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

[Ralf Mardorf]

On Wed, 24 Jun 2015 11:14:49 -0700, Bruno Ruviaro wrote:
>Probably not too helpful, but in any case I can report I have
>experienced a similar "mysterious" problem with a PreSonus VSL 1818 in
>Ubuntu.

For the OP it worked one time. It can't fit exactly to Chris' guess [1],
but I anyway would install a Windows for testing purpose, run Windows
and reboot to Linux. You perhaps should test different kernels. Did you
install any upgrades? Take a look at the history, perhaps there is
something audio related, resp. a kernel upgarde and you maybe could
downgrade from the package cache or maybe another kernel still is
in /boot. I've got bad luck with one audio card, all channels show up
as jackd ports, but not all provide an audio signal. However, those
channels never worked on Linux, while they work on FreeBSD and Win XP.
Since the OP's card worked one time, there might be a way to get it
working again. Some times we miss the forest for the trees. I'm a Linux
user and installed FreeBSD and Win XP for testing purpose. It doesn't
harm and those installs could be removed after testing. It still could
be a handling error. It's strange that it worked one time.

[1]
Begin forwarded message:

Date: Tue, 23 Jun 2015 17:21:57 -0500
From: "Chris Caudle" <chris at chriscaudle.org>
To: ardour-users at lists.ardour.org
Subject: Re: [Ardour-Users] trouble with retaining microphone
connectivity over multiple sessions in Ardou

[snip]

Is there any chance that the mic preamps require the use of the VSL
software to configure and enable them, and that the Windows driver
stores the last used setting for you, so if you reboot after using
Windows the settings are kept, but when you power down the settings are
lost?

Kind of a long shot, but given that the behavior changes between when
you first install and subsequent times you power up your computer it's
worth asking.