I have also the same problem. With two monitors, I change the monitor positions (left/right) in the nvidia-settings tool (started with sudo) and write it to the X Configuration file (/etc/X11/xorg.conf). The file is changed, but the monitor positions are reset after next reboot.
I wondered why there is only one Monitor section in the xorg.conf file, but the gui of nvidia-settings mentions two monitors (one connected per DVI, one per DP at my Geforce GTX 1060). I can confirm that the "Package xorg-server was not found " error vanished after installing xserver-xorg-dev, but the following error is still present: thomas@deepthought2:~$ sudo /usr/bin/nvidia-settings (nvidia-settings:7845): GLib-GObject-CRITICAL **: 09:17:21.642: g_object_unref: assertion 'G_IS_OBJECT (object)' failed ** Message: 09:17:21.764: PRIME: No offloading required. Abort ** Message: 09:17:21.764: PRIME: is it supported? no My setup: Ubuntu 20.04 Nvidia 450.80.02 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-settings in Ubuntu. https://bugs.launchpad.net/bugs/1822937 Title: NVIDIA settings won't write to /etc/xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1822937/+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
