Comment 626 for bug 1958019

There's no patch for your laptop yet.

Assuming your sound bar is initialized through verbs (I suspect it is),
you'll need to find the verb sequence yourself:
https://github.com/thiagotei/linux-realtek-alc287/tree/cameron

Once there's a working verb sequence, a patch can be created.

On 5/23/22 04:50, <email address hidden> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208555
>
> --- Comment #611 from singo (<email address hidden>) ---
> Hello everyone,
>
> I really appreciate this thread and all of the solutions that have been
> produced for this issue. Thanks to everyone contributing, especially Cameron
> Berkenpas who has been very helpful to a number of users and the main driving
> force for fixes:)
>
> Now to my issue: I own a Lenovo Yoga 7i 15ITL05 82AC with the ALC287.
> Currently
> it runs Ubuntu 22.04. LTS with the included 5.15 Kernel. Before I have run
> Pop_OS 21.04. and 22.04. With all these distros, the sound worked partially
> but
> never fully. The experience is the same as many other users here, where there
> would only be sound coming out the from the downward firing speakers, but not
> from the soundbar above the keyboard, which are the bass speakers judging by
> the tinny sound I get now. The sound works beautifully in Windows, since the
> lower end frequencies can be replayed.
>
> Quite honestly, I've lost the overview over this thread and am not so sure
> which patch I should apply. I've tried manually update my Ubuntu 22.04. to
> the
> mainline 5.17 Kernel, which worked OS-wise but didn't change sound. My hope
> was
> that the sound patches have been included in that Kernel, but it seems
> they're
> only working for the Legion 7.
>
> Could someone point me to the right patch or verbs that have to be applied
> for
> my Lenovo model in order for the bass speakers to work? Maybe someone has
> figured it out for this particular case?
>
> Much thanks in advance.
>
> Here's my alsa-info:
>
> http://alsa-project.org/db/?f=ad3990bed59a24417ea6429250275012611a0302
>