Can't change resolution



  • Hello!
    I've been digging through tons of info on this, but couldn't succeed.
    I've got an old pc ASRock g41m-vs3 and I've got it connected to a CRT TV via VGA to Video converter.
    I've tried following this guide Change-display-resolution-on-x86---x86_64 to no avail.
    I try to use xrandr but it always says "Can't open display"
    I thought it could be cause by my videosignal converter and hooked it up with a monitor, but the result was still the same.
    I just want to set resolution to something lower than 1024x768, like 640x480 so I could have a chance of running PS1 games.
    Any ideas? Suggestions?


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