On 09/08/2016 17:48, Marco Donnarumma wrote:
Hi Marco,
I've 8i6 and I use it with Ubuntu 14.10.
Sometimes I've experienced a similar issue (I don't know if it is your case or not). I've checked all the volumes with alsa mixer, and I've found that sometimes some buses (which are used for monitor out or main out) are low in volume or even mute or misrouted (i.e. not "connected" to monitor out).

Unfortunately, the alsa mixer interface are not the best way to change those parameters, because the 8i6 has so many channel and buses that alsa mixer becomes confusing to use!

Cheers
Dear all,

I have been using my Focusrite Scarlett 8i6 for a couple of years without issues on a Linux Mint 17 laptop. I can use the sound card only via Qjackctl (no ALSA out of the box).

Now, I have a new computer (shuttle xpc slim) on which I installed Linux Mint 18.
The sound card is recognised by both Jack and cat /proc/asound/cards.
It even correctly appears in the system sound preferences, which did not happen in Mint 17.

However, while the inputs work, there's no output. I've tested with a bunch of audio software, such as Pd, Ardour, Hydrogen, etc..

Interestingly, if, immediately after testing with Mint 18, I plug the sound card back to my Mint 17 laptop, at first, the sound card does not produce output. I have to power off the sound card and re-plug it, then it works.


I would need this to work only with Jack, I'm not looking for an ALSA fix.

I know in the past three years there has been a few ALSA patches to make this range of Focusrite work, and I think most of those patches are now in the mainline kernel. Although I'm not familiar with this.

Does anything I could try come to mind?

[SYSTEM INFO]
Mint 18
kernel: 4.4.0-31-lowlatency
alsa-base 1.0.25
libasound, etc.. 1.1.0


thanks in advance!
best wishes,

--
Marco Donnarumma, Ph.D
Performing bodies, sound and machines
Universität der Künste Berlin
http://marcodonnarumma.com



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