Public bug reported:
[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.
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: High
Assignee: Maarten Lankhorst (mlankhorst)
Status: Confirmed
** Tags: trusty utopic vivid
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: (unassigned) => Maarten Lankhorst (mlankhorst)
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided => High
** Tags added: trusty utopic vivid
--
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which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1410238
Title:
Rotating external display with optimus results in corruption
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