[Ardour-Users] trouble with retaining microphone connectivity over multiple sessions in Ardou

Cameron Metcalf podeas at gmail.com
Sun Jun 14 19:37:24 PDT 2015

Thanks for the quick reply Ralf. I'll give it a shot.

On Jun 14, 2015 10:31 PM, "Ralf Mardorf" <ralf.mardorf at alice-dsl.net> wrote:

> Hi,
> I would turn off on-board sound by the BIOS settings and then ensure
> that the sound card/s always get/s the same card number/s at startup.
> This is how my /etc/modprobe.d/alsa-base.conf looks like:
>   # ALSA module ordering
>   options snd slots=snd_hdspm,snd_ice1712,snd_ice1712
> Information can be found at
> http://alsa.opensrc.org/MultipleCards#The_newer_.22slots.3D.22_method :
> "How to choose a particular order for multiple installed cards
> Which card is card number 0, 1 and so is by default determined by
> module load order. This is particularly useful to choose which card
> becomes the default one.
> In theory therefore it is possible to choose which of several installed
> cards becomes card 0, the default one, by ensuring its driver module is
> loaded first. (Note: this assumes that each sound card requires a
> different driver. If you have two soundcards of the same type, please
> skip to the next section.)
> There are two ways to achieve this, the "old" index= option of the card
> driver module, and the alternative (and new) slots= option of the snd
> module.
> [snip]
> The newer "slots=" method
> Alternatively, you can use the slot option instead of the index options:
> options snd slots=snd-interwave,snd-ens1371
> Then, the first slot (#0) is reserved for snd-interwave driver, and the
> second (#1) for snd-ens1371. You can omit index option in each driver
> if slots option is used (although you can still have them at the same
> time as long as they don't conflict).
> According to ALSA-Configuration.txt, The slots option is especially
> useful for avoiding the possible hot-plugging and the resultant slot
> conflict. For example, in the case above again, the first two slots are
> already reserved. If any other driver (e.g. snd-usb-audio) is loaded
> before snd-interwave or snd-ens1371, it will be assigned to the third
> or later slot."
> Regards,
> Ralf
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