Ubuntu

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?

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markino
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markino (marco-crosio) said : 		#1

gnome LCD Brightness Applet dosent solve your problem?

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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.

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CheolHan Yoon (mait) said : 		#3

Thanks markino, that solved my question.

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CheolHan Yoon (mait) said : 		#4

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

Thanks markino.