(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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501941 Title: Screen turned off after X server exits To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1501941/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs