This bug was fixed in the package xserver-xorg-video-intel -
2:2.99.910-0ubuntu1.4
---------------
xserver-xorg-video-intel (2:2.99.910-0ubuntu1.4) trusty-proposed; urgency=medium
[ Timo Aaltonen ]
* sna-fix-gen8-blt.diff
sna-tweak-alignment-constraints-on-gen8.diff
sna-add-more-checks-and-asserts-for-blt.diff:
- Fix GEN8 BLT with 4bit address. (LP: #1401788)
[ Maarten Lankhorst ]
* Fix regression with external displays on sna. (LP: #1405325)
* Fix rotating external display with optimus results in corruption.
- fix-sna-external-slave-rotation.patch (LP: #1410238)
-- Maarten Lankhorst <maarten.lankho...@ubuntu.com> Tue, 13 Jan 2015
17:14:19 +0100
** Changed in: xserver-xorg-video-intel (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1410238
Title:
Rotating external display with optimus results in corruption
Status in xserver-xorg-video-intel package in Ubuntu:
Fix Released
Status in xserver-xorg-video-intel source package in Trusty:
Fix Released
Status in xserver-xorg-video-intel source package in Utopic:
Fix Released
Bug description:
[Impact]
* Black screen when attempting to rotating external display in affected
configurations.
[Test Case]
* Run a system with a internal nvidia card, and 2 displays on the intel
card. (Usually LCD screen + external VGA/DVI screen.)
* Run xrandr --output <external> --rotate left
* Expect a normal, rotated screen.
* Bad behavior is a black screen.
[Regression Potential]
* Low, only affects the transformed case in optimus mode, but it will be
tested against !optimus config too.
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