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[Bug 1889146] [NEW] Loss of USB device causes zita-ajbridge to run cpu at 100% and hang

 

Public bug reported:

zita-ajbridge allows bridging extra alsa devices to jackd as a client.
If that extra device is a USB device and is unplugged, the bridge uses
100% cpu and slows the rest of the system to a crawl. The only way to
stop this process is with a kill -9.

However, there is already a bugfix release upstream. The release notes for version 0.8.4 (which is already in Groovy) are only one line:
"zita-ajbridge 0.8.4     (05/04/2020)

* Fixed 100% CPU on sound card disconnect.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: zita-ajbridge 0.8.2-1
ProcVersionSignature: Ubuntu 5.4.0-42.46-lowlatency 5.4.44
Uname: Linux 5.4.0-42-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Mon Jul 27 20:28:00 2020
InstallationDate: Installed on 2020-04-23 (96 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200422)
SourcePackage: zita-ajbridge
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: zita-ajbridge (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal third-party-packages

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https://bugs.launchpad.net/bugs/1889146

Title:
  Loss of USB device causes zita-ajbridge to run cpu at 100% and hang

Status in zita-ajbridge package in Ubuntu:
  New

Bug description:
  zita-ajbridge allows bridging extra alsa devices to jackd as a client.
  If that extra device is a USB device and is unplugged, the bridge uses
  100% cpu and slows the rest of the system to a crawl. The only way to
  stop this process is with a kill -9.

  However, there is already a bugfix release upstream. The release notes for version 0.8.4 (which is already in Groovy) are only one line:
  "zita-ajbridge 0.8.4     (05/04/2020)

  * Fixed 100% CPU on sound card disconnect.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: zita-ajbridge 0.8.2-1
  ProcVersionSignature: Ubuntu 5.4.0-42.46-lowlatency 5.4.44
  Uname: Linux 5.4.0-42-lowlatency x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Mon Jul 27 20:28:00 2020
  InstallationDate: Installed on 2020-04-23 (96 days ago)
  InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200422)
  SourcePackage: zita-ajbridge
  UpgradeStatus: No upgrade log present (probably fresh install)

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