>From FFADO maintainer:
Bug: More xruns under new Firewire kernel stack compared to the old
stack.
Suggestion:
The final comment in this bug report suggests that an upgrade to
Ubuntu 11.04 resolved the problem. The bug should therefore be
closed.
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https://bugs.launchpad.net/bugs/649542
Title:
New firewire stack makes more FFADO XRUNs than old firewire stack.
Status in libffado package in Ubuntu:
New
Bug description:
I have a firewire audio device, M-Audio Firewire Solo. It works fine
in Lucid but not so good in Marveric because of much FFADO XRUNs in
jackd2.
My IEEE 1394 chipset is below,
FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04)
$ dpkg -l | grep ffado
ii ffado-dbus-server 2.0.1+svn1856-1ubuntu1 FFADO D-Bus server
ii ffado-mixer-qt4 2.0.1+svn1856-1ubuntu1 FFADO D-Bus mixer
applets (QT4)
ii ffado-tools 2.0.1+svn1856-1ubuntu1 FFADO debugging
and firmware tools
ii libffado2 2.0.1+svn1856-1ubuntu1 FFADO API
At first, the kernel modules for this device is "New Firewire Stack"
(so-called by FFADO developer), firewire_ohci, firewire_core and
crc_itu_t. Then I get much FFADO XRuns,
Secondly I use "Old Firewire Stack", ohci1394, raw1394, ieee1394 with
the commands of rmmod and modprobe, these modules are standard in
Lucid. Then I got a few FFADO XRUNs.
In both ways, I play the same music in the same sequencer.
In detail, please refer to the logs of "ffado-diag" and "jackd -v"
I'LL attach. The "_old" means the old firewire stack and the "_new"
means new one.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libffado2 2.0.1+svn1856-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Tue Sep 28 13:22:50 2010
InstallationMedia: Ubuntu-Studio 10.10 "Maverick Meerkat" - Beta i386
(20100902.1)
ProcEnviron:
LANG=ja_JP.utf8
SHELL=/bin/bash
SourcePackage: libffado
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