Hi, Am Samstag, 15. Februar 2025, 10:09:17 MEZ schrieb Yves-Alexis Perez: > On Fri, 2025-02-14 at 23:59 +0100, Heiko Stübner wrote: > > > > Adding the lightdm-user to group render, solves this issue and allows > > lightdm to start. > > Hi, it looks to me that this should be dynamically granted through ACL with > udev, not statically using groups. > > Can you check with getfacl for example? Here's the result (once my user is > logged in):
The problem is not the logged in user, but the user lightdm itself runs at. I.e. user "lightdm". Hence without user "lightdm" being in group render, lightdm only displays said black screen and the error in the seat-log and does _not_ reach any login prompt at all. Thanks a lot for looking into this Heiko > getfacl /dev/dri/renderD128 > getfacl: Removing leading '/' from absolute path names > # file: dev/dri/renderD128 > # owner: root > # group: render > user::rw- > user:corsac:rw- > group::rw- > mask::rw- > other::--- > > > Regards, > -- > Yves-Alexis >
