I think I found a workaround: an init-script, that removes monitors.xml and monitors.xml.backup on shutdown and reboot.
Start Gedit as root. sudo gedit Copy the following lines #!/bin/sh rm /home/USERNAME/.config/monitors.xml rm /home/USERNAME/.config/monitors.xml.backup rm /var/lib/lightdm/.config/monitors.xml rm /var/lib/lightdm/.config/monitors.xml.backup exit 0 Exchange USERNAME with your own and save the script in /etc/init.d. File-name doesn't matter. I called it "orientation". After that make the script executable. sudo chmod +x /etc/init.d/orientation And create a link to the script, so it gets executed on shutdown an reboot. sudo update-rc.d orientation start 1 0 6 . -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1316901 Title: Wrong screen rotation at login To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1316901/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs