libasound2 not finding usb sound card
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
alsa-lib (Ubuntu) |
Fix Released
|
Medium
|
Daniel T Chen | ||
Maverick |
Fix Released
|
High
|
Daniel T Chen |
Bug Description
-- StableReleaseUp
Impact statement: Due to changes in alsa-lib configuration file parsing (an overly-optimistic short-circuit) as shipped in Maverick final, certain virtual hw devices and audio cards that lack a definition file in /usr/share/
Fix: It is worth noting that, to properly address both bugs mentioned above, both source changes and default configuration file changes must be made. These changes are contained in debian/
Minimal patch: http://
TEST CASE: One test case is provided in (the entirety of) bug 637947. Another is given below.
Regression potential: There is a *very* low probability that (native) ALSA applications may not be equipped to handle the additional information exposed by extended hints (enabled by debian/
-- Original defect report follows --
When upgrading to libasound2 1.0.23-1ubuntu2 my usb sound card stop being discovered by programs like aplay, mumble.
aplay -L will not list the usb sound devices anymore.
The attachment will show my problem before and after installing the latest version of libasound2.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libasound2 1.0.22-0ubuntu7
ProcVersionSign
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelMo
Architecture: amd64
Date: Thu Sep 30 15:02:12 2010
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: alsa-lib
tags: | added: regression-release |
Changed in alsa-lib (Ubuntu Maverick): | |
milestone: | none → maverick-updates |
Changed in alsa-lib (Ubuntu Maverick): | |
status: | New → Triaged |
importance: | Undecided → High |
description: | updated |
Changed in alsa-lib (Ubuntu Maverick): | |
assignee: | nobody → Daniel T Chen (crimsun) |
tags: |
added: verification-done removed: verification-needed |
tags: | added: testcase |
Please attach respective `dmesg|tail', too.