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

[Kleber Souza]

On 2/22/19 9:54 AM, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1817263
>
> [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(-)
>

These patches have already been applied to {bionic,cosmic}/master-next branches.

Thanks,
Kleber