The path was wrong in #6 (I forgot the /.config/ Copying
/home/<user>/.config/monitors.xml to /var/lib/lightdm/.config/monitors.xml fixes this issue for me (see image attached). Btw.: After upgrade to new HWE/Xorg I had to resize my monitors to get rid of similar situations for the gnome session itself. That could be done by reajusting resolution two times (go for wrong resolution and back to right resolution). But that could be done via GUI (system settings/displax devices). Be that a bug in itself or not, I think it is not convenient, at least. However, the GUI setting did not affect lightdm monitor settings. Only copying monitors.xml to /var/lib/lightdm/.config/ did. For lightdm, I think this is a bug, just because it requires non-GUI user interaction. Average users should not be tricked into such situations. ** Attachment added: "CIMG1107.JPG" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1665853/+attachment/4821679/+files/CIMG1107.JPG -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1665853 Title: Gnome Flashback: Could not assign CRTC to outputs, ignoring configuration Status in gnome-flashback package in Ubuntu: Invalid Status in lightdm package in Ubuntu: New Status in xorg package in Ubuntu: New 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-flashback/+bug/1665853/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
