[ltp] Information for R61/T61 owners

[Henrique de Moraes Holschuh]

On Tue, 30 Oct 2007, Yves-Alexis Perez wrote:
> First, thanks for this clarification for us *61 users.
> 
> On mar, 2007-10-30 at 15:29 -0200, Henrique de Moraes Holschuh wrote:
> > 3. Brighness support *requires* either thinkpad-acpi 0.18 with the
> >    brightness_enable=1 parameter, or a properly working ACPI video
> > module.
> >    The use of the ACPI video module instead of thinkpad-acpi is
> > recommended.
> 
> What do you mean by "properly working ACPI video module"

I mean one without bugs...

> Currently (running 2.6.24-rc1 from ibm-acpi waiting/queued git tree) it
> doesn't work with hal (multiple /sys/class/backlight/acpi_video are
> reported, wich confuse hal)

The very idea of confusing HAL with many backlight devices means the HAL (or
distro, they might have been the ones that broke HAL) people are too lazy
for their own good, and instead of doing things right, they are still going
for the fast, short, and obviously wrong path.

That said, the video module is b0rked and reporting backlight interfaces for
stuff that is not active.

Len just sent a batch of stuff for 2.6.24 to Linus, try applying those as
well.  It might fix video.  Try it.

-- 
  "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