logout fails: the answer

[Jacques Beigbeder]

Hello Ubuntu users,
 
>> I have a new problem with 50 Linux boxes.
>> My environment:
>> 	Ubuntu 16.04 up to date
>> ...
>> The user logs with Ubuntu session, since:
>> but no logout

Answer is some interaction with lightdm and kwallet.
See:
	https://askubuntu.com/questions/1058015/unable-to-end-session-log-out-using-lightdm-16-04
	https://unix.stackexchange.com/questions/454593/groups-not-registering-in-x
and also:
	https://bugzilla.redhat.com/show_bug.cgi?id=1581495

Unfortunately:
	Priority: low
 	Severity: high 

Correction 1: comment libwallet in /etc/pam.d/ligthdm
or
Correction 2: apt remove libpam-kwallet-common libpam-kwallet4 libpam-kwallet5


Of course this happens on computers used for teaching, with a lot
of logins/logouts. On a personal laptop, you don't see.

--
Jacques Beigbeder                    |  Jacques.Beigbeder at ens.fr
Service de Prestations Informatiques |     http://www.spi.ens.fr
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