[Bug 573984] Re: Screen brightness can not be adjusted in Lucid with Intel Arrandale graphics

[sas]

SOLVED (for my laptop at least - Acer Aspire 5740)

The trick was to add "acpi_osi=" (without the quotation marks) to the
GRUB parameters. Setting the parameter to an empty string means that no
OS is reported to the BIOS. By default acpi_osi is set to Windows NT. I
had previously tried "acpi_osi=Linux" but it didn't work, apparently it
had to be an empty string.

The brightness keys work now :-)

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Screen brightness can not be adjusted in Lucid with Intel Arrandale graphics
https://bugs.launchpad.net/bugs/573984
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