Xorg is restarted sometimes after upgrading to Kubuntu 11.04

[Iñaki Baz Castillo]

Since the upgrade to Kubuntu 11.04 the X session is sometimes restarted (I assume due to some crash somewhere). Or worse, sometimes my laptop gets fully frozen after the X session has crashed and some errors are displayed in console (I cannot copy them as the system gets fully frozen).

It occurs once or twice a day. Never occured it with previous Kubuntu version (64 bits) in the same laptop.

I appreciate any guidance to provide useful debugging information.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-core 2:1.10.1-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: kwin
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.DP.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768
 edid-base64: AP///////wAw5GsCAAAAAAATAQOAIhN4CsElnV9bmycZUFQAAAABAQEBAQEBAQEBAQEBAQEBEhtWeFAADjAgICQAWMIQAAAZAAAAAAAAAAAAAAAAAAAAAAAAAAAA/gBMRyBEaXNwbGF5CiAgAAAA/ABMUDE1NldIMi1UTFJBAAU=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Mon May 23 10:54:14 2011
DistUpgraded: Log time: 2011-05-12 11:51:08.318222
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 virtualbox-ose, 4.0.4, 2.6.38-8-generic, x86_64: installed
 virtualbox-ose, 4.0.4, 2.6.35-28-generic, x86_64: installed
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1526]
   Subsystem: Hewlett-Packard Company Device [103c:1526]
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Hewlett-Packard HP 620
ProcEnviron:
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=cf9aeed4-b24b-4f72-a08d-49b39a5b9a13 ro quiet splash vt.handoff=7
ProcKernelCmdLine_: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=cf9aeed4-b24b-4f72-a08d-49b39a5b9a13 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg-server
UpgradeStatus: Upgraded to natty on 2011-05-12 (10 days ago)
dmi.bios.date: 02/25/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PVI Ver. F.00
dmi.board.name: 1526
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.0D
dmi.chassis.asset.tag: CNU0143XV1
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PVIVer.F.00:bd02/25/2010:svnHewlett-Packard:pnHP620:pvrF.00:rvnHewlett-Packard:rn1526:rvrKBCVersion71.0D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP 620
dmi.product.version: F.00
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Bryce Harrington (bryce)]

For crashes you need to provide a backtrace when filing bug reports - see http://wiki.ubuntu.com/X/Backtracing for guidance in how to collect them.

The logs you attached don't show an X crash, but maybe you had rebooted a few times since the crash. A common X crash on natty is bug #774978. Without seeing a backtrace for your issue I'd have to guess it's just a dupe of that bug.