I think I've found the reason, but not the solution. I've put a Section "Monitor" Identifier "eDP-1" Option "Rotate" "normal" EndSection
into /etc/X11/xorg.conf, which did not help. but then I noticed that this notebook comes with a flippable screen made for Win10 to be used as a tablet. When rotating the Screen, Xorg keeps turning the screen, but always wrong. So Xorg is technically able to handle the changing screen orientiation when turning the notebook upside down, but it always chooses wrong rotation settings. Translation of screen oriention into xrandr settings is wrong. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1895412 Title: X11 screen rotated To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1895412/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
