[prev in list] [next in list] [prev in thread] [next in thread] 

List:       kde-bugs-dist
Subject:    [solid] [Bug 276482] brightness setting via Fn+brightness key limited to half of possible levels
From:       Zbigniew Luszpinski <zbiggy () o2 ! pl>
Date:       2014-01-31 21:50:34
Message-ID: bug-276482-17878-oKDd4kp9LC () http ! bugs ! kde ! org/
[Download RAW message or body]

https://bugs.kde.org/show_bug.cgi?id=276482

Zbigniew Luszpinski <zbiggy@o2.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zbiggy@o2.pl

--- Comment #26 from Zbigniew Luszpinski <zbiggy@o2.pl> ---
1. Please add option "Brightness control device" in "System Settings"
->"Display and Monitor" where I can choose from combo menu what device controls
backlight of LVDS device.
This combo would use names from: /sys/class/backlight/ directory listing,
Real life example: laptop HP ProBook 455 G1 with two Radeons inside.
Inside: /sys/class/backlight/
acpi_video0 (connected to primary Radeon inside APU, brightness steps 0-20)
acpi_video1 (connected to secondary Radeon mobile GPU - no brightness control
because it is mux-less - connects to display via primary Radeon in APU no
backlight control possible)
radeon_bl0 (connected to Radeon inside APU, brightness steps 0-255)
Stupid KDE chooses acpi_video1 because some egoistic moron hardcoded this in
backlighthelper.cpp file inside kde-workspace sources. Because it is good for
his laptop and of course nobody else lives on this planet and use KDE.

2. Allow to configure steps. Now +-10 step is hardcoded in
powerdevilupowerbackend.cpp because nobody else uses KDE than 1 developer who
wrote this code. If you strongly believe that there is more than 1 person using
KDE add option to configure step size.
Now sadistic powerdevilupowerbackend.cpp developer decided to burn my eyes out
from head not allowing to have brightness lower than 12 where I need 1.

Only way to set mild brightness for this laptop is to open konsole and do:
echo 1 > /sys/class/backlight/radeon_bl0/brightness

-- 
You are receiving this mail because:
You are watching all bug changes.
[prev in list] [next in list] [prev in thread] [next in thread]