I tried the patched version from the PPA and it fixes the problem for me. No more black screen after restarting lightdm
-- 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 xserver-xorg-video-intel package in Ubuntu: Triaged 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/ubuntu/+source/xserver-xorg-video-intel/+bug/1501941/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
