2013-12-14

brightness on ubuntu linux fujitsu laptop

10.10: web.cyb/xuw/brightness:
. ubuntu 12.04 LTS screen brightness?
adjust-the-screen-brightness-on-an-acer-aspire-one-d270
cant-adjust-screen-brightness-on-ubuntu-12-04lts
xbacklight
Install it by terminal:
sudo apt-get install xbacklight
Change brightness by xbacklight -set {20..50},
For example, to set medium brightness one would use
xbacklight -set 50

11: web: fujitsu laptop ubuntu brightness:
. fujitsu laptop cannot use Fn-F6 or Fn-F7
to dim my screen.
As a partial solution I installed xbacklight .
11: web: any ubuntu brightness?:
sudo gedit /etc/default/grub
You will find this line in the new opened window:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Change it to:
... but,
commenters said this can be a problem
nevertheless this site was useful;
because, people showed that the ubuntu brightness
is with the keyboard lock,
so I might have better luck finding it .
check this out first:
. another said sudo gedit /etc/default/grub
even removed brightness control
from the system settings dialog .
. so maybe grub could get me that at least,
by changing it back if it's not like the usual .

setpci (use with great care):
. to adjust the backlight,
it is possible to set the register of the graphic card;
It means you adjust the backlight by
manipulating the hardware directly,
which can be risky and generally is not a good idea.
that is what is being done with
# setpci -s 00:02.0 F4.B=0 .
kde (as in kubuntu) may help:
. if you don't mind the bloat of kde
(it may wear out your hd more)
it lets you adjust the backlight via
System Settings -> Power Management ->
Power Profiles.
. to install that, use Synaptic Package Manager
and Search kubuntu-desktop .
11: proj.cyb/xuw.xbacklight/install:
. checking for xbacklight, it said it was not installed,
and showed me how to do that .
. it seemed to require a lot of other packages,
but I already had them .
. I was able to run that command from my user acct,
and xbacklight -set 30 is a nice brightness .
. good to see that beautiful fujitsu screen again .