7 Jun
2013
7 Jun
'13
5:07 p.m.
Hi,
I did not use Alsamixer (and I can not test it right now) so I can not
say how Alsamixer should look like.
I used the device (sucessfully) in the following two ways:
1) Select device in pulseaudio and play back from youtube or whatever source.
2) Select device in jack and make some sounds from supercollider.
Here, I could check that I got 8/8 I/O-channels up to 96 kHz sampling
rate working. This was encouraging enough for me to buy my own UCX.
Actually, a friend told me that he can use more channels in CC-mode
with the latest firmware BUT connect to a mac-system. I did not test
whether this is also true for linux, maybe the usb-audio standard does
not support more than 8/8 channels.
Best,
Florian
Quoting Max <abonnements(a)revolwear.com>om>:
Hi, that sounds promising.
I have the UCX running in CC mode, and I also see it in the
Alsamixer with only one control, the master volume.
so that part isn't the problem.
the fix of the alsa /sound/usb/mixer.c is in kernel 3.8 which i have
on the system.
Good to know, thanks!
http://mailman.alsa-project.org/pipermail/alsa-devel/2013-January/058998.ht…
however: If i select this device in some alsa software i get
horrible crackles (I tried 44100 and 48000 Hz, they both give me
different kind of crackles).
What do you do to get useful sound out of it?
Max
Am 07.06.2013 um 01:47 schrieb Florian Hanisch <fhanisch(a)uni-potsdam.de>de>:
Hi,
I use the ff ucx via USB. As far as I know, it is not possible to
use it via firewire.
I getting reasonable sound results using the usb class compliance
mode, you have to make sure that this mode is enabled on the device
(it is NOT by default).
The ALSA driver then recognizes the device. If you enter
aplay -l
in a terminal, you get a list with all devices available to alsa.
If it does not appear there, try the comand
dmesg
to look for error messages of the alsa kernel module. If I do that,
I find a message
usbcore: registered new interface driver snd-usb-audio
indicating that the interface is working. Then, the device is
available in pulse-audio and also jack, you can choose it there.
I should add the following: My system (and in particular the alsa
kernel module) is not up to date. I am still using an old
customized version, where I fixed a bug by hand (getting help from
the alsa list). As far as I remember, this bug was fixed so that
the device should work with the standard alsa kernel module.
However, I never tested it, maybe I find time to do that during the
weekend.
Best,
Florian
Quoting Max <abonnements(a)revolwear.com>om>:
> Is there anyone who is running a Fireface UCX under Linux
> successfully? (either via USB or Firewire)?
> It has a USB Class Compliant mode for Audio Device Class 2
>
> http://www.rme-audio.de/forum/viewtopic.php?pid=86665#p86665
>
> I get nothing but crackles.
>
> m.