Bug 2015863

Summary: Fix UCM code for better pipewire interoperability
Product: Red Hat Enterprise Linux 9 Reporter: Jaroslav Kysela <jkysela>
Component: alsa-libAssignee: Jaroslav Kysela <jkysela>
Status: CLOSED WONTFIX QA Contact: Ken Benoit <kbenoit>
Severity: medium Docs Contact: Jana Heves <jsvarova>
Priority: unspecified    
Version: 9.0CC: hwkernel-mgr, lkuprova, lmanasko, pvlasin, smoroney
Target Milestone: betaKeywords: Triaged
Target Release: 9.0 Beta   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
.`alsa-lib` now correctly handles audio devices that use UCM A bug in the `alsa-lib` package caused incorrect parsing of the internal Use Case Manager (UCM) identifier. Consequently, some audio devices that used the UCM configuration were not detected or they did not function correctly. The problem occurred more often when the system used the `pipewire` sound service. With the new release of RHEL 9, the problem has been fixed by updating the `alsa-lib` library.
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Last Closed: 2021-11-09 16:47:50 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1977253    
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Description Jaroslav Kysela 2021-10-20 09:36:26 UTC
The pipewire may not be able to open the UCM ALSA devices after few iterations, because the internal UCM identifier is incorrectly parsed.

Upstream fix: https://github.com/alsa-project/alsa-lib/commit/4a52ae4c329ae17117375a4b85b80f37994a4044

Comment 11 Jaroslav Kysela 2021-11-09 16:47:50 UTC
Thank you. Closing as "won't fix". The alsa-lib upgrade with the bugfix is planned in bug#2019740.