Jose Luis Rivas wrote:
I installed Debian Sid x86_64 in a HP dv6000t and since the
> beginning the Fn-F7 and Fn-F8 keys are not working, I found that
> another Function keys like locking are working perfectly, in fact,
> Fn-F9 and above are recognized but not this two I need for brightness
> control.
I always read that this keys works as should on Ubuntu 7.04 and I
> tested it with the liveCD and does works, I tried with `nv' and `vesa'
> video drivers as well and that's not the problem.
I don't know if this is somewhat related to the `vbetool' segfault bug
> #420279 [0].
There must be something that controls the brightness right now but I
> believe it's not applied since when I unplug the AC the brightness
> dimm's... And the inverse when I plug the AC back/
Some interesting behaviour there, thanks for reporting. I can't seem to
find anything related to HP backlight in acpi-support in Ubuntu either,
so I'm wondering what controls the backlight in Ubuntu. Perhaps Debian
does something that intercepts signals that are normally intercepted by
the BIOS or something. I have no clue, and no means of debugging this
either, so we'll have to work around it.
Please do the following two things:
(1) Run "acpi_listen" and then press these keys, and tell me what this
shows?
(2) Check out if you can control your laptop's brightness using some
kind of command. If I understand it correctly, the dv6000t has nVidia
GeForce Go 7400 video, which nvclock doesn't support. Try using the
"smartdimmer" tool. And are there files in /sys/class/backlight?
If you can provide me with a command (2) and a set of key values (1), I
might be able to get acpi-support to do this for you.
Cheers,
Bart
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