This bug was fixed in the package xserver-xorg-video-intel - 2:2.99.917+git20150808-0ubuntu3
--------------- xserver-xorg-video-intel (2:2.99.917+git20150808-0ubuntu3) wily; urgency=medium
* debian/patches/revert-dpms-fix.patch: - Revert a DPMS change that causes the screen to turn off when returning from a greeter (LP: #1501941)
-- Robert Ancell <email address hidden> Tue, 06 Oct 2015 14:25:00 +1300
This bug was fixed in the package xserver- xorg-video- intel - 2:2.99. 917+git20150808 -0ubuntu3
--------------- xorg-video- intel (2:2.99. 917+git20150808 -0ubuntu3) wily; urgency=medium
xserver-
* debian/ patches/ revert- dpms-fix. patch:
- Revert a DPMS change that causes the screen to turn off when returning
from a greeter (LP: #1501941)
-- Robert Ancell <email address hidden> Tue, 06 Oct 2015 14:25:00 +1300