Ubuntu
pipewire package

  1. Noble (24.04)
  2. Bug #2067338
  3. Comment #0

Comment 0 for bug 2067338

Revision history for this message
Erich Eickmeyer (eeickmeyer) wrote : Long SysEx messages are skipped by Midi-Bridge

[Impact]

A regression in 1.0.5 has been found in PipeWire and is fixed in 1.0.7.

Users of certain MIDI controllers that rely on long SysEx messages are unable to function properly. I noticed this when reconnecting my Beheringer X-Touch (shown here: https://nextcloud.ericheickmeyer.com/index.php/s/k9Aa9Bq7RDD5DoR) after the installation of 24.04 LTS, it could not operate properly. Disabling pipewire-jack and running ardour's internal jack functionality caused it to work properly.

Investigation consisted of backporting 1.0.7 via a PPA to Noble which fixed the bug. Bug was confirmed via https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/4005. Solving bug via SRU will consist of creating patches from the commits that fixed the issue in upstream PipeWire.

[Test Case]

Using Ubuntu Studio

 * Connect a MIDI controller that uses long SysEx messages, such as a Behringer X-Touch, to the system.

 * Star Ardour

 * In Preferences > Control Surfaces > Mackie, select the MIDI controller for "Surface sends via:" and "Surface receives via:".

Expected: complete control population and function
Actual: Only display colors are populated

[What could go wrong]

It is possible that these patches could cause other problems outside of long SysEx messages in MIDI controllers. However, these patches were developed by the lead developer of PipeWire, Wim Taymans, and I tend to trust that he knows exactly what he's doing with this kind of thing.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: pipewire 1.0.5-1
ProcVersionSignature: Ubuntu 6.8.0-31.31.1-lowlatency 6.8.1
Uname: Linux 6.8.0-31-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Mon May 27 20:35:49 2024
InstallationDate: Installed on 2024-04-15 (42 days ago)
InstallationMedia: Ubuntu-Studio 24.04 LTS "Noble Numbat" - Beta amd64 (20240410.2)
SourcePackage: pipewire
UpgradeStatus: No upgrade log present (probably fresh install)