I faced this problem on two different machines (both lightdm + plasma desktop, on both I happily used this combination on Ubuntu 16.04 but once I upgraded to 18.04, or soon afterwards, I lost all my groups).
Switched to sddm on both, it helped. So mayhaps lightdm should be dropped or downgraded, the issue is fairly critical (usb doesn't work, sudo has issues, pluggable devices don't work). Picture in my case: - after lightdm login $ id uid=1000(marcin) gid=1000(marcin) groups=1000(marcin) - after sddm login $ id uid=1000(marcink) gid=1000(marcink) groups=1000(marcin),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),109(netdev),113(lpadmin),128(sambashare),147(lxd),999(docker) ** Bug watch added: Red Hat Bugzilla #1581495 https://bugzilla.redhat.com/show_bug.cgi?id=1581495 -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kwallet-pam in Ubuntu. https://bugs.launchpad.net/bugs/1781418 Title: User not being initialized correctly on login To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1781418/+subscriptions -- kubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
