CrowPi L - Running Bookworm, it shows a blank screen on startup
To fix this issue, pls try the following：
"I got Bookworm running on a Crowpi L. Pi4 8GB with the default Wayland settings.
I had to add "video=HDMI-A-1:1366x766M@60D" to the front of /boot/cmdline.txt and select 1360X766 resolution on Screen Configuration.
The battery status program works also."
reference :https://forum.elecrow.com/discussion/543/new-raspberry-pi-os-bookworm
written by: lcrowser