hello everyone,
I just got an old Sound Devices Usbpre (not the "2", the old one), and i
would like to use it with gnu-linux (ubuntu).
I couldn't make it work properly, neither using jack nor pulseaudio. Both
of them recognize it but jack won't start and selecting the device in
pulseaudio and playing a file with vlc only results in glitches and
scratches (you can hear that they somehow correnspond to the song being
played, but they're actually just weird noises).
I have a quite messy ubuntu 10.10 installation, with many tweakings to the
audio stack. So i switched to another pc with an ubuntu 11.04 fresh
install, and the problem is the same. I checked in alsa mixer, the device
is recognized and there is just one control for pcm volume. I tried playing
a wave file direcly using aplay, and i get the same very bad sound, even
though with the -vv option i can se the signal level bar following the
music signal.
The device has two inputs (with several connectors each) and two analog
outputs, two spdif outputs and two headphone outputs (apparently not
working), but only the volume control is shown in alsa mixer. Also, there
are some controls on the board (phantom, input selection, mono switch, plus
the various volume knobs) and a led meter, but none of them seems to
respond.
I couldn't find resources searching on the web, just some old occurences
referring to people trying to write a module for it, and lot of stuff about
usbpre 2.
Is there any hope i can use the device in linux?
If it might help, here is the result of ulils_alsa-info.sh on the 11.04
machine:
http://www.alsa-project.org/db/?f=7c22a99a7d024c0d8a54807b1065882d0e21c3cd
thanks in advance!
athos
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