hi all . i got the next . thiis may be useful to openbsd arm .
--- I attached a 3.5 in LCD to the Raspberry Pi 3 . (3.5inch RPi LCD (A) -2020-08-20-raspios-buster-armhf-full.img) then I have GUI on Raspberry Pi 3 . I removed this LCD to attach it to a Raspberry Pi 4 . And the next result i suprized . 1) Enter Raspberry Pi 3 from openbsd with vnc over ssh . 2) type x11vnc on this Raspberry Pi 3 in order to start vnc server . 3) start vncviewer on OpenBSD 4) Raspberry Pi 3 GUI appear on OpenBSD . The Raspberry Pi 3 doesn't have any HDMI monitor or LCD monitor . It's like a virtual display . -- regards