I’m running Ubuntu on a dual boot iMac in a college lab, this has a GeForce GT 755M. This is a Ubuntu 18.04 /kernel 5.4.0-81-generic with the nvidia driver 460.91.03 installed through apt. Mokutil reports secure boot as not available. I think I have checked most of the obvious issues from reading other threads.
I am able to run the nvidia-settings software and configure res and mirrored settings, however I’m struggling to make these settings save and persist. I have tried creating the .nvidia-settings-rc, I’m unable to load this file manually on the command line with the nvidia-settings command and haven’t been able to find anything that works. The xorg file doesn’t manage to save through the software too, and manually saving this in place doesn’t seem to work either.
Any advice on how to get these settings to persist would be great as I ideally need the screens to mirror so the machine can do demonstrations with the projector attached to the machine.
Thanks in advance