Reported as affecting oneiric on dupe bug #853838.
Several kernel patches are discussed on bug #38750, and while they're confirmed fixes it appears there is concern of a possible regression they cause, which is why they're not yet upstream.
I'm guessing the best patch is this one: http://cgit.freedesktop.org/~jbarnes/linux/commit/?h=fix-pch-refclk&id=99eb6a01e5ac6cf28aadc64e6ff346939874dfd2
It's hosted in this tree currently: http://cgit.freedesktop.org/~jbarnes/linux?h=fix-pch-refclk
Once this patch is officially upstream it would be worthwhile to backport it to oneiric and natty.
Reported as affecting oneiric on dupe bug #853838.
Several kernel patches are discussed on bug #38750, and while they're confirmed fixes it appears there is concern of a possible regression they cause, which is why they're not yet upstream.
I'm guessing the best patch is this one: cgit.freedeskto p.org/~ jbarnes/ linux/commit/ ?h=fix- pch-refclk& id=99eb6a01e5ac 6cf28aadc64e6ff 346939874dfd2
http://
It's hosted in this tree currently: cgit.freedeskto p.org/~ jbarnes/ linux?h= fix-pch- refclk
http://
Once this patch is officially upstream it would be worthwhile to backport it to oneiric and natty.