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.
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.
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
Use this driver: https://github.com/lwfinger/rtl8723au
Use git to clone it and follow the instructions:
cd rtl8723au/
make
sudo make install
sudo modprobe 8723au
Works great on my Yoga 13
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
By any chance, does anybody know how to get the brightness hotkeys to work on a fujitsu T902 running 13.10?
After installation of TLP the brightness control is failing again. Ideas?