https://bugzilla.kernel.org/show_bug.cgi?id=14216


Robert Moore <robert.mo...@intel.com> changed:

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--- Comment #29 from Marek Lotke <lol...@wp.pl>  2010-04-05 09:31:18 ---
What I have tried so far and failed:
- many acpi_osi settings
- changing dsdt, method _INI where they test different _OSI strings to actually
force the same value as is used for Windows 2001
- using compal-laptop module (with force=1). but as far as I can see the ntuc0
service manual (linked above) says that the register (0xB9) used by
compal-laptop is actually read only 

Official compal support replied that "Compal would not support any Linux
drivers/Aps.". Maybe we need to put some more pressure on Compal support? How
about sending some emails from intel.com domain? :-)

BTW. Brightness keys work in Windows XP but because at reboot brightness level
is reset to the max. value I could not find out what is changed in acpidump
output. Is there a windows acpidump equivalent?

--- Comment #30 from Robert Moore <robert.mo...@intel.com>  2010-04-05 15:15:05 
---
Use iASL -g to get the ACPI tables on Windows. For Win 7, you need the latest
version of the compiler, 20100331.

--- Comment #31 from Marek Lotke <lol...@wp.pl>  2010-04-06 08:55:20 ---
The 4 files created by iasl -g are identical before and after brightness change
on windows xp.
I'm not sure if iasl -g exports 'EC region' data...

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