[ltp] Re: [ibm-acpi-devel] thinkpad-acpi release 0.24-20100220 uploaded to ibm-acpi.sf.net

Henrique de Moraes Holschuh linux-thinkpad@linux-thinkpad.org
Mon, 22 Feb 2010 21:59:56 -0300

On Mon, 22 Feb 2010, Pedro Ribeiro wrote:
> > To add more .. did some experimenting. I found something interesting. So
> > if acpi_osi=Linux is passed on the kernel command line (this is done in
> > the kernel for T61 & T400 & T500) .. but when I do this. The proc
> > interface doesn't actually work anymore. It will light up the mute
> > button light though on my X301 & turn it off. But no effect to the
> > volume.
> The T400 thing was requested by me because of stupid userspace tools.

Never *EVER* mess things in the kernel or in the firmware because of
userspace crap.  Always fix it right, or it *will* come back to bite your
head off.

> I guess that now it is not necessary?

That depends.  What is "broken" without OSI=Linux on a recent kernel?  I can
actually change the driver behaviour when OSI=Linux is either enabled or
disabled to compensate, but it has to be whitelist-based...

> I'm going to compile and test the kernel without the acpi_osi=Linux
> and see what happens.

Please, that would be very helpful.

  "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