Ubuntu image with X11 and Resolution 2560x1440

ROCK 5 Series 5B/5B+
20
  • create a folder /boot/overlay-user/
  • copy the dtbo file there
  • create line: user_overlays=rk3588-add-hdptxphy_hdmi_clk in armbianEnv.txt

note I I just wrote it from the top of my head, as I had to RMA my board.
The confusing thing here is the inconsistent nomenclature: overlay-user != user_overlays