdm/custom.conf': No such file or directory
> May  9 00:47:12 rishon acpid: client 3632[0:0] has disconnected
> ====================
> auth.log:
> May  9 00:46:58 rishon gnome-keyring-daemon[1476]: dbus failure
> unregistering from session: Connection is closed
> May  9 00:46:59 rishon gnome-keyring-daemon[1476]: dbus failure
> unregistering from session: Connection is closed
> May  9 00:47:00 rishon polkitd(authority=local): Unregistered
> Authentication Agent for session /org/freedesktop/ConsoleKit/Session2
> (system bus name :1.33, object
> path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.utf8)
> (disconnected from bus)
> May  9 00:47:02 rishon gdm-session-worker[1370]: pam_unix(gdm:session):
> session closed for user dbclinton
> ====================
> messages log:
> May  9 00:47:06 rishon pulseaudio[3624]: pid.c: Stale PID file,
> overwriting.
> May  9 00:47:07 rishon bonobo-activation-server (dbclinton-3623): could
> not associate with desktop session: Failed to connect to
> socket /tmp/dbus-gKShAWkQGC: Connection refused
> May  9 00:47:08 rishon pulseaudio[3624]: main.c: Unable to contact
> D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to
> socket /tmp/dbus-gKShAWkQGC: Connection refused
> May  9 00:52:32 rishon kernel: Kernel logging (proc) stopped.
> ===============
>
> Thanks for your great work!
>
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