[ubuntu-studio-users] using apogee duet audio interface

[Mike Holstein]

On Fri, Oct 25, 2013 at 11:12 AM, Eddie Coffey <ecoffey57 at gmail.com> wrote:

> I have been researching interfaces that work in linux. I tried the duet
> because i had access to it. I should have realized at the start that the
> prob was that the usb bus is not supplying power to the device. when you
> plug it in, the apogee logo lights up, but thats it. the unit is not
> actually powered up. it sends a signal to the pc, which lets jack and alsa
> recognize it. but no signal is sent back to the device, which means there
> is not driver support for it. Before i actually buy an interface, I'll make
> sure that it has linux support. Sorry i wasted everyone's time, but i want
> to thank everyone for their help.
>

you're not wasting time.. but, you are troubleshooting many things at once,
and making assumptions. you cant assume that the USB bus power is causing
any issue here... what do i do??

when trying new gear, i load up one or more of the following live CD's..
AVlinux, ubntustudio's live CD's from the last LTS (12.04) the current
release (now 13.10) and (when available) the upcoming testing version (soon
to be the 14.04 LTS).. i do this to remove variables. takes my config and
customization out of the equation, and allows me to try anything knowing
that none of my changes will be saved or be able to permanently break
anything. i try with both JACK and pulse only. i try and play a known good
audio file in a player that im familiar with. then, i try getting
*anything* into the machine through the device into *anything*, not
limiting to ardour or whatever. no need to use a condenser microphone
requiring phantom power at this stage when you are just getting used to the
device. use the line out from a device that you know works and understand
well. use a dynamic mic that you know works.

the way i read your particular scenario is that you are just getting
familiar with linux and JACK and ardour, and you dont know anything about
that device you are borrowing. i would use the internal sound card to test
a scenario that works, then switch to the apogee for testing it in
particular.

also, if you are purchasing, consider not looking for "devices that work in
linux".. consider a device with official support for linux. RME has this as
far as i know. otherwise, there are great devices that will work with
linux, but "linux" doesnt, and cant gurantee support. cheers!




>
>
> On Fri, Oct 25, 2013 at 9:38 AM, Merejo Herm <merejomusic at gmail.com>wrote:
>
>> I can Understand why such a Company like Apogee could actually not want
>> to provide coding so their usb hardware would work with Linux.Apple and
>> Apogee go hand on Hand!
>> However,if you want to take it to the next level.here are some
>> interesting sites.
>> Before buying an Audio interfacer I would check compatibility with
>> Linux.Some Fire-wire or Pci Interfacers work fine with linux.
>>
>> http://www.abc-pcb.com/?page_id=187
>> http://wiki.linuxaudio.org/wiki/hardware_support?redirect=1
>>
>>
>>  On Fri, Oct 25, 2013 at 4:50 AM, Pablo Fernandez <pablo.fbus at gmail.com>wrote:
>>
>>>
>>> >something i've noticed in ardour, is if i create a mono track, i barely
>>> get a signal, if a >create a stereo track, i get so much signal i can't
>>> control it. i can run the volume on the >track all the way to zero and it
>>> still clips, so any ideas?
>>>
>>> If you create a mono track, the default connection for the input is "In
>>> 1" ("system: capture_1" in jack terminology). If you create a stereo track,
>>> the default inputs are In1/In2 for each channel, so I suspect that you need
>>> a mono track with "In2" as the input (You can change this in the Mixer
>>> Window). AND decrease the level in alsamixer if it clips.
>>>
>>> The track fader doesn't control the input signal level. You have to
>>> adapt the signal before it reaches ardour (via hardware and/or alsamixer).
>>>
>>>
>>>
>>>
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>>
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-- 
MH

mikeholstein.info <http://www.mikeholstein.info/>
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