| 2020-07-28 03:34:39 |
Len Ovens |
bug |
|
|
added bug |
| 2020-07-28 04:08:36 |
Erich Eickmeyer |
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) |
[Impact]
* 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.
[Test Case]
* Using (Ubuntu) Studio Controls, start Jack with built-in sound card and
a USB device.
* Unplug USB device. Bridge will now use 100% CPU process and stall the
system.
[Regression Potential]
* The upstream version has one single change consisting of the bugfix to
prevent the 100% CPU usage on disconnect. While it is possible that
this fix doesn't do what it advertises, the regression potential here
is slim to none.
[Additional Info]
* As already noted, this fix is already in Groovy.
Original bug report follows:
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) |
|
| 2020-07-28 04:08:49 |
Erich Eickmeyer |
nominated for series |
|
Ubuntu Groovy |
|
| 2020-07-28 04:08:49 |
Erich Eickmeyer |
bug task added |
|
zita-ajbridge (Ubuntu Groovy) |
|
| 2020-07-28 04:08:49 |
Erich Eickmeyer |
nominated for series |
|
Ubuntu Focal |
|
| 2020-07-28 04:08:49 |
Erich Eickmeyer |
bug task added |
|
zita-ajbridge (Ubuntu Focal) |
|
| 2020-07-28 04:09:22 |
Erich Eickmeyer |
zita-ajbridge (Ubuntu Focal): status |
New |
Confirmed |
|
| 2020-07-28 04:09:28 |
Erich Eickmeyer |
zita-ajbridge (Ubuntu Groovy): status |
New |
Fix Released |
|
| 2020-07-28 04:09:32 |
Erich Eickmeyer |
zita-ajbridge (Ubuntu Focal): importance |
Undecided |
High |
|
| 2020-07-28 04:09:34 |
Erich Eickmeyer |
zita-ajbridge (Ubuntu Focal): assignee |
|
Erich Eickmeyer (eeickmeyer) |
|
| 2020-07-28 04:18:04 |
Erich Eickmeyer |
summary |
Loss of USB device causes zita-ajbridge to run cpu at 100% and hang |
[SRU] Loss of USB device causes zita-ajbridge to run cpu at 100% and hang |
|
| 2020-07-28 16:18:37 |
Erich Eickmeyer |
zita-ajbridge (Ubuntu Focal): status |
Confirmed |
In Progress |
|
| 2020-07-28 16:18:52 |
Erich Eickmeyer |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2020-07-28 18:51:00 |
Brian Murray |
zita-ajbridge (Ubuntu Focal): status |
In Progress |
Fix Committed |
|
| 2020-07-28 18:51:03 |
Brian Murray |
bug |
|
|
added subscriber SRU Verification |
| 2020-07-28 18:51:08 |
Brian Murray |
tags |
amd64 apport-bug focal third-party-packages |
amd64 apport-bug focal third-party-packages verification-needed verification-needed-focal |
|
| 2020-07-29 01:34:38 |
Len Ovens |
tags |
amd64 apport-bug focal third-party-packages verification-needed verification-needed-focal |
amd64 apport-bug focal third-party-packages verification-done verification-done-focal |
|
| 2020-08-10 13:33:45 |
Launchpad Janitor |
zita-ajbridge (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2020-08-10 13:33:48 |
Łukasz Zemczak |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
