https://bugs.kde.org/show_bug.cgi?id=431994
Bug ID: 431994
Summary: per display ddcutil brightness control with
-DHAVE_DDCUTIL
Product: Powerdevil
Version: 5.20.5
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: andrewammerl...@riseup.net
Target Milestone: ---
SUMMARY
I'm having some problems with the brightness control of my displays. And I'm
pretty sure the reason is that one of my displays supports DDC communication
and one does not. After some testing and reading I discovered that the
brightness control seems to control all monitors at once, and since one of the
displays does not support DDC communication the brightness control fails
completely.
One display is a Wacom One drawing tablet which I need for (online) teaching.
This particular display does not have any buttons or anything to control the
brightness, the only way to control this is using ddcutil. It would be awesome
if we could have brightness control on a per display basis, which would solve
my issue and let me control the brightness of this display without having to
use the terminal.
STEPS TO REPRODUCE
1. install ddcutil
2. Compile powerdevil with -DHAVE_DDCUTIL
3. reboot
OBSERVED RESULT
No brightness slider in the plasma Battery and Brightness applet
EXPECTED RESULT
A brightness slider for each display that supports DDC communication. (and
obviously no slider for displays that do not.)
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.10.9
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
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