Comment 779 for bug 1958019
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#779 |
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0e1f616
(Get the code!)
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 :(