[ltp] Thinkpad **30 series, Linux 3.7 and brightness keys

Theodore Ts'o linux-thinkpad@linux-thinkpad.org
Mon, 18 Feb 2013 14:15:50 -0500

On Mon, Feb 18, 2013 at 06:32:39PM +0100, Yves-Alexis Perez wrote:
> it seems that there's an issue with brightness keys handling in the
> 2012/2013 Thinkpads when using the 3.7+ kernels.
> Basically, since Linux replies to the _OSI("Windows 2012") call from
> acpi, it behaves badly. There's an upstream bug at
> https://bugzilla.kernel.org/show_bug.cgi?id=51231 with a lot of details.

For what it's worth, I have an X230, with the 2.06 version of the BIOS and the
1.10 version of the firmware, running a 3.8-rc6 kernel plus ext4 development
patches (3.8.0-rc6-00041-gf3a1e5d).  i am using Xfce4 (none of that GNOME crap
for me :-), and the brightness keys (Fn-F8/Fn-F9) work just _fine_.

I've added a note to that effect to the Bugzilla entry; hopefully this
will help folks debug the issue.

       	    	    	       	    - Ted