Bug 23516 (_UsUrPeR_) - video artifacts in Intel 945GSE (atom chipset) dual monitor VGA output
Summary: video artifacts in Intel 945GSE (atom chipset) dual monitor VGA output
Alias: _UsUrPeR_
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Gordon Jin
QA Contact: Xorg Project Team
URL: https://bugs.launchpad.net/ubuntu/+bu...
Keywords: NEEDINFO
Depends on:
Reported: 2009-08-25 12:28 UTC by Joel Sass
Modified: 2009-08-31 05:21 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Description Joel Sass 2009-08-25 12:28:11 UTC
Testing Karmic Koala's newest release with a http://www.disklessworkstations.com 1520 term via LTSP. The Intel drivers work properly with both DVI and VGA outputs run singularly. However, once running dual monitors, strange artifacting can be seen on the VGA output monitor. Once past LDM, the problem becomes more apparent. Upon opening a window, or even moving the mouse, the VGA output monitor's wallpaper appears to "tear", causing the monitor to be unusable while the mouse is moving. It appears to only be mouse movements and Xwindows changes that cause it. Working in a terminal is fine, but as a test I tried out the game Iagno (Othello/reversi). It caused the artifacts to appear whenever a piece was moved. Quite a different result from Nibbles, which caused no issues whatsoever.
Comment 1 Jesse Barnes 2009-08-25 18:15:22 UTC
I think this is a dupe of https://bugs.freedesktop.org/show_bug.cgi?id=23368, can you try the patch in that bug and confirm?
Comment 2 Joel Sass 2009-08-31 05:21:11 UTC
Incongruent kernel versions between ltsp server and ltsp image were to blame. ltsp-kernel-update fixed the issues 

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