I have a problem. I have a lapop with an Nvidia card and an Intel one
While I am using the Nvidia one (using PRIME profiles) I cannot change the display resolution using xrandr in terminal. All it does is that the display goes black for a second then back to the native resolution. However, when using the Intel card it works without an issue.
This is an issue for me because I play a lot of old games using Wine and most of them have very low resolutions and so, when using Nvidia, they are displayed on the top-left part of the screen, instead of being stretched to fill the whole screen like they do when using the Intel card (because the screen resolution will change to that of the game)
I also noticed that changing the resolution through System Settings -> Display works on both cards but it dosen't help much...
If I could get xrandr to change the resolution on the Nvidia card then those games will work or if not then I could make a script to do it when the game launches and change back to the native one when it's closed.
My OS is Ubuntu 14.04 x64 and I use the up-to-date Nvidia proprietary stable drivers. It's a laptop if that matters
EDIT: I just noticed that if I connect an external monitor (VGA1) I can change the resolution just fine on either monitor... and the game now runs fullscreen... but as soon as I disconnect it the issue comes back :(