Hello everyone.
2 Firewire problems with ALSAfirewire.
1. Firewire Midi was working fine with kernel 5.10 with Reaper. Then obviously a lot changed with the Firewire Stack.
The midi output from Reaper has not changed according to it's developer - Justin. The problem is direct ALSA-Midi.
We tested the midi app from www.alsa-project.org/alsa-doc/alsa-lib/_2test_2rawmidi_8c-example.html#a0 yesterday and it freezes Debian and just breaks Arch with kernel 6.15
Thread at Reaper Bugs forum:
https://forum.cockos.com/showthread.php?t=300278
Has low level ALSA-Midi API changed?
2. If using Pipewire-Jack with ALSAfirewire the Reaper midi output works fine but unfortunately Pipewire adds 90ms delay when playing back through any Firewire interface compared with an onboard soundcard.
The pipewire dev Wim Tayman, says it's ALSAfirewire fault but I proved it is not - see thread:
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues?show=eyJpaWQiOiI0N...
The ALSA recording and playback is confirmed by my tests to be working under 10ms RTT with Echo, Motu and Bebop interfaces.
Is this problem related to first? Low level communication error?
Cheers - and let me know if I can help in any way, although I'm not a programmer.
P. S. I hope you can read my post as I loaded up K-9 eMail client so as to deliver text only.
-- Martin Armsby