Re: [PATCH] Fwd: Re: /proc/acpi/ibm/volume broken on X20 since 2.6.22

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On Mon, 30 Jul 2007, Andreas Messer wrote:
> Ok , I see my mistake, but it works. Don't know why. Next thing I dont 
> understand: there is no /proc/acpi/ibm/cmos file? But cmos commands require 
> this (or not?)

According to thinkpad-acpi logs you posted in another thread, your
thinkpad doesn't have a known way to issue CMOS commands, so ibm/cmos
doesn't get installed.

Can you send me a full firmware dump by private email?

Using a _very_ recent version of acpi tools and dmidecode (such as
those in latest stable Debian Ubuntu or Fedora), could you send me
the output of dmidecode (feel free to remove serial numbers and UUIDs)
and "acpidump -a" ?

> > echo 0x30 0x01 > /proc/acpi/ibm/ecdump  (set volume to 1, mute off)
> > echo 0x30 0x07 > /proc/acpi/ibm/ecdump  (set volume to 7, mute off)
> > echo 0x30 0x45 > /proc/acpi/ibm/ecdump  (set volume to 5, mute ON)
> > ...
> > etc?
> >
> > Does it work?  Does it error out with an -EIO ?
> 
> Doing this, there is no error, but also nothing happens. I can read the value 
> afterwards from /proc/acpi/ibm/volume, but it doesn't reflects the
> real value (e.g. it says mute, but i can hear sounds from the speaker)

So, your thinkpad requires NVRAM-based control, or something else
completely different.

I don't understand why it stopped working after 2.6.21, however :(

-- 
  "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

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