Comment 7 for bug 1399611

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Merlijn Sebrechts (merlijn-sebrechts) wrote : Re: Screen brightness not working acer aspire 5742

Thanks. I updated my bios using freedos (which was surprisingly easy to do!).

sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
V1.30
08/13/2012

This does not fix the problem. If I restart my laptop without the workaround, the effect is still the same. When I change brightness, I see the slider changing, but the brightness stays the same.