Public bug reported:
My notebook brightness is always very dim...
After trying very workarounds, I blacklisted video in /etc/modprobe.d/blacklist
adding:
blacklist video
after reboot all was ok (brightness now is good, max). So i understood this
problem depends from "video" module.
it's ACPI module? blacklisting this module brightness is now max, but Fn keys
to change brightness don't function.
So i discovered that this "video" module, during every boot, create a folder:
/proc/acpi/video
and in this folder there is this file:
/proc/acpi/video/VGA/LCDD/brightness
editing it:
levels: 0 1 2 3 4 5 6 7 8 9 10 11 12 13
current: 0
Now to change current: 0 (min brightness) to current: 13 (max brightness) and
to make this change permanent, i used this workaround:
"
sudo nano brightness
i copy this 2 lines in terminal folder:
#!/bin/sh
echo 13 > /proc/acpi/video/VGA/LCDD/brightness
C) Ctrl-O to save e Ctrl-X to exit
Now we will copy our new shell script to the appropriate directory, make it
executable and add the following links by typing the following in Terminal:
sudo mv brightness /etc/init.d
sudo chmod 755 /etc/init.d/brightness
sudo update-rc.d brightness defaults 13
so it's ok, but u should solve this problem in video module for future.
** Affects: ubuntu
Importance: Undecided
Status: New
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asus m51sn LCD Brightness
https://bugs.launchpad.net/bugs/387060
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