I can confirm this. I have fresh install of Ubuntu 17.04 and nVidia card with 2 monitors, one rotated. I can configure it correctly in gnome-flashback and generate correct xorg.conf in nvidia-settings, but the rotated secondary monitor is selected as primary on login screen and is not rotated. I "fixed" the annoyance by autologin...
There is also a tip to use /etc/lightdm/lightdm-gtk-greeter.conf and put in [greeter] active-monitor=0 (probably 1 in my case) but there is not such file and i am not sure where to put it. There seems are some workarounds using xrandr and startup scripts. It would be nice if this could work again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1673398 Title: A workaround for making a default monitor in multi monitor environment is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1673398/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs