Second login always fails. I have to reboot between logins

[Daniel van Vugt]

I used to be able to log in/out/in again between Gnome on Wayland and Xorg etc. Now it doesn't work. Any attempt to log out and in again fails, unless I reboot between logins.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: lightdm 1.22.0-0ubuntu5
ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
Uname: Linux 4.10.0-22-generic x86_64
ApportVersion: 2.20.5-0ubuntu5
Architecture: amd64
Date: Mon Jun 26 17:22:59 2017
InstallationDate: Installed on 2017-05-03 (54 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170502)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

The issue seems created by the gnome-session changes from 3.24.1-0ubuntu5

" * Backport patches from 3.25.3 to kill D-Bus clients on log out.
    This works around GNOME Online Accounts not working correctly
    after logging out (LP: #1610944)"

It fails every time to login it again here but downgrading gnome-session to the previous version fixes the issue.

Note that the problem is not specific to lightdm, the behaviour is the same using "startx -- :1" to start the session

[Jean-Baptiste Lallement (jibel)]

I cannot reproduce this issue anymore. It is still a problem for you?

[Sebastien Bacher (seb128)]

it has probably been fixed by that update
https://launchpad.net/ubuntu/+source/gnome-session/3.25.90-0ubuntu1

which replaces the backported patches previously mentioned

[Daniel van Vugt (vanvugt)]

Seems to have been fixed for a while now. Logging out and in again works for me every day.

[Tom (tomasz-belina)]

I still have this issue on gnome-session 3.26.1-0ubuntu6

[Daniel van Vugt (vanvugt)]

In Ubuntu "Fix Released" means it is fixed in the next release (Ubuntu 18.04).

If you'd like a fix for Ubuntu 17.10 then we can note it here.