Comment 781 for bug 1958019

Alas, you are correct. The good news is that this is being worked on for
the Legion... But it seems to be for the latest model of the Legion
(which does haven't Cirrus Logic, it has TI smart amps IIRC). I have the
2nd to latest (which I think came out less than a year ago).

Hopefully from there they can work on my model... And perhaps Lenovo can
begin to branch out from there.

It's really too early to guess where things will go, but I'm hopeful.

On 5/20/23 5:01 PM, <email address hidden> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208555
>
> Alexis Cuglietta (<email address hidden>) changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |<email address hidden>
>
> --- Comment #763 from Alexis Cuglietta (<email address hidden>) ---
> I do have exactly the same issue on a ThinkBook 13x Gen 2 running Ubuntu
> 23.04
> (kernels 6.2.0 and 6.3.3): no sound from the internal speakers, although
> sound
> works when using the external 3.5mm jack. The laptop has the same chips:
> ALC287/3306 codec and CS35L41/CSC3551 amplifier.
>
> journalctl displays the following message:
> "Error: ACPI _DSD Properties are missing for HID CSC3551"
>
> I have extracted the DST tables using ACPICA and did not see any reference to
> the 2 parameters required by the CS35L41 driver: "cirrus" and "dev-index".
>
> My conclusion is there is probably some work required from the Lenovo BIOS
> team
> :(
>