Bug 13500

Summary: External display turns off randomly
Product: xorg Reporter: Andreas Kloeckner <inform>
Component: Driver/intelAssignee: Hong Liu <hong.liu>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86 (IA32)   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Log file
none
config none

Description Andreas Kloeckner 2007-12-03 09:42:35 UTC 
Ever since I upgraded to Debian's xserver-xorg-video-intel 2.2.0-1, my external VGA display turns off randomly while in X. I use compiz. This issue seems to occur more frequently while playing back Flash video, but other workloads (gvim) cause it, too. Switching to console and trying Fn+F7 (BIOS output switch) does not manage to revive the external display, and neither does restarting the X server. Only a full reboot helps. :-(

--- System information. ---
Architecture: i386
Kernel:       Linux 2.6.23

--- Package information. ---
Depends                  (Version) | Installed
==================================-+-=============
libc6                 (>= 2.6.1-1) | 2.7-2
libdrm2                 (>= 2.3.0) | 2.3.0-4
xserver-xorg-core       (>= 2:1.4) | 2:1.4-3
Comment 1 Andreas Kloeckner 2007-12-03 09:43:11 UTC 
Created attachment 12916 [details]
Log file
Comment 2 Andreas Kloeckner 2007-12-03 09:43:41 UTC 
Created attachment 12917 [details]
config
Comment 3 Andreas Kloeckner 2007-12-03 09:45:30 UTC 
I should add that this is on an i915 in a Thinkpad R52.
Comment 4 Andreas Kloeckner 2007-12-03 10:02:43 UTC 
It seems that the retrace signals are generated properly--the external LCD knows what the resolution and refresh rate are supposed to be--there are just no pixels shown.

Note that the bug occurs only sporadically--sometimes it takes an hour for it to show, sometimes only a few minutes.
Comment 5 Michael Fu 2007-12-03 23:17:02 UTC 
could you try to turn off framebuffer compression and retest? I'm asking because it might be a dup of bug# 13418...

a log file with "modedebug" option turn on will also be helpful.. thanks.
Comment 6 Andreas Kloeckner 2007-12-18 07:18:11 UTC 
This hasn't happened in a while, consider it fixed for now.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.