[ltp] T520 volume keys

Wade Curry linux-thinkpad@linux-thinkpad.org
Sat, 7 May 2011 21:14:35 -0700

Ole Langbehn(neurolabs.de@gmail.com) wrote:
> Hi,
> On 04.05.2011 19:44, Robert Tomsick wrote:
> > Try passing "acpi_os=Linux" as one of your boot params.
> thanks, but that had no effect.

I checked out the Documentation directory in the kernel source for
kernel parameters.  Apparently two different items are being mixed
up here.  I saw:


I think the second one is the right one.

My W500 had a working mute button, and the volume buttons would at
least unmute, but not affect the volume otherwise.  Now it has
stopped working after doing an emerge @world (running Funtoo
linux).  Adding these didn't help my box at all. :(

xev shows that the buttons are still sending signals.  The keys
didn't die; it's software.

Wade Curry