13.04 brightness on ThinkPad t430

Question

Cannot adjust brightness on my Thinkpad T430.

Is there another way to fix this?

Probably related to this bug: bugs.launchpad.net/ubuntu/+source/linux/+bug/1098216 Should be fixed in the latest kernels from raring, you should also try the workaround. — LiveWireBT, Oct 5 '13 at 13:43

Kostya · Accepted Answer · 2013-10-06 18:37:56Z

1

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

answered Oct 6 '13 at 18:37

Kostya

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cebor · Accepted Answer · 2013-10-12 09:46:59Z

0

Update your Kernel should fix this:

sudo apt-get dist-upgrade

Bug is fixed:

answered Oct 12 '13 at 9:46

cebor

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2 Answers 2