Re: Brightness control stopped working in 2.6.26

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On Fri, 01 Aug 2008, Miloslav Semler wrote:
> Brightness is regulated, but with it is also switched screen
> (LCD/CRT/s-video out).
> Initial brightness 14%
> <fn+home> black screen (CRT is now working)
> <fn+home> black screen, crt is no working (probably works s-video)
> <fn+home> screen is ok, brightness 57%
> <fn+home> black screen (CRT is now working)
> <fn+home> black screen, crt is no working (probably works s-video)
> <fn+home> screen is ok, brightness 100%.
> 
> fn+end do same, but brightness goes down.
> 
> Fn+F8 (CRT/LCD/s-video switching) does not react. I have latest bios
> version.

The last time I saw something like this, it was a lot of kernels ago
with an extremely broken version of the ACPI video module loaded that
did have the ACPI events of brighness and mode switch inverted...

Please test in single user mode, text console, and make sure HAL and
ACPID are not loaded.

Also, I don't think I have the typical information I use to check things
on the Z61e, so if you could send me the output of "acpidump" and the
output of "dmidecode" (remove serial number and UUID), it might help.

-- 
  "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

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