SDDM refuses to run on raspberry Pi 5/500/500+

[TheOneDoc]

SDDM refuses to run on raspberry Pi 5/500/500+

The problem was fixed in raspberrypios some time ago. Discussion is here https://forums.raspberrypi.com/viewtopic.php?t=358853

and the fix is here:
https://github.com/raspberrypi-ui/gldriver-test/blob/master/usr/lib/systemd/scripts/rp1_test.sh

create /etc/X11/xorg.conf.d/99-vc4.conf with the content:

Section "OutputClass"
Identifier "vc4"
MatchDriver "vc4"
Driver "modesetting"
Option "PrimaryGPU" "true"
EndSection

[JamiKettunen]

I'll repeat what was discussed on IRC PM: this probably belongs in main/base-rpi in a subpackage with e.g. install_if = [self.parent, "xserver-xorg-core"] (since I doubt it's SDDM-specific) assuming it doesn't break Raspberry Pi 3/4

[q66]

i'm not sure this belongs anywhere, it's not an rpi-specific thing

[TheOneDoc]

It impacts X11 on the 5, 500 and 500+ models. I just haven't noticed that because kde defaults to Wayland.

[q66]

it impacts X11 on any computer with multiple card nodes (any SBC with a separate IPU, any regular computer with multiple graphics cards, etc)

[TheOneDoc]

So what do you think? Maybe just put it explicitly in the documentation?