Brightness Hot Keys Don’t Work On Lenovo IdeaPad Yoga running Ubuntu 12.10 | How to Fix This Issue

Brightness Hot Keys not working on Lenovo laptops running Ubuntu 12.10 Quantal Quetzal or Ubuntu 12.04 Precise Pangolin is a classic issue.

In this article I will show you how to fix the brighness hot keys issue on Lenovo IdeaPad Yoga permanently.

This worked also on a Lenovo ThinkPad X1 Carbon and Lenovo ThinkPad T430 running Ubuntu.

All you have to do is:

Open /etc/default/grub file in your favourite text editor, with root privileges:

$ gksudo gedit /etc/default/grub

Modify the following line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

To look like this (Add acpi_backlight=vendor in the quotes, after quiet splash):

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Blacklist “ideapad_laptop” (thanks savagejen) for the tip:

$ sudo sh -c 'echo "blacklist ideapad_laptop" >> /etc/modprobe.d/blacklist.conf'

Update grub, in order to apply the new setting

$ sudo update-grub

This is it. Reboot and Enjoy.

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6 comments on “Brightness Hot Keys Don’t Work On Lenovo IdeaPad Yoga running Ubuntu 12.10 | How to Fix This Issue
  1. savagejen says:

    There’s an additional step for the yoga. You need to blacklist the ideapad_laptop by adding “blacklist ideapad_laptop” to your /etc/modprobe.d/blacklist.conf file. Then reboot.

    • john says:

      Dear Savagejen and Geekster

      ubuntu 12.04.3 lts precise pangolin on lenovo ideapad yoga 11s

      That works a treat at solving the problem. Terrific.

      do you have any leads on how I can get the wireless running on my machine – another issue.
      Xubuntu

      thanks,
      JN

  2. Stefan says:

    I have Lenovo B570 and this settings works only from
    Brithness & Lock fron System Settings, but for the Hot Keys.
    Is there another setting for Lenovo B570 Ideapad

  3. Ben says:

    By any chance, does anybody know how to get the brightness hotkeys to work on a fujitsu T902 running 13.10?

  4. fissledizzle says:

    After installation of TLP the brightness control is failing again. Ideas?

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