[Pkg-xfce-devel] Bug#858843: systemd: Default value of LidSwitchIgnoreInhibited should be no

[Michael Biebl]

Am 27.03.2017 um 23:37 schrieb Michael Biebl:
> Am 27.03.2017 um 21:27 schrieb Martin Monperrus:
>>> How exactly do they compete for the "lid closed" event?
>>
>> Both try to perform an action. If they are the same, say suspend, you just have a warning. If they
>> are different, you don't really understand what and why one or the other happens.
>>
>>> I was under the impression, that XFCE nowadays uses logind, does it not?
>>
>> Yes, but systemd does not honor by default the inhibition request for lid events sent by XFCE.
> 
> 
> What's the output of systemd-inhibit

If you read the logind.conf man page carefully, you'll see that logind
does respect low-level block requests. So if xfce4-power-manager takes a
blocking lock on handle-lid-switch it can implement it's own policy.

I just tested in a VM and xfce4-power-manager does take a proper
inhibitor lock:

$ systemd-inhibit
     Who: NetworkManager (UID 0/root, PID 586/NetworkManager)
    What: sleep
     Why: NetworkManager needs to turn off networks
    Mode: delay

     Who: xfce4-power-manager (UID 1001/test, PID 2138/xfce4-power-man)
    What:
handle-power-key:handle-suspend-key:handle-hibernate-key:handle-lid-switch
     Why: xfce4-power-manager handles these events
    Mode: block

     Who: ModemManager (UID 0/root, PID 561/ModemManager)
    What: sleep
     Why: ModemManager needs to reset devices
    Mode: delay

3 inhibitors listed.

I've used xfce4-power-manager-settings to instruct it to do nothing on
lid-close. Closing the lid, nothing happened. So everything is working
as expected. For xfce4-power-manager to successfully take an inhibitor
lock, it needs to run in an active, local session. You can check that via
$ loginctl show-session $XDG_SESSION_ID
Id=5
User=1001
Name=test
Timestamp=Tue 2017-03-28 06:00:00 CEST
TimestampMonotonic=33951653
VTNr=7
Seat=seat0
Display=:0
Remote=no
Active=yes
State=active


Both logind and xfce4-power-manager work as expected. If you still have
something else reacting to power events, I would check if you have
something like acpid running which might interfere. This is no longer a
logind bug though, so closing this report.

Regards,
Michael
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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