On Mon, May 11, 2015 at 08:26:58PM +0200, Dominik Brodowski wrote: Also CCing Matthew who came up with the original version of the version change and Liam who is one of Intel's audio experts. > According to an off-list discussion, the sound breakage (and not just some > jack detection issue) seems to be caused due to alsa-lib being too old. Right, it needs the userspace configuration files installing. > The matter is further complicated by the issue that the driver > asks for some firmware blob intel/IntcPP01.bin which (at least) I > cannot find anywhere. As previously advised that firmware is optional. > Under the no-regression rule, this means that either b1ef29725865 needs > to be reverted or we need to find another solution to this matter, such as > an override. And I think it is needed for longer than just for 4.1, as it > will continue to be cause regressions on quite recent userspace. Does this also affect other behaviour of the system? I'd be pretty unhappy if it introduce power regressions for example, I mostly don't use audio on my laptops but I care a lot about how long it'll run disconnected. It *is* quite a new laptop and my experience installing was very much that it was in bringup (though quite a bit of this was userspace).
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