i have this issue coming up in my terminal window using xrandr. i can't figure out how to modify the config file. if someone wants to assist me with that please do but i'm using the xrandr. i did cvt 1920 1080 60. got the modeline and then did (not including quotes) xrandr --newmode 1920x1080_60.00 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
Then i get this error
xrandr: Failed to get size of gamma for output default
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 19
Current serial number in output stream: 19

pleas help me. if there is anything else i need to add to the post please dont hesitate to ask.