Ubuntu
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Ubuntu (or Xwm) reboots arbitrarily

Asked by Kent McNaughton

Three or four times in the past two weeks or so, Ubuntu--or the window manager would quit, and give me a black screen--as in recovery mode. I'd see a quick message on the black screen--something about a network connection. It was gone too fast to read.

A tail of user.log and syslog from /var/log follow. (The syslog entry previous to this first datestamp was 45 min before the error).

Jan 9 20:07:14 tikabel bonobo-activation-server (kent-4022): could not associate with desktop session: Failed to connect to socket /tmp/dbus-OV9J7OriG2: Connection refused
Jan 9 20:07:28 tikabel pulseaudio[4129]: pid.c: Stale PID file, overwriting.
Jan 9 20:07:33 tikabel pulseaudio[4129]: module-x11-xsmp.c: X11 session manager not running.
Jan 9 20:07:33 tikabel pulseaudio[4129]: module.c: Failed to load module "module-x11-xsmp" (argument: ""): initialization failed.
kent@tikabel:/var/log$ date
Sat Jan 9 20:14:12 EST 2010
kent@tikabel:/var/log$ tail syslog
Jan 9 20:07:07 tikabel kernel: [16652.956323] [drm] DAC-6: set mode 1280x1024 19
Jan 9 20:07:08 tikabel acpid: client connected from 3962[0:0]
Jan 9 20:07:09 tikabel kernel: [16655.130749] [drm] DAC-6: set mode 1152x864 1c
Jan 9 20:07:14 tikabel bonobo-activation-server (kent-4022): could not associate with desktop session: Failed to connect to socket /tmp/dbus-OV9J7OriG2: Connection refused
Jan 9 20:07:25 tikabel gdm-session-worker[4020]: pam_sm_authenticate: Called
Jan 9 20:07:25 tikabel gdm-session-worker[4020]: pam_sm_authenticate: username = [kent]
Jan 9 20:07:27 tikabel gdm-session-worker[4042]: Error attempting to add filename encryption key to user session keyring; rc = [1]
Jan 9 20:07:28 tikabel pulseaudio[4129]: pid.c: Stale PID file, overwriting.
Jan 9 20:07:33 tikabel pulseaudio[4129]: module-x11-xsmp.c: X11 session manager not running.
Jan 9 20:07:33 tikabel pulseaudio[4129]: module.c: Failed to load module "module-x11-xsmp" (argument: ""): initialization failed.
=================================================================
I'm running an updated 9.10 Karmic on a two-year-old Celeron D w/2MB RAM and a (nearly full) 80GB hard drive. Video is the default integrated driver from the Asus P5GZ-MX motherboard.

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Kent McNaughton
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marcobra (Marco Braida) (marcobra) said : 		#1

Please be sure your RAM memory is good:

To test your pc RAM memory chips:

- boot your pc press ESC when you see the GRUB row and jump to step "**"

or

- boot from Ubuntu live cd main menu and at first showed menu and

**) select the item "Memory test" to test your pc ram memory

Please run memory test for many hours or stop it and replace your memory chip if you get errors (the errors usually are rows in red colour)

If you have more than one memory chips plugged on your motherboard, to know which is the damaged
chip please run the memory test with only one chip plugged a time.

Hope this helps

Revision history for this message
Kent McNaughton (kent-panamanow) said : 		#2

Thank you for the help. I ran the MEM86+ test overnight. No errors. Left it going during the day but the computer had died when I next checked. I had just replaced a battery in the UPS as it wasn't giving me failover on short AC power outages. It's failed twice today. I think the UPS is the culprit. Thanks again, Marcobra