https://bugs.kde.org/show_bug.cgi?id=414502
Bug ID: 414502
Summary: (Un)plugging the AC adapter while screen is off always
results in 100% brightness
Product: Powerdevil
Version: 5.17.3
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
If I plug in or unplug the laptop's AC adapter after the screen has gone to
sleep the screen will wake up and the backlight will be at 100%, no matter what
the brightness level was before the screen went to sleep.
STEPS TO REPRODUCE
1. Lower the backlight brightness to something visibly less than 100%
2. Leave the system alone until the screen goes to sleep
3. Plug in or unplug the AC adapter.
OBSERVED RESULT
The screen wakes up and the backlight is at 100% brightness.
EXPECTED RESULT
The screen should wake up and the backlight should be at whatever level it was
before the screen went to sleep.
SOFTWARE/OS VERSIONS
Linux: Arch Linux
KDE Plasma Version: 5.17.3-1
KDE Frameworks Version: 5.64.0-1
Qt Version: 5.13.2-3
xorg-server version: 1.20.5-4
ADDITIONAL INFORMATION
The laptop is HP 250 G7, model 6MQ29EA. It has Intel Core i3 7020U:
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620
[8086:5916] (rev 02)
And the screen:
Manufacturer: BOE Model: 687 Serial#: 0
I don't have this problem on an older HP Compaq 6720s laptop, which has Intel
965 GM(E?) graphics.
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