Re: Bug on ibm-acpi and hal regarding brightness keys

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On Thu, 05 Jul 2007, Chris Hanson wrote:
> Henrique de Moraes Holschuh wrote:
> > On Thu, 05 Jul 2007, Chris Hanson wrote:
> >> Henrique de Moraes Holschuh wrote:
> >>> It is also a good idea to read the ACPI specification 3.0b, and check what
> >>> is the ACPI standard way of dealing with display brightness. If Lenovo is
> >>> supporting that one, it is best to just switch to it on Lenovo thinkpads.
> >> According to the spec, the standard way to control this is through the 
> >> _BCL, _BCM, and _BQC methods on the LCD device.  None of these methods 
> >> is implemented in my T60.
> > 
> > Look at the SSDTs.
> 
> Thanks.
> 
> The brightness controls _are_ implemented in SSDT1.  Maybe they even 
> work.  How do I test that?

The ACPI video module is supposed to know how to talk to them...  and it
shouldn't be too broken since 2.6.21.

-- 
  "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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