Re: [ibm-acpi-devel] ThinkPad X220 volume level unsupported

[Henrique de M. H. <hm...@hm...>]

On Sat, 29 Oct 2011, David Batson wrote:
> Regarding the ThinkPad X220.
> 
> cat /proc/acpi/ibm/volume reports: level unsupported.

Yes. You do not have an extra console audio controller, just an extra mute
gate.  It is unsupported because it does not exist at all.  You can control
volume through the usual soundcard mixers.

> Other events such as thinklight and video report: level supported, but
> still tpb will not show any onscreen display (OSD).  I know that xosd is
> working on my system from a test program I ran.

tbp requires NVRAM snooping.  Lenovo may have disabled that interface.
Anyway, tbp doesn't use thinkpad-acpi at all, so I can't help with that.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh