brightness control

Has anybody found a way to adjust brightness on a HP laptop G50 or similar? Tried alot of how tos with any success.
 
I have heard of ways to controls this through sysctl commands, but when I tried some of them but did not work.
 
Have you tried to kldload 'acpi_hp'?
 
Yes:
Code:
<FreeBSD 8.0-RELEASE-p2> [pcbsd:~] # kldload acpi_hp
 
There is no point in loading acpi_hp if nothing is showed in console after that.
Show output of related sysctls for acpi_video. Also show output, if any, after loading acpi_hp.
 
Ime@ can you please give me info on how you were able to get your brightness control working on your computer would be helpful
 
TCE: On my Thinkpad it "just works" out of the box.
I don't have a HP notebook.
 
Try this with kldload() and acpi_video().

Code:
#kldload acpi_video

#sysctl hw.acpi.video
(This will list the variables and their settings this will let you see what "levels" of brightness are supported)

Code:
#sysctl hw.acpi.video.<device>.brightness=<level>
(where <device> is a device, can be crt0 crt1 lcd0 etc.) and level is an acceptable level)

This works for me, but I still don't know how to key map this functionality to the FN+F7 and FN+F8 keys.
 
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