Update to http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1.1-oneiric/
fixed this issue on Lenovo B570e.
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https://bugs.launchpad.net/bugs/883900
Title:
Lenovo z570 brightness control
Sorry, I managed to solve this problem only by installing 3.1.1. Or so I
thought. Now I can't replicate the bug in any kernel provided by Ubuntu
(3.0.0-12 and 3.0.0-13 in proposed), so I'm not so sure about 3.1.1 fix
either. Must be a good karma or something.
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It was a matter of setting a BIOS option for me. I have R60. Lenovo has the
following document describe various ThinkPad BIOS settings (X40, but that
doesn't matter in this case). It sheds light on all the sources of all kinds of
beeps. Specifically, for volume keys it's an option in the
