[Bug 257827] Re: brightness changes twice when using hotkeys

[Stefan Bader]

Hi Michael, Guglielmo,

if you use the latest Intrepid kernel from -proposed, could you try
adding either

acpi_backlight=video
or
acpi_backlight=vendor

to your kernel parameters, when you boot? In theory one or the other
should work for you.

-- 
brightness changes twice when using hotkeys
https://bugs.launchpad.net/bugs/257827
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