Gnome Flashback after upgrading to HWE-Kernel/HWE-Xorg: Could not assign CRTC to outputs, ignoring configuration

[Thomas Mayer]

After a reboot, syslog reports:

Feb 18 20:16:52 lat61 gnome-session[3090]: ** (gnome-flashback:3185): WARNING **: Could not assign CRTC to outputs, ignoring configuration
Feb 18 20:16:52 lat61 gnome-session[3090]: ** (gnome-flashback:3185): WARNING **: Could not make default configuration for current output layout, leaving unconfigured

From the perspective of a user, I can't see anything behaving wrong for the moment. Dual screen works correctly (Had to reconfigure screen resolution after hwe upgrades).

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-flashback 3.18.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sat Feb 18 20:34:35 2017
InstallationDate: Installed on 2014-11-29 (812 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: gnome-flashback
UpgradeStatus: Upgraded to xenial on 2016-06-15 (248 days ago)

[Alberts Muktupāvels (muktupavels)]

Do you see same warnings with 18.04?

[Launchpad Janitor (janitor)]

[Expired for gnome-flashback (Ubuntu) because there has been no activity for 60 days.]