Control: tag -1 moreinfo On Fri, 2013-02-22 at 11:31 +0800, David M Smith wrote: > Package: src:linux > Version: 3.7.8-1~experimental.1 > Severity: important > > > If I boot the linux-image-3.6-trunk-amd64, the brightness controls work just > fine. > > Whenever I boot the linux-image-3.7-trunk-amd64 my Fn+F4 and Fn+F5 brightness > controls on my laptop do not work. > > According to xev, the events are getting registered but the brightness of the > LCD screen doesn't change. [...] > [ 8.537615] ACPI: Video Device [PEGP] (multi-head: yes rom: no post: no) > [ 8.537709] input: Video Bus as > /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:2b/LNXVIDEO:00/input/input11 > [ 8.537835] [Firmware Bug]: Duplicate ACPI video bus devices for the same > VGA controller, please try module parameter "video.allow_duplicates=1"if the > current driver doesn't work. [...]
This is interesting. Can you try adding 'video.allow_duplicates=1' to the kernel command line, as suggested? Ben. -- Ben Hutchings Sturgeon's Law: Ninety percent of everything is crap.
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