APPLIED[Unstable]: [SRU][Cosmic/Bionic/OEM-B][PATCH 0/1] The front MIC can't work on the Lenovo M715

Seth Forshee seth.forshee at
Mon Oct 15 15:44:09 UTC 2018

On Thu, Oct 11, 2018 at 11:29:44AM +0800, Hui Wang wrote:
> BugLink:
> [Impact]
> On the machine of Lenovo M715, there are 2 audio jacks on the front panel,
> one of them is microphone jack. When we plug a micrphone into it, the system
> can't detect this microphone and can't record sound via this microphone too.
> [Fix]
> Apply the quirk of ALC294_FIXUP_LENOVO_MIC_LOCATION, the alsa driver will
> assign a different name to this audio jack, then pulseaudio can handle this
> jack and everything works well.
> [Test Case]
> plug a microphone to this jack and record sound, system can detect the
> microphone and can record sound.
> [Regression Potential]
> Very low, this pin configuration is specific to the machine of
> M715 so far, will not affect other machines.

Applied to unstable/master, thanks!

More information about the kernel-team mailing list