Laptop-Screen Lightening

[BenHH]

Hello Forum,

I'm working with Linux since two days and be very happy. Just one thing is annoying I can't adjust the screen lightening. Of course I tried to adjust the display brightness through the power management but nothing happen. I'm using a HP Pavilon dv3550eg ... does anybody have a solution for me?

Thanks a lot

Regards from Hamburg

Ben

[Pilosopong Tasyo]

Hello and welcome to Linux Mint.

You can adjust the brightness of your notebook's display through the keyboard. Look for a key labeled Fn (it's usually located at the bottom left corner). Then look for the keys that look like sun icons (usually superimposed on the Fxx keys across the top). Press Fn+Fxx to adjust the brightness to your liking.

[BenHH]

Hello and welcome to Linux Mint.

You can adjust the brightness of your notebook's display through the keyboard. Look for a key labeled Fn (it's usually located at the bottom left corner). Then look for the keys that look like sun icons (usually superimposed on the Fxx keys across the top). Press Fn+Fxx to adjust the brightness to your liking.

Hello & thx for the fast reply.

I already tried the function key but unfortunately nothing happened even though I got an optical note that the lightening was changed (after pressing the function keys).

[kwevej]

Hi,
edit /etc/default/grub

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sudo gedit /etc/default/grub 

change

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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"

After that don't forget to run

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sudo update-grub

& reboot

If it doesn't help, try there:

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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor"

[artemhp]

Hello, I have the same problem too.
Laptop Samsung X11, Nvidia 7400 Go

[kwevej]

Hello, I have the same problem too.
Laptop Samsung X11, Nvidia 7400 Go

Have u tried my previous post?

[hernando]

I'll try that at home. That worked for me with mint 8.
Now in mint 9 (and in ubunt 10.04) my computer freezes when i try to change brithness with the Fn+bright key. Totally freezes the computer, and i have to force shutdown.

I'll try your post.
Thanks.