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[Sensiva <Mohamed_saudi@xxxxxxxxxxx>]

Public bug reported:

It is happening again and again, after leaving my workstation up for
long time (3 days or more) and rebooting... gdm starts in low graphics
mode after showing an error of No Valid Modes. I have to shutdown and
disconnect the power plugs for about 15 minutes, then power up again, to
find everything is working fine.

This never happens with Debian, Fedora or Windows, only Karmic (I remember it happened many times during the days of Hardy)
My PC is Dell Optiplex 755 with Intel Q35 VGA , and HP monitor model hp p 1230. I am using Karmic amd64.

Further info attached
Thank you

ProblemType: Bug
Architecture: amd64
CheckboxSubmission: fe1df45febe5b83f3490d1fcfefd6d51
CheckboxSystem: 2a6f54df59af338184485e85cbcf0d32
Date: Fri Feb  5 08:37:45 2010
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/Xorg
MachineType: Dell Inc. OptiPlex 755
Package: xserver-xorg-core 2:1.6.4-2ubuntu4.1
ProcCmdLine: root=UUID=79d9f0cd-63ed-86b1-1de1-9e9297a4daa5 ro splash
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 LANGUAGE=en_US:en
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu10
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg-server
Uname: Linux 2.6.31-19-generic x86_64
XsessionErrors:
 (gnome-settings-daemon:2573): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:2573): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:2799): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (gnome-panel:2798): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window
dmi.bios.date: 09/10/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0GM819
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd09/10/2009:svnDellInc.:pnOptiPlex755:pvr:rvnDellInc.:rn0GM819:rvr:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 755
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
system:
 distro:             Ubuntu
 architecture:       x86_64kernel:             2.6.31-19-generic
xkbcomp:
 Error: command ['xkbcomp', ':0', '-w0', '-'] failed with exit code 1: Error:            Cannot open display ":0"
                   Exiting

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dell intel karmic optiplex q35 xorg

-- 
Rebooting after relatively long uptime, Xorg gives an error of No Valid Modes
https://bugs.launchpad.net/bugs/517417
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