Oops. I accidentally replied privately to dev@jpoiret.xyz, not mentioning 57589@debbugs.gnu.org. I hope the history can be recovered from this message. Josselin recommended to - check permissions on /tmp/.X11-unix/ (gdm user should have r+w permissions)     shegeley@zone51 /tmp$ ls -lah .X11-unix/     total 0     drwxrwxrwt 2 gdm      gdm    80 сен  5 16:12 ./     drwxrwxrwt 6 root     root  160 сен  5 16:16 ../     srwxrwxrwx 1 shegeley users   0 сен  5 16:12 X1     srwxr-xr-x 1 gdm      gdm     0 сен  5 16:12 X1024 -  check /var/lib/gdm/, doesn't have the proper permissions Hm. That's really strange. For some reason /var/lib/gdm had "transmission" as user-group. I assure you that I didn't explicitly do any "dirty stuff" like that permission changing in my config shegeley@zone51 /tmp$ sudo ls -lah /var/lib/gdm total 0 drwx------ 1 gdm  gdm           38 авг 26 21:46 . drwxr-xr-x 1 root root         248 авг 28 18:37 .. drwxr-xr-x 1  973 transmission  62 авг 26 21:46 .cache drwx------ 1  973 transmission  44 авг 26 21:46 .config drwx------ 1  973 transmission  10 авг 26 21:46 .local shegeley@zone51 /tmp$ sudo chown -R gdm:gdm /var/lib/gdm shegeley@zone51 /tmp$ sudo ls -lah /var/lib/gdm total 0 drwx------ 1 gdm  gdm   38 авг 26 21:46 . drwxr-xr-x 1 root root 248 авг 28 18:37 .. drwxr-xr-x 1 gdm  gdm   62 авг 26 21:46 .cache drwx------ 1 gdm  gdm   44 авг 26 21:46 .config drwx------ 1 gdm  gdm   10 авг 26 21:46 .local After changing it was able to launch into GDM, but with X11 as display manager :( Attached new logs. On 05.09.2022 10:23, Josselin Poiret wrote: > Hi again, > > Grigory Shepelev writes: > >> My config is heavily depends on it's directory (passing it with >> --load-path). I can (and will) publish it all (I've been planning to do >> so) but I'd like to polish few parts. >> >> Any exact part are you looking for in config?  I attached my system-wide >> services. > I asked for that partly because it helps identifying common errors, and > it's always better for people debugging to have access to all the > information, and partly because I couldn't see anything that could help > in the logs. However, it seems mutter can't write into /tmp/.X11-unix/, > could you check that the gdm user has the permission to write there? It > should be rwxrwxrwx. I don't see any modification in your config that > would prevent the x11-socket-directory-service from %desktop-services to > run. Also, it seems that /var/lib/gdm/ doesn't have the proper > permissions, maybe because of [1]. You can try `sudo chown -R gdm:gdm > /var/lib/gdm` to fix that. > > [1]https://issues.guix.gnu.org/36508 > > HTH.