FOR 12.10

Question

8

How do I get brightness working on a Lenovo IdeaPad Yoga?

rated 0 times [ 8] [ 0] / answers: 1 / hits: 12172 / 2 Years ago, wed, july 13, 2022, 9:34:29

I have a Lenovo IdeaPad Yoga. It's been working flawlessly with Windows 8 - 9 hour battery life, awesome touchscreen, 4-second boot times.

So obviously I wanted to try Ubuntu 12.10. Well, I downloaded it and installed it - but I couldn't change the brightness!

These hotkeys work in Windows but not in Ubuntu - and none of the solutions others have proposed in other similar questions with Lenovo laptops have worked.

How can I make my brightness hotkeys work?

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icielight

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answered 2 Years ago tialmes · Accepted Answer

FOR 12.10

Okay, I found an answer in this page.

This solved my brightness problems permanently:

sudo gedit /etc/default/grub

You will find this line in the new opened window:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Change it to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Save and close the window and type this in the terminal:

sudo update-grub

and reboot.

FOR 13.04

Add the acpi_backlight=vendor to your grub default command line

Run the update-grub command

blacklist the ideapad_laptop by adding "blacklist ideapad_laptop" to your /etc/modprobe.d/blacklist.conf file.

Reboot