[ltp] ACPI video module on Thinkpad R61 8918

Henrique de Moraes Holschuh linux-thinkpad@linux-thinkpad.org
Wed, 10 Oct 2007 18:31:55 -0300


On Wed, 10 Oct 2007, Christian Birchinger wrote:
> On Wed, Oct 10, 2007 at 06:06:48PM -0300, Henrique de Moraes Holschuh wrote:
> > On Wed, 10 Oct 2007, Christian Birchinger wrote:
> > > "current" does not get updated when the Fn+Home/End hotkeys or
> > > the special /proc/acpi/ibm/brightness from the thinkpad-acpi
> > > module gets used to adjust brightness. On boot it shows "0"
> > > but the display is not dark.
> > 
> > This is a bug somewhere, but it *could* be in the thinkpad firmware. Make
> > sure you are using the latest one.
> 
> BIOS is 1.21-1.06 and 1.22-1.06 is available. But i think the
> 1.06 part (Embedded Controller version) is the relevant part and
> that isn't newer.

No, the bug would be in the ACPI AML code, which is part of the BIOS. So the
update might indeed be relevant.

> Well i'm installing the 1.22 version now for the hell of it.
> I'll add a comment if it really changes the situation.

-- 
  "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