Bug 351693 - Screen brightness is not restored after screen unlock (idle time)
Summary: Screen brightness is not restored after screen unlock (idle time)
Status: RESOLVED DUPLICATE of bug 352497
Alias: None
Product: Powerdevil
Classification: Plasma
Component: general (show other bugs)
Version: 5.3.90
Platform: Kubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Plasma Development Mailing List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-08-24 13:20 UTC by soee
Modified: 2017-10-27 13:15 UTC (History)
9 users (show)

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Description soee 2015-08-24 13:20:09 UTC
Working with Dell laptop often it is left with lock screen when i am afk. After some idle time screen brightness is lowered by system to save power. When i return and move cursor or unlock screen, original brightness is not restored so i have to do it manually.

Reproducible: Always

Steps to Reproduce:
1. Lock screen
2. Leave laptop unused for some time
3. Try to move cursor and unlock screen

Actual Results:  
Original brightness is not restored - screen stays darker.

Expected Results:  
System should restore original screen brightness that was set bofore it went to idle.
Comment 1 Fabrizio Ruggeri 2015-10-16 10:10:12 UTC
I have exactly the same problem on a Dell latitude E6540

If I can add some more informations let me know.
Comment 2 Fabrizio Ruggeri 2015-10-16 10:12:20 UTC
Kubuntu 15.04
Kde platform version 4.14.8
Kde plasma version 5.3.2
Qt version 5.4.1
Kernel: 3.19.0-30-generic (64bit)
Comment 3 Juan Luis Baptiste 2016-02-23 15:58:03 UTC
I can also confirm this on kubuntu 15.10, both with default plasma 5.3 install and with plasma 5.5 from backports ppa.
Comment 4 August Rydberg 2016-07-10 10:48:44 UTC
I can confirm this on Kubuntu 16.04 with plasma 5.5.5.
Comment 5 August Rydberg 2016-07-10 10:50:33 UTC
Some more info:
Lenovo Yoga 2 Pro @ 1920x1080
Kernel: 4.4.0-24-generic
Comment 6 Yves Glodt 2017-08-18 22:53:17 UTC
I have a kind of the same issue. I use a two monitor-setup (laptop-screen and an external monitor connected by hdmi)

When udimming after the screens are dimmed after 5 min. of inactivity, the laptop screen comes back with full brightness.

I then have to click on the battery icon in the tray, and the indicator still shows the minimum brightness (which is my choice).

As soon as I move the indicator (slider) a bit, it lowers the brightness to the set level.

First bug: The brightness should not change after the screen dims.
Second bug: After dim happens, the indicator shows minimum brightness even it's set to full. As soon as I move it it goes back to the value actually set by the indicator.
Comment 7 Nate Graham 2017-10-27 13:15:01 UTC

*** This bug has been marked as a duplicate of bug 352497 ***