Bug 811486

Summary: the screen dims too fast
Product: [Fedora] Fedora Reporter: Karel Volný <kvolny>
Component: kde-workspaceAssignee: Ngo Than <than>
Status: CLOSED UPSTREAM QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 19CC: jreznik, kevin, kvolny, ltinkl, mbriza, oliver.henshaw, rdieter, rnovacek, than
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2015-02-17 09:12:50 EST Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:

Description Karel Volný 2012-04-11 04:53:09 EDT
Description of problem:
In powerdevil config I have set the screen to lessen the brightness after two minutes, and to turn off after five minutes when on batteries.
However, the screen starts dimming after one minute, and in two minutes, it is unreadable.

In addition, it goes dim even if a video is played, which should not happen.

Version-Release number of selected component (if applicable):
kde-workspace-4.8.2-3.fc17.x86_64

How reproducible:
always

Steps to Reproduce:
1. go to power settings, see the values for battery, there should be 2 minutes to "Stmavieť obrazovku" (don't know the original ... "less brightness"?) and 5 minutes to powersave
2. unplug AC, run on battery
3. start stopwatch and stop touching mouse/keyboard
4. a few minutes of testing, see below
5. start your favorite movie player, play a movie
6. start stopwatch and stop touching mouse/keyboard

Actual results:
T=0 - the screen is on its set brightness
T=60 s - the screen goes a lot darker, making it very hard to read under commong lighting conditions
T=90 s - the screen goes yet more darker
T=120 s - the screen goes to zero backlight, making it impossible to see anything on it even in a dark night
T = 300 s - the screen turns off

these results are the same for step 3. and step 6.


Expected results:
step 3:
T=0 - the screen is on its set brightness
T=120 s - the screen goes to half of the set brightness
T = 300 s - the screen turns off

step 6:
the screen does not go dim and the machine does not suspend until the movie is finished (if the battery doesn't reach low level meanwhile)


Additional info:
I guess the second part is a regression, from what I recall, disabling diming during movie playback has worked before ...
Comment 1 Oliver Henshaw 2013-02-13 11:00:30 EST
The freedesktop ScreenSaver inhibit interface should now inhibit all of screensaver, dimming and screen power setting in KDE 4.10; I believe vlc 2.1 will be using this interface.

The dimming starting early is https://bugs.kde.org/show_bug.cgi?id=304696
Comment 2 Lukáš Tinkl 2013-06-11 10:56:08 EDT
Does this still happen in KDE 4.10?
Comment 3 Karel Volný 2013-07-02 08:39:14 EDT
(In reply to Lukáš Tinkl from comment #2)
> Does this still happen in KDE 4.10?

not sure about the time to dim, but the problem with dimming during video playback (using dragon) still persists

... and reading comment #1, I don't see any reason to think otherwise as the referenced upstream bug is not fixed & vlc 2.0.7 seems to be the latest available
Comment 4 Fedora End Of Life 2015-01-09 12:06:29 EST
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Comment 5 Fedora End Of Life 2015-02-17 09:12:50 EST
Fedora 19 changed to end-of-life (EOL) status on 2015-01-06. Fedora 19 is
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Comment 6 Karel Volný 2015-02-17 09:41:54 EST
[I believe this is more proper resolution ...]