I am trying to use a vertical screen for a project and was having issues rotating the display. The gui for the display did not recognize my monitor at all, so I can't rotate it there. I had to set my resolution in /boot/firmware/usercfg.txt.
Then, I tried using
xrandr -o left and received the following error.
Edit: Every time I run xrandr, I get the following error too
xrandr: Failed to get size of gamma for output default
X Error of failed request: BadMatch(invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 2 (RRSetScreenConfig)
Serial number of failed request: 14
Current serial number in output stream: 14
Since this didn't work, I saw that I could rotate it by changing
=3. When I did that and restarted, the display was in diagonal stripes (see images). I could see movement in it and programs opened up, but it's obviously not exactly what I'm looking for.
Can anyone help me either use another way to rotate the screen or help me fix one of these problems? Thanks for your help in advance.
I am using a Raspberry Pi 3B V1.2 if that matters.