** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2047184
Title:
Audio device is not available, instead it shows dummy output in the
settings
Status in HWE Next:
New
Status in OEM Priority Project:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.5 source package in Jammy:
Fix Committed
Status in linux source package in Noble:
In Progress
Status in linux-oem-6.5 source package in Noble:
Invalid
Bug description:
[Impact]
Audio device is not available, instead it shows dummy output in the settings
[Fix]
SOF driver looks for a config which both sample width and valid bits are both
32 bits. However, the config in NHLT table is 32-bit sample width and 24-bit
valid bits. Should ignore the valid bits in NHLT when the sample width is 32
bits.
Confirmed the below commit in v6.7-rc4 fix the issue
7b4c93a50a2e ALSA: hda: intel-nhlt: Ignore vbps when looking for DMIC 32 bps
format
[Test case]
1. check audio input/output on the system
2. System can play and record audio normally
[Where problems could occur]
When the samples assumed to be vbps=32 then the 'noise' introduced by the
lower two bits (channel number) have no real life implication on audio quality.
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