Also, this doesn’t look like a bug of xrandr. I got the error first when trying to play Tuxracer. It seems that whenever an 800x600 mode (640x480 works fine) is requested without specifying the refresh rate, X makes the wrong choice.
Also, this doesn’t look like a bug of xrandr. I got the error first when trying to play Tuxracer. It seems that whenever an 800x600 mode (640x480 works fine) is requested without specifying the refresh rate, X makes the wrong choice.