Bug 25800

Summary:

[915GM] display flickers on "xrandr -q"

Product:

xorg

Reporter:

John Lindgren <john.lindgren>

Component:

Driver/intel

Assignee:

Carl Worth <cworth>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

minor

Priority:

medium

CC:

bugzilla, matt, paulepanter

Version:

7.4 (2008.09)

Hardware:

x86 (IA32)

OS:

Linux (All)

URL:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=551256

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
X log	none
Kernel log	none
X config	none
Video of the symptoms	none

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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