Public bug reported:
if the display is sent to sleep it won't wake up. If I go to tty1 or
tty2 I'm pulled back to tty7 (?) within seconds.
sometimes if I ctrl-alt-del I'm sent back to the login screen and from
there I can resume the session.
everything was working fine with my previous (1920x1080) display, but
since I switched to a 3840x2160 display the only reliable solution to
get the computer back from blanking is pressing the power button. I can
then see the shutdown "splash" and after powering it back again
everything is back to normal. until it blanks the screen again obviusly
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon May 22 19:16:43 2017
InstallationDate: Installed on 2015-12-27 (512 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2016-04-27 (389 days ago)
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1692671
Title:
intel driver fails to reenable display
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