Bug#992990: systemd: Does not clean up user session

[Michael Biebl]

Am 26.08.21 um 15:58 schrieb Ansgar:
> On Thu, 2021-08-26 at 09:13 +0200, Michael Biebl wrote:
>> In your case, dbus-daemon is *not* started as a user service, but as
>> a
>> regular process within a login session, so there can be multiple
>> ones.
> 
> This looks incorrect: dbus was started with `--address=systemd` and
> `--systemd-activation`. So it looks like it was started via systemd as
> a user service.

Right, sorry. I was confused by the instance that was started via AT-SPI.

>> systemd does have a facility `KillUserProcesses=yes` which kills all
>> processes of such a login session, when the user logs out.
>> The upstream default is "yes" but in Debian we had complaints that
>> this
>> killed processes like screen, so we patch it to "no" as default in
>> Debian.
> 
> And with `KillUserProcesses=no` any process still left in the user's
> login session will keep the login alive (in "closing" state) and the
> user's `systemd --user` instance and thus dbus will be kept running.

Nod, the end result is the same and the underlying issue is that we 
default to `KillUserProcesses=no`


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