Comment 783 for bug 1958019

I haven't been able to get this working properly. I was able to get
sound with this approach a few months ago, but I was getting "AMP short"
errors, which I'm sure can't be good.

On 6/5/23 06:45, <email address hidden> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208555
>
> --- Comment #766 from Thomas Gfeller (<email address hidden>) ---
> (In reply to Cameron Berkenpas from comment #765)
>> 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
>>> :(
>>>
> I just found
>
> https://superuser.com/questions/1719920/no-sound-from-internal-speakers-on-laptop-but-headphone-jack-and-hdmi-works
> with the link
> https://gist.github.com/lamperez/862763881c0e1c812392b5574727f6ff
>
> It sounds very much like this problem right here. Can we build a workaround
> for
> our machines? Extracting the respective data from Windows and injecting it
> into
> our Linux istallations?
>