Missing groups at each startup


This seems to be a lightdm / kwallet bug, see here: https://bugs.launchpad.net/lightdm/+bug/1781418 and here: https://bugzilla.redhat.com/show_bug.cgi?id=1581495

Commenting out

auth optional pam_kwallet.so
auth optional pam_kwallet5.so


#auth optional pam_kwallet.so
#auth optional pam_kwallet5.so

in /etc/pam.d/lightdm - as suggested in the link above, solves the problem for now.


This seems to be an issue with lightdm. Switching to GDM solved the issue temporarily for me. Still don't know what's wrong with lightdm though.

I have exactly the same issue (Ubuntu 18.04). I don't have a solution yet, but I noticed, that everything is correct when I log in via ssh or a text console, but not when I open a terminal emulator on my desktop environment. Is this the same for you? Maybe it has something to do with some pam-files?

Also weird: correct would be:

uid=1000(catscrash) gid=1000(catscrash) Gruppen=1000(catscrash),4(adm),6(disk),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),132(vboxusers),136(libvirtd)

wrong is

uid=1000(catscrash) gid=1000(catscrash) Gruppen=1000(catscrash)

now I can do

catscrash@catscrash-desktop ~ % newgrp adm
catscrash@catscrash-desktop ~ % newgrp catscrash
catscrash@catscrash-desktop ~ % id
uid=1000(catscrash) gid=1000(catscrash) Gruppen=1000(catscrash),4(adm)
catscrash@catscrash-desktop ~ % newgrp sudo
catscrash@catscrash-desktop ~ % id
uid=1000(catscrash) gid=27(sudo) Gruppen=27(sudo),4(adm),1000(catscrash)
catscrash@catscrash-desktop ~ % newgrp catscrash
catscrash@catscrash-desktop ~ % id
uid=1000(catscrash) gid=1000(catscrash) Gruppen=1000(catscrash),4(adm),27(sudo)
catscrash@catscrash-desktop ~ %                                                                                                                                                                                                          

So it definitely knows about my groups, as I couldn't do that with groups I'm not in, and once I changed the primary group and back, those groups appear... weird!

I also noticed, that this only happens in KDE / plasmashell, is this the same for you? When logging in via gnome shell everything works fine.