[alsa-devel] [RFC PATCH] Inverted internal mic

David Henningsson david.henningsson at canonical.com
Tue Jun 19 09:43:07 CEST 2012

On 06/19/2012 05:07 AM, Eliot Blennerhassett wrote:
> David Henningsson<david.henningsson<at>  canonical.com>  writes:
>> On 02/28/2012 02:22 PM, Takashi Iwai wrote:
>>> At Tue, 28 Feb 2012 14:07:59 +0100,
>>> David Henningsson wrote:
>>> Is there a way we can
>>>> know the corresponding processing coefficients to set for ALC268 and
>>>> ALC272X as well?
>>> AFAIK, no, it was specific to the codec model.
>> Ok, then we can only hope for Kailang to supply this information if
>> possible. And if not possible we could attempt the workaround (when/if
>> we agree on it...) for these devices as well?
> Greetings,
> Any chance that there has been any progress on this?
> I have a machine with dmic and ALC272X (details below) that exhibits this
> problem, and can test any proposed patch.

We have a patch in for the Thinkpad U300s, but that one had a Conexant 
I haven't had time to start working on kernel patches for the Realtek 
ones yet, but meanwhile, I'm tracking known machines here:


David Henningsson, Canonical Ltd.

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