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Ubuntu 16.04 (xenial) reached end-of-standard-support on April 29, 2021.
I'm setting the status of this bug to 'Incomplete' as it's not seen any
activity for some time. If this is still an issue when using a currently
maintained release of Ubuntu then please let us know which one(s)
otherwise this bug report can be left to expire in approximately 60 days
time.
** Changed in: lightdm (Ubuntu)
Status: New => Incomplete
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1665853
Title:
HWE 16.04.2: Login Screen goes partially black after upgrade (Dual
Screen)
Status in gnome-flashback package in Ubuntu:
Invalid
Status in lightdm package in Ubuntu:
Incomplete
Status in xorg package in Ubuntu:
Incomplete
Bug description:
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)
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