** Changed in: linux (Ubuntu Impish)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1955686
Title:
alsa/sdw: fix the audio sdw codec parsing logic in the acpi table
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Won't Fix
Status in linux-oem-5.14 source package in Focal:
In Progress
Status in linux source package in Impish:
Fix Committed
Status in linux-oem-5.14 source package in Impish:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-5.14 source package in Jammy:
Invalid
Bug description:
[Impact]
we have a couple of Dell ADL laptops which have sdw audio, after upgrading
the BIOS to 0.1.4 or above, the sdw audio can't work anymore, the driver
can't parse the codec layout from ACPI table anymore.
[Fix]
Backport two patches from upstream.
[Test]
Boot the patched kernel on those machines both with old bios and
new bios, all work well, the sdw audio could initialize and the
audio function work well.
[Where problems could occur]
If it could introduce regression, it will be on the acpi sdw codec
parsing, so some sdw audio machines could fail to find the codec, then
the whole audio function fails. But this possibility is very low, we
already tested the patches on both old bios and new bios.
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