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[slavik112211 <slavik2121@xxxxxxxxx>]

Have the same problem. Pretty annoying must admit.

It seems like its because of something in KDE 4.4 as i didnt had this
before as i was using gnome. System was upgraded from Ubuntu 9.04 (one
year of gnome without the bug) to ubuntu 9.10 and kde 4.4.

The bug is pretty rare, around 1 time a day.

output from syslog:

2010-03-16 15:20:41	acer-aspire-5630	wpa_supplicant[613]	CTRL-EVENT-SCAN-RESULTS 
2010-03-16 15:21:33	acer-aspire-5630	avahi-daemon[540]	Invalid query packet.
2010-03-16 15:22:41	acer-aspire-5630	avahi-daemon[540]	last message repeated 7 times
2010-03-16 15:22:41	acer-aspire-5630	wpa_supplicant[613]	CTRL-EVENT-SCAN-RESULTS 
2010-03-16 15:24:05	acer-aspire-5630	kdm[1272]	X server for display :0 terminated unexpectedly
2010-03-16 15:24:06	acer-aspire-5630	console-kit-daemon[548]	GLib-GObject-WARNING: instance with invalid (NULL) class pointer
2010-03-16 15:24:06	acer-aspire-5630	console-kit-daemon[548]	GLib-GObject-CRITICAL: g_signal_emit_valist: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
2010-03-16 15:24:06	acer-aspire-5630	console-kit-daemon[548]	GLib-GObject-CRITICAL: g_object_unref: assertion `G_IS_OBJECT (object)' failed
2010-03-16 15:24:06	acer-aspire-5630	acpid	client 1285[0:0] has disconnected
2010-03-16 15:24:06	acer-aspire-5630	acpid	client connected from 8527[0:0]
2010-03-16 15:24:07	acer-aspire-5630	acpid	client connected from 8527[0:0]
2010-03-16 15:24:10	acer-aspire-5630	kdm_greet[8548]	Cannot load /usr/share/kde4/apps/kdm/faces/.default.face: No such file or directory


I wanted to show all around that record - 
2010-03-16 15:24:05	acer-aspire-5630	kdm[1272]	X server for display :0 terminated unexpectedly
(so, it seems like the problem really is that server is falling, and nothing to do with kde)

There is also some important stuff in x.org log:
-rw-r--r-- 1 root              root   22955 2010-03-16 15:27 Xorg.0.log
-rw-r--r-- 1 root              root   16407 2010-03-16 15:24 Xorg.0.log.old
(so it seems that Xorg.0.log.old was created right after/before the crash)

this was found in the end of Xorg.0.log.old:

(**) Logitech USB Optical Mouse: (accel) filter stage 0: 20.00 ms
(**) Logitech USB Optical Mouse: (accel) set acceleration profile 0
(II) Logitech USB Optical Mouse: initialized for relative axes.
(WW) AT Translated Set 2 keyboard: unable to handle keycode 434

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x3b) [0x8133d6b]
1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7d35]
2: [0xc17400]
Saw signal 11.  Server aborting.
(II) UnloadModule: "synaptics"
(II) UVC Camera (046d:09b0): Close
(II) UnloadModule: "evdev"
(II) AT Translated Set 2 keyboard: Close
(II) UnloadModule: "evdev"
(II) Sleep Button: Close
(II) UnloadModule: "evdev"
(II) Video Bus: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Macintosh mouse button emulation: Close
(II) UnloadModule: "evdev"
(II) Logitech USB Optical Mouse: Close
(II) UnloadModule: "evdev"
 ddxSigGiveUp: Closing log

Also, have to say that i'm using nvidia proprietary driver.

I have also created the apport-collect report with all the
hardware/software info about my box.


** Attachment added: "Xorg.0.log.old"
   http://launchpadlibrarian.net/41021916/Xorg.0.log.old

-- 
X session log out unexpectedly
https://bugs.launchpad.net/bugs/526572
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