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The screen is now 1024x768 (4:3) resolution, and I can't change that, when I turn on my computer a boot error shows up, maybe this two problems are matches, but I'm not too sure...

(ACPI PCC probe failed)

Than my computer turn on with this low res. and I can't even change it on the NVIDIA settings, because when I change the "ViewPortIn" to 1920x1080, the panning change, but that's not a problem, the "ViewPortOut" not changes, and that's the problem, first I tried to change it manually, but when I press to a another box, or I hit apply than it change back the numbers again, so I have no idea how to fix this problem.

(I used X.Org X server driver, and that problem wasn't there, I could run the screen in 1920x1080!)

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  • Please edit your question and add output of lspci -k | grep -EA2 'VGA|3D' terminal command.
    – Pilot6
    Oct 7, 2015 at 18:29
  • Does this command work ? notice how it is the commands for nvidia-settings nvidia-settings --assign CurrentMetaMode="DFP-0: 1920x1080_60 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0, Panning 1920x1080}"
    – Mark Kirby
    Oct 7, 2015 at 18:45

1 Answer 1

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The easiest thing to do is add the resolution using xrandr - this is a good guide. You would then need to add the xrandr configurations to a startup file, so that you'll get your desired resolution upon reboot/startup:

  • Create a bash script, xrandr.sh for example, and place your xrandr commands into it:

    #!/bin/bash
    sudo xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
    sudo xrandr --addmode Virtual1 1920x1080_60.00
    xrandr --output Virtual1 --mode 1920x1080_60.00

  • Make the script executable with chmod +x xrandr.sh

  • Search for "Startup Applications" in the dash, run it, and add the script as a startup application.

The commands will now run every time you log into your account.

OR you can go the easy way and use a program that does the above for you - ResolutionX.

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  • How can I make the script executable with chmod +x xrandr.sh Mar 18, 2016 at 17:44
  • @BenceDomokos enter that into the terminal
    – TellMeWhy
    Mar 19, 2016 at 12:17

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