[Ardour-Users] Experience Focusrite Scarlett 18i20

[Ralf Mardorf]

On Sun, 20 Aug 2017 22:19:03 +0200, Mirko Horstmann wrote:
>I use my 18i8 only as an audio interface and QasMixer allowed me to
>get rid of all the default routings.

The 18i20 2nd Gen fortunately has got no zero-latency default routing
and unfortunately there is no way to change the routing using Linux or
iOS.

On Sun, 20 Aug 2017 20:57:33 +0200, Tim wrote:
>18i20

Not 18i8. The Linux mixer available for the Scarlett family does not
work for the 18i20 2nd Gen. Maybe you just need to add the 18i20's
identifier to the source code, but since I don't need it, I don't waste
my time with testing it.

[rocketmouse at archlinux ~]$ aplay -l | grep USB
card 4: USB [Scarlett 18i20 USB], device 0: USB Audio [USB Audio]
[rocketmouse at archlinux ~]$ amixer -c4 controls
numid=3,iface=MIXER,name='ADAT Validity'
numid=4,iface=MIXER,name='Clock Source'
numid=1,iface=MIXER,name='Internal Validity'
numid=2,iface=MIXER,name='S/PDIF Validity'
[rocketmouse at archlinux ~]$ amixer -c4 contents
numid=3,iface=MIXER,name='ADAT Validity'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=4,iface=MIXER,name='Clock Source'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Internal'
  ; Item #1 'S/PDIF'
  ; Item #2 'ADAT'
  : values=0
numid=1,iface=MIXER,name='Internal Validity'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=2,iface=MIXER,name='S/PDIF Validity'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
[rocketmouse at archlinux ~]$ alsamixer
┌───────────────────────────────────────────────────────────────────────────────────── AlsaMixer v1.1.4 ─────────────────────────────────────────────────────────────────────────────────────┐
│ Card: Scarlett 18i20 USB                                                                                                                                           F1:  Help               │
│ Chip: USB Mixer                                                                                                                                                    F2:  System information │
│ View: F3: Playback  F4: Capture  F5:[All]                                                                                                                          F6:  Select sound card  │
│ Item: ADAT Validity                                                                                                                                                Esc: Exit               │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                               ┌──┐             Internal             ┌──┐               ┌──┐                                                                │
│                                                               │OO│                                  │OO│               │OO│                                                                │
│                                                               └──┘                                  └──┘               └──┘                                                                │
│                                                       <  ADAT Validity   >   Clock Source    Internal Validity   S/PDIF Validity                                                           │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
│                                                                                                                                                                                            │
└────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘