Hi Martin,
Martin Steigerwald <martin@lichtvoll.de> writes:
> Hi!
>
> Since quite some time Debian defaults to X without setuid root by default.
> See below for relevant NEWS entry for 'xserver-xorg-core'. Also:
>
> % ls -l /usr/bin/X
> lrwxrwxrwx 1 root root 4 Mär 31 12:14 /usr/bin/X -> Xorg
> % ls -l /usr/bin/Xorg
> -rwxr-xr-x 1 root root 274 Mär 31 12:14 /usr/bin/Xorg
>
> Still for Plasma the X server is started with full root privileges:
>
> % ps aux | grep '[X]org'
> root 2570 3.4 0.9 878916 150504 tty7 Ssl+ Jun03 35:44 /usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{3fa9520f-d081-42c7-8c59-63a42a7d91e0} -background none -noreset -displayfd 17 -seat seat0 vt7
>
> Despite I believe all requirements on this system to be met. Also
> 'xserver-xorg-legacy' package is not installed:
>
> % dpkg -l | grep xserver-xorg | cut -c1-78
> ii xserver-xorg-core 2:1.20.8-2
> ii xserver-xorg-input-libinput 0.29.0-1
> ii xserver-xorg-input-wacom 0.34.99.1-1+b1
> ii xserver-xorg-video-intel 2:2.99.917+git20200226-1
>
> What is missing?
>
I think this is probably what you're looking for:
https://github.com/sddm/sddm/issues/246
Cheers,
Nicholas
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