How can I adjust lcd brightness win Dell Inspiron 1501?

Asked by CheolHan Yoon

I'm using gutsy. In gutsy my Dell Inspiron 1501 laptop quite works well accept some problem.

I cannot adjust my lcd brightness with Fn + Up(Fn + Down) keys. Its works well in windows. Other keys(Volume control, Battery state, Ejecting CD, etc...) works well, too.

But I can adjust bright manually.

$ cat /proc/acpi/video/VGA/LCD/brightness
levels: 100 37 12 25 37 50 62 75 87 100
current: 0
$ sudo -i

# echo 75 > /proc/acpi/video/VGA/LCD/brightness (decrease brightness)
# echo 87 > /proc/acpi/video/VGA/LCD/brightness (increase brightness)

What information needed for solve this problem?

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Solved by:
markino
Solved:
Last query:
Last reply:
Revision history for this message
markino (marco-crosio) said :
#1

gnome LCD Brightness Applet dosent solve your problem?

Revision history for this message
Best markino (marco-crosio) said :
#2

also this i think

https://wiki.ubuntu.com/LaptopTestingTeam/HotkeyResearch

could help you in finding keycode sended from your notebook to the os when pressing Fn + Up or Down.

Revision history for this message
CheolHan Yoon (mait) said :
#3

Thanks markino, that solved my question.

Revision history for this message
CheolHan Yoon (mait) said :
#4

I reported bug by following https://wiki.ubuntu.com/LaptopTestingTeam/HotkeyResearch.

Thanks markino.