Bug 25800 - [915GM] display flickers on "xrandr -q"
Summary: [915GM] display flickers on "xrandr -q"
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: 7.4 (2008.09)
Hardware: x86 (IA32) Linux (All)
: medium minor
Assignee: Carl Worth
QA Contact: Xorg Project Team
URL: http://bugs.debian.org/cgi-bin/bugrep...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-12-26 09:08 UTC by John Lindgren
Modified: 2010-04-08 11:52 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:

Attachments
X log (57.76 KB, text/plain)
2009-12-26 09:09 UTC, John Lindgren 		no flags Details
Kernel log (45.94 KB, text/plain)
2009-12-26 09:09 UTC, John Lindgren 		no flags Details
X config (970 bytes, application/octet-stream)
2009-12-26 09:09 UTC, John Lindgren 		no flags Details
Video of the symptoms (854.35 KB, video/x-msvideo)
2009-12-26 09:11 UTC, John Lindgren 		no flags Details
View All

Description John Lindgren 2009-12-26 09:08:18 UTC 
This is a Dell Inspiron 1200 laptop with an Intel 915GM graphics chip.  I get a quick flicker on the LCD panel whenever I run "xrandr -q".  It appears the whole screen is shifted a few inches to the right and the right edge wrapped around to the left edge for a split second.

Debian testing
Linux 2.6.30-2-686
xserver-xorg 1:7.4+4
xserver-xorg-video-intel 2:2.9.1-1
Comment 1 John Lindgren 2009-12-26 09:09:07 UTC 
Created attachment 32298 [details]
X log
Comment 2 John Lindgren 2009-12-26 09:09:29 UTC 
Created attachment 32299 [details]
Kernel log
Comment 3 John Lindgren 2009-12-26 09:09:52 UTC 
Created attachment 32300 [details]
X config
Comment 4 John Lindgren 2009-12-26 09:11:46 UTC 
Created attachment 32301 [details]
Video of the symptoms
Comment 5 Paul Menzel 2009-12-26 16:54:56 UTC 
This is reported in the Debian BTS as Bug#551256 [1] as noted in the URL field.

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=551256
Comment 6 Matthew Cox 2010-01-01 00:06:46 UTC 
I have the same problem on an Acer 1810T. On my system, after login or xrandr -q, every window seems to flicker.

Display hardware:
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07)

xrandr -q output:
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 256mm x 144mm
   1366x768       60.0*+
   800x600        60.3  
   640x480        59.9  
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)

Running kernel 2.6.32 (Debian), Intel DDX driver 2.9.1, and X server 1.6.5.
Comment 7 ykzhao 2010-04-08 07:51:16 UTC 
Can you try the 2.6.33 kernel and see whether the issue still exists?

Thanks.
Comment 8 John Lindgren 2010-04-08 07:58:45 UTC 
Unfortunately I don't have the laptop with the 915GM chip any more. (Bought a newer one with an ATI card.)
Comment 9 Matthew Cox 2010-04-08 11:52:09 UTC 
I forgot that I contrib'd to this bug. 2.6.33 fixed it for me. Thanks for your work.

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