[ltp] T61/intel: LCD brightness

[Henrique de Moraes Holschuh]

On Mon, 29 Oct 2007, Theodore Tso wrote:
> On Sun, Oct 28, 2007 at 06:42:38PM -0200, Henrique de Moraes Holschuh wrote:
> > On Sun, 28 Oct 2007, Marius Gedminas wrote:
> > > Could it be that my laptop has 15 levels instead of 7, and I need a
> > > thinkpad-acpi upgrade?  (I currently have thinkpad-acpi version 0.14,
> > > according to modinfo.)
> > 
> > Yes.  Since you are using Ubuntu, you must use thinkpad-acpi 0.18. 0.14
> > cannot handle 16 levels, because Ubuntu insists on messing with the display
> > brightness through thinkpad-acpi.
> > 
> > You need a very recent kernel (2.6.22 recommended as 2.6.23.1 is broken),
> > and thinkpad-acpi 0.18.
> 
> Also make sure you either have disabled CONFIG_ACPI_VIDEO, or build
> thinkpad-acpi as module and then make sure it is loaded with the
> parameter brightness_enable=1.

That suggests that the 2.6.22 video module is broken?

-- 
  "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