Scarlett 18i20 USB, USB Audio

[GitHub issues - opened]

alsa-project/alsa-topology-conf issue #2 was opened from juanpc2018:

Problems:
$ alsamixer
does Not allow to change SampleRate,
only clock source.

Focusrite Scarlett 18i20mk2 USB, USB Audio
has a Control Software only for OSX and Windows.
works in Wine/PlayOnMac,
but does Not detect the USB device.
sometimes even the Control Software also does Not detect the USB in OSX or Windows.
anyway...

i go to OSX, change the Sample Rate.
96khz,

reboot and go back to Kubuntu 21.10,
Kubuntu changes the SR to 44.1Khz at boot,

problems #2.
SampleRateConverter does Not work well,

if i play a 48khz file in VLC,
does Not play in 44.1Khz SR.

jackd2 can change SampleRate No problems.
VLC has jack output,
but Firefox does Not, unless compied from source with the option in config

anyway..
need to create:
/etc/asound.conf



$ aplay -L

hw:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    Direct hardware device without any conversions
plughw:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    Hardware device with all software conversions
sysdefault:CARD=USB
    Scarlett 18i20 USB, USB Audio
    Default Audio Device
front:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    Front output / input
surround21:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=USB,DEV=0
    Scarlett 18i20 USB, USB Audio
    Direct sample mixing device
usbstream:CARD=USB
    Scarlett 18i20 USB
    USB Stream Output

Issue URL     : https://github.com/alsa-project/alsa-topology-conf/issues/2
Repository URL: https://github.com/alsa-project/alsa-topology-conf