Is X11 Screen Rotation Possible?

[acid andy]

I'm using X11, not Wayland, on my PinePhone and I'd love to be able to rotate the screen. Has anyone managed to do this? Or maybe someone has it working on another Pine64 device?

My XFCE display settings tell me my monitor is called "default" and the drop-down for Rotate is disabled.

I tried:

Code:

xrandr --output default --rotate right

and it tells me rotation isn't supported.

Looking around it seems my PinePhone's monitor should be detected as "DSI-1" so why is it using "default"?

I tried to add a config:

/etc/X11/xorg.conf.d/30-monitor.conf

Code:

Section "Monitor"
  Identifier "DSI-1"
  Option    "Rotate" "right"
EndSection

but it had no effect, because I think X11 still doesn't know my monitor is "DSI-1". How should it be detected?

One last thing I tried was adding:

Code:

Option "Rotate" "CW"

to /etc/X11/xorg.conf.d/20-fbturbo.conf

but that stops X from starting altogether and in the Xorg.0.log it says XRandR rotation is being disabled, so that's obviously a no-go.

Can anyone help?