Latitude D620 LCD brightness issue

[Michael E Brown]

On Fri, May 04, 2007 at 01:05:00PM +0200, Arnaud Quette wrote:
> Running an Ubuntu feisty (x86), I've installed (rebuilded debs)
> libsmbios 0.13.6 and hal 0.5.9 (packages backported from the gutsy
> pool).
> 
> I've then tried to play a bit with the libsmbios provided tools, and
> ended up with an LCD brightness issues. The Fn keys (up / down)
> doesn't work (nothing impacted). Only the Fn Auto switch the LCD from

It is odd that the FN- keys dont work. There is no way to disable this
from software that I know of.

> a dark to a light setting. But being on AC power, the screen is really
> dark, and I can't find a way to address it through dellLcdBrightness
> (-v only affect the battery setting!).

You can also go into BIOS setup to change this, in addition to the
previously-posted fix.

It may be that HAL isnt properly distinguishing between ac/battery modes
and might need to be enhanced/fixed.
--
Michael