(In reply to Robert Ancell from comment #1)
> We are currently working around this issue in Ubuntu 15.04 by reverting that
> one commmit.
That one commit being
commit 7d9a74622e5a936e4860fcef8358619bf59adae8
Author: Chris Wilson <email address hidden>
Date: Mon Jun 15 14:16:34 2015 +0100
sna: Be robust in handling DPMS failures
i.e. not a kernel commit. Apparently Chris' conclusion was that the
kernel returns an error on DPMS.
Please attach dmesg with drm.debug=14 module parameter, all the way from
boot to reproducing the problem.
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1501941
Title:
Screen turned off after X server exits
Status in xf86-video-intel:
Incomplete
Status in xserver-xorg-video-intel package in Ubuntu:
Fix Released
Bug description:
When the X server exits, the screen turns off and doesn't seem to re-
enable. The system is still running (i.e. can SSH in).
To reproduce:
1. Log into a session
2. Switch to the greeter (using indicators or running "dm-tool
switch-to-greeter" from a terminal")
3. Log back into session
Expected result:
You return to the session
Observed result:
Screen goes black
This appears to be an issue in the Intel drivers, it occurs with the
current wily (2:2.99.917+git20150808-0ubuntu2). It does not occur when
downgrading to the vivid version (2:2.99.917-1~exp1ubuntu2.2 with some
patches to compile in wily).
To manage notifications about this bug go to:
https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1501941/+subscriptions
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