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Bug 2015863

Summary:	Fix UCM code for better pipewire interoperability
Product:	Red Hat Enterprise Linux 9	Reporter:	Jaroslav Kysela <jkysela>
Component:	alsa-lib	Assignee:	Jaroslav Kysela <jkysela>
Status:	CLOSED WONTFIX	QA Contact:	Ken Benoit <kbenoit>
Severity:	medium	Docs Contact:	Jana Heves <jsvarova>
Priority:	unspecified
Version:	9.0	CC:	hwkernel-mgr, lkuprova, lmanasko, pvlasin, smoroney
Target Milestone:	beta	Keywords:	Triaged
Target Release:	9.0 Beta	Flags:	pm-rhel: mirror+
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.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 16:47:50 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1977253
Bug Blocks:

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.