1

Cannot adjust brightness on my Thinkpad T430.

This doesn't work anymore: Ubuntu 10.04 Cant Adjust brightness on my lenovo Thinkpad?

Is there another way to fix this?

0

Already found a solution. Add a acpi_osi='!Windows 2012' option to /etc/default/grub:

GRUB_CMDLINE_LINUX_DEFAULT="splash quiet acpi_osi='!Windows 2012'"

And then run:

sudo update-grub

Source: https://help.ubuntu.com/community/AsusZenbookPrime#Ubuntu_13.04

0

Update your Kernel should fix this:

sudo apt-get dist-upgrade

Bug is fixed:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1183856

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