desktop-packages team mailing list archive

[Jani-nikula <1501941@xxxxxxxxxxxxxxxxxx>]

(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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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).

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