more nerdy stuff how I fixed touchscreen in landscape mode on xfce4 debian pinephone...

yes I am that nerdy.

here is the touchscreen

mobian@mobian:~$ sudo dmesg | grep Good [ 13.940050] Goodix-TS 0-005d: ID 917S, version: 0200 [ 13.942347] Goodix-TS 0-005d: Direct firmware load for goodix_917S_cfg.bin failed with error -2 [ 13.982023] input: Goodix Capacitive TouchScreen as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-005d/input/input2

add rules to file /etc/udev/rules.d/99-goodix-touchscreen.rules

this

ACTION=="add|change", KERNEL=="event[0-9]*", ATTRS{name}=="Goodix Capacitive TouchScreen", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 1 0 -1 0 1 0 0 1"

this makes xfce4 landscape mode work with touchscreen.