[SOLVED] WIMAXIT Raspberry Pi 7" Touch Screen

[Tim Curtis]

I ended up purchasing the 10" version of the the display and after some testing with a Pi4 it turns out that no config.txt entries are needed but the method for automatically determining the correct screen size needs to use kmsprint instead of fbset.

/home/pi/.xinitrc

Code:

# Capture screen size
#SCREENSIZE="$(fbset -s | awk '$1 == "geometry" { print $2","$3 }')"
SCREENSIZE="$(kmsprint | awk '$1 == "FB" { print $3 }' | awk -F"x" '{print $1","$2}')"

The correct KMS screen size for this display is 1600x900

Code:

pi@moode9test:~ $ kmsprint | awk '$1 == "FB" { print $3 }' | awk -F"x" '{print $1","$2}'
1600,900

Another finding was that the Pi3B+ doesn't work well with this display. There are a lot of screen glitches and all kinds of issues with popup keyboard and modals. 

With a Pi4 the display was glitch free, touch was fast and accurate and no issues with the popup keyboard or modals. I assume it will be same with Pi5. I don't have a spare 5 ATM but will get more of them at some point.

I'll prolly update the xinitrc script to use kmsprint for upcoming 9.0.6 release.