Public bug reported:
I'm using ubuntu 16.04, up-to-date, HWE kernel 4.8.0-36-generic.
On dual screen setup, during system login, the first screen stretches
over a part of the second screen (about 25% of it), whereas the rest of
the second screen is black. Like this:
############ ############
# # #<<|.......#
# Login # #<<|.Black.#
# # #<<|.......#
############ ############
The part marked with "<<" is the rightest part of the background image
of the first screen. I've seen this after updating to xorg/xserver-
hwe-16.04, whereas installing the hwe kernel alone did not make this
happen.
Nevertheless, I can login and everything is fine again. Both screens
look as they should. (I had to reconfigure monitors once after updating
to xorg/xserver-hwe-16.04).
sylog shows:
Feb 18 06:27:03 lat61 gnome-session[3242]: ** (gnome-flashback:3340): WARNING
**: Could not assign CRTC to outputs, ignoring configuration
Feb 18 06:27:03 lat61 gnome-session[3242]: ** (gnome-flashback:3340): WARNING
**: Could not make default configuration for current output layout, leaving
unconfigured
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 07:46:46 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 (247 days ago)
** Affects: gnome-flashback (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1665853
Title:
Gnome Flashback: Could not assign CRTC to outputs, ignoring
configuration
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