Troubleshooting • Re: Multi-Seat use of RPi 5

Apologies for the VNC diversion, have been traveling. I (finally) read the OP links and the Debian link pointed out a rather problematic shortcoming, which is

Both LightDM and GDM suffer from an issue where logging out as the "master of seats", seat0, causes all sessions to logout, and leaving blank/buggy Virtual Terminals in their place.

I did play with multi-seat for a while on Pi 4 (back in 2019), and have not seen that particular issue.
At least not when logged in with different user names.

I do see another complication though.
The trick to do it on Pi 4 was to switch back to the old framebuffer driver instead of the vc4kms one, as the old one gives you a seperate /dev/fb0 /dev/fb1 devices.
You can then easily assign /dev/fb1 and two of the USB ports to the second seat by udev rules, and X11 will do the rest.

Things are more difficult with the vc4 driver exposing only one device.
Pi 5 only has the new vc4 driver and not the old one...
You are better off with Pi 4 in that regard.

Statistics: Posted by incognitum — Sat Nov 30, 2024 4:49 pm

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