[LAU] Please help with audio interfaces that keep changing after reboot

Jeremy jeremy at autostatic.com
Sat May 8 09:24:19 UTC 2010


david wrote:
> Jeremy wrote:
>> Philipp wrote:
>>> Excerpts from Geoff King's message of 2010-05-08 01:17:39 +0200:
>>>> Hello,
>>>> I have problem that I've been trying to figure out with no luck.  The
>>>> audio interface keeps changing for example:
>>>>
>>>> Today:  Maudio 24/96 is hw:1 and Midisport 4x4 Anniv is hw:0.
>>>> Yesterday before reboot: Maudio 24/96 is hw:0 and Midisport 4x4
>>>> Anniv is hw:1
>>>> etc, back and forth, each reboot...
>>>> I usually use qjackctl and have to keep changing the presets with
>>>> settings which is annoying.
>>>>
>>>> I would greatly appreciate it if someone could provide me some clues
>>>> or links on how to fix this?
>>>>
>>>> I'm Using Fedora 12 w CCRMA.
>>>>
>>>> thanks, Geoff
>>> The easiest solution might be, using my setup as example:
>>>
>>> aplay -l
>>> **** List of PLAYBACK Hardware Devices ****
>>> card 0: UA25 [UA-25], device 0: USB Audio [USB Audio]
>>>   Subdevices: 0/1
>>>   Subdevice #0: subdevice #0
>>> card 1: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
>>>   Subdevices: 1/1
>>>   Subdevice #0: subdevice #0
>>>
>>> So I use hw:UA25 in jack instead of hw:0
>>> Jack always uses this device if it can find it, it always just works.
>>> If you have multiple other devices you need hardwired you might need
>>> some other trickery, but I guess in your case it's a simple matter of
>>> figuring out the right name for the maudio interface.
>>
>> And maybe it's helpful to mention that you have to enter the cardname
>> manually in QJackCtl the very first time you configure it this way, you
>> can't select it. Out of my head the cardname for a M-Audio 24/96 is
>> 'M2496' so in QJackCtl you can try 'hw:M2496' in the Interfaces field
>> (without the quotes of course).
> 
> The one on my laptop is "USB Audio Codec". QJackCTL won't accept it,
> name has spaces ...
> 

Then your card name is probably 'default' and QJackCtl should accept
'hw:default' then.

Best,

Jeremy


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