Bug 811486 - the screen dims too fast
Summary: the screen dims too fast
Alias: None
Product: Fedora
Classification: Fedora
Component: kde-workspace
Version: 19
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Than Ngo
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2012-04-11 08:53 UTC by Karel Volný
Modified: 2015-02-17 14:41 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-02-17 14:12:50 UTC
Type: Bug

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
KDE Software Compilation 286572 0 None None None 2012-07-17 09:00:52 UTC
KDE Software Compilation 295814 0 None None None 2012-07-17 09:08:56 UTC
KDE Software Compilation 304696 0 None None None Never

Description Karel Volný 2012-04-11 08:53:09 UTC
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):

How reproducible:

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 16:00:30 UTC
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 14:56:08 UTC
Does this still happen in KDE 4.10?

Comment 3 Karel Volný 2013-07-02 12:39:14 UTC
(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 17:06:29 UTC
This message is a notice that Fedora 19 is now at end of life. Fedora 
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Comment 5 Fedora End Of Life 2015-02-17 14:12:50 UTC
Fedora 19 changed to end-of-life (EOL) status on 2015-01-06. Fedora 19 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
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Thank you for reporting this bug and we are sorry it could not be fixed.

Comment 6 Karel Volný 2015-02-17 14:41:54 UTC
[I believe this is more proper resolution ...]

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