APPLIED(B,C): [SRU][B/C/D/unstable][PATCH v2 0/1] Fix the constant noise of headphone on lenovo X1 machines

[Khaled Elmously]

Note, this bug isn't actually nominated for B or C

On 2019-02-22 08:19:44 , Khaled Elmously wrote:
> On 2019-02-22 18:33:03 , Hui Wang wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1817263
> > 
> > In the V2, I regenerated the patch based on the master-next branch of Disco, only the
> > 0001-xxx.patch for Disco is changed in the V2, other patches are same as V1.
> > 
> > [Impact]
> > It is reported that there is constant noise on lenovo X1 machines, and after
> > investigating, I found this issue will happen on all Lenovo machines with the
> > codec alc285.
> > 
> > [Fix]
> > According to Realtek's comment, the noise comes from PC peeb in, after
> > disable this pin or disable the passthrough of this pin will fix the
> > problem.
> > 
> > [Test Case]
> > After applying this patch, we play sound on Lenovo P52, P72, X1 carbon and X1
> > Yoda2, no noise anymore. And this patch is confirmed to work by many other
> > users too (https://bugzilla.redhat.com/show_bug.cgi?id=1660581,
> > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805079/comments/38).
> > 
> > [Regression Potential]
> > Low. This patch only apply to several lenovo machines, and it is tested
> > by many users already.
> > 
> > 
> > Hui Wang (1):
> >   ALSA: hda/realtek: Disable PC beep in passthrough on alc285
> > 
> >  sound/pci/hda/patch_realtek.c | 14 +++++++++++++-
> >  1 file changed, 13 insertions(+), 1 deletion(-)
> > 
> > -- 
> > 2.17.1
> > 
> > 
> > -- 
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