https://bugs.kde.org/show_bug.cgi?id=486422
Bug ID: 486422
Summary: Suspend inhibits also end up keeping the display on
Classification: Plasma
Product: Powerdevil
Version: 5.27.80
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: m...@mterry.name
CC: m...@ratijas.tk, natalie_clar...@yahoo.de
Target Milestone: ---
SUMMARY
When an app inhibits suspend via a freedesktop.org dbus call, it seems to also
wake & keep the display on. This causes annoyance when this happens overnight.
A user of my backup app reported this issue [1], and I'm reporting it on here
with some extra investigation.
Here's the backup use case for "suspend only" inhibits (while wanting to allow
display to stay off / the session to go idle):
- This app can resume backups. So if the user wants to log out or power off,
that's fine.
- If the user wants to walk away from the machine or otherwise go idle, that's
also fine.
- But the app wants to be able to finish its work without being suspended
through power policy.
I've noticed by watching dbus, that the fd.o inhibit request gets sent to
Powerdevil as an InterruptSession inhibit. But past that, I am not sure how
this ends up resulting in the display staying on.
[1] https://gitlab.gnome.org/World/deja-dup/-/issues/462
STEPS TO REPRODUCE
1. Inhibit suspend via dbus (or if using this backup app, run "deja-dup
--backup --auto" after configuring a backup)
2. See if display is allowed to turn off
(I've not tested this myself, I don't have a KDE system handy and VMs don't
seem to reproduce display-power-logic.)
OBSERVED RESULT
The display wakes up and stays on.
EXPECTED RESULT
The display to stay off and be allowed to go idle.
SOFTWARE/OS VERSIONS
Operating System: Kubuntu 23.10
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10
Kernel Version: 6.5.0-27-generic (64-bit)
Graphics Platform: X11
Processors: 16 × 12th Gen Intel® Core™ i5-12500H
Memory: 15.2 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: VivoBook_ASUSLaptop K3502ZA_K3502ZA
System Version: 1.0
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