Bug 324258

Summary:	erratic screen brightness with power management enabled.
Product:	[Unmaintained] solid	Reporter:	Artur O. <commander.alchemy>
Component:	powermanagement	Assignee:	Dario Freddi <drf>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	kde
Priority:	NOR
Version First Reported In:	4.11.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	lspci -k ux32vd

Description Artur O. 2013-08-30 08:10:04 UTC

When the laptop is running on battery, sometimes it just starts to jump from 100% brighness down to ~45% then back to 100% and back to ~45%.

This happens so fast that the screen flickers. Only way to stop this is to disable power management or try to connect the charger and keep it or disconnect it again.

Sometimes this just triggers when you change the brightness when on battery or just when disconnecting the charger. Or sometimes just at boot.

Reproducible: Sometimes




Up to date Arch installation
Linux 3.10.9

Comment 1 Artur O. 2013-08-30 08:10:52 UTC

Created attachment 82029 [details]
lspci -k ux32vd

lspci -k ux32vd

Comment 2 Artur O. 2014-01-27 07:19:42 UTC

The screen brightness is still not controlled by KDE for me but it seems the issues are gone. Maybe a Intel/Kernel upgrade fixed this?

Anyhow would be nice to control it with KDE to get the OSD up.