[present + prime] HDMI output (nouveau) broken
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Won't Fix
|
Low
|
Unassigned |
Bug Description
I recently upgraded my system to Ubuntu 14.10.
Now when testing HDMI, I hit some bug.
My system is an optimus laptop.
The HDMI is connected to a nvidia card.
Now the HDMI has signal, and while logging in (so when Xorg is starting) I can shortly move my cursor over the external display. But when login is complete, the external display is 1 artifact, and doesn't show any updates anymore.
So I started bisecting the version from 14.10 to 14.04 (where it was working).
And I found out the following commit caused the issue:
commit 975b9798be77b30
Author: Chris Wilson <email address hidden>
Date: Wed May 21 08:58:24 2014 +0100
sna: Add support for Present
Signed-off-by: Chris Wilson <email address hidden>
Now I recompiled the intel driver without the commit, and that fixes the issue.
Another option is to use --disabled-dri3.
My hardware
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev a1)
The driver I use for the nvidia card is nouveau.
Changed in xserver-xorg-video-intel: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in xorg (Ubuntu): | |
status: | Incomplete → Won't Fix |
I recently upgraded my system to Ubuntu 14.10.
Now when testing HDMI, I hit some bug.
My system is an optimus laptop.
The HDMI is connected to a nvidia card.
Now the HDMI has signal, and while logging in (so when Xorg is starting) I can shortly move my cursor over the external display. But when login is complete, the external display is 1 artifact, and doesn't show any updates anymore.
So I started bisecting the version from 14.10 to 14.04 (where it was working).
And I found out the following commit caused the issue: cbed485583d0ccb 48318708f7
commit 975b9798be77b30
Author: Chris Wilson <email address hidden>
Date: Wed May 21 08:58:24 2014 +0100
sna: Add support for Present
Signed-off-by: Chris Wilson <email address hidden>
Now I recompiled the intel driver with --disabled-dri3, and that fixes the issue also.
My hardware
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev a1)
The driver I use for the nvidia card is nouveau.