Monday, December 26, 2011

I have been struggling to set up a reliable Ubuntu-based (11.10) recording system at home using my spec'd out ThinkPad R61. Here's what I've come up with so far:
  • Ubuntu 11.10s libffado installation is broken (it's based on svn-1985, which has a known segfault issue), so compile libffado from source (it's painless). Visit www.ffado.org for instructions.
  • Ricoh IEEE1394 controllers aren't anywhere near as bad as people make them out to be. Mine can handle recording 10 tracks @ 96k for over two hours with no xruns.
  • HPET permissions need to be fixed (http://www.linuxmusicians.com/viewtopic.php?f=27&t=2800).
  • My laptop + FP10 seems pretty stable with `jackd -ch -d firewire -D -n3 -p512 -r96000`
  • JACK's priority setting is broken in Ubuntu 11.10 (at the very least), as in it does nothing and reports success. It doesn't seem to matter, though, as I'm no longer getting xruns at default priority.
  • You don't need a realtime or lowlatency kernel ppa in order for the RT flag to work, but installing rtirq and putting rtc and firewire at the top of the list might help.
  • I'd already found Ubuntu's prepackaging of Ardour to be buggy and outdated. I highly suggest donating to the project (www.ardour.org), which will allow you to download pre-compiled binaries. They're very stable.
I'd taken to running jackd from the CLI (as opposed to using qjackctl), since it was always segfaulting. Now that I'm no longer using a prepackaged libffado, this shouldn't matter.

Lastly, it seems jackd killed my trackpad on one occasion. My trackpoint still worked fine. I'll have to sort that one out.

EDIT 1: Remove pulse audio. It's safe to apt-get remove the package, even if you're using GNOME instead of the default GUI. Pulse audio interfered with MIDI in funky ways, which prevented me from using Korg's nanoKONTROL with Ardour.

Wednesday, June 22, 2011

Nerd Alert


This post is a reference for when I reload my computer.

jackd
qjackctl
ardour
rosegarden (unless I've got ardour3)
hydrogen
patchage
autotalent
zita-at1
zita-reverb
jamin
yoshimi
alsa modular synth

Finally, check https://wiki.ubuntu.com/UbuntuStudio/PackageList for additional LADSPA plugin packages.

Thursday, March 31, 2011

she said where are you
he didn't answer
he was invisible
she stretched her arms out
and he was captured
so foiled by her wiles