Looks like it was a leftover lock file. Your command returned: Adding system user `guest-Os5HCE' (UID 197) ... Adding new group `guest-Os5HCE' (GID 248) ... Adding new user `guest-Os5HCE' (UID 197) with group `guest-Os5HCE' ... useradd: existing lock file /etc/subgid.lock without a PID useradd: cannot lock /etc/subgid; try again later. adduser: `/usr/sbin/useradd -d / -g guest-Os5HCE -s /bin/bash -u 197 guest-Os5HCE' returned error code 18. Exiting. umount: /tmp/guest-Os5HCE: not mounted
I have removed /etc/subgid.lock and now all works as expected. How can this lock file be left over? Perhaps leftover locks should be deleted at boot time. Thanks, Robert, you've solved my problem! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1304505 Title: Guest session not working Status in “lightdm” package in Ubuntu: Incomplete Bug description: After the last update, I cannot log into the guest session from lightdm. Session, does not start up, and I get thrown back to the login screen. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: lightdm 1.8.5-0ubuntu1 ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5 Uname: Linux 3.11.0-19-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 Date: Tue Apr 8 17:51:14 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2012-12-20 (473 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) LightdmConfig: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter autologin-user=stereo MarkForUpload: True SourcePackage: lightdm UpgradeStatus: Upgraded to saucy on 2013-10-18 (172 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1304505/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

