[Ardour-Users] focusrite-mixer -- was Ardour Monitoring

Ralf Mardorf ralf.mardorf at alice-dsl.net
Wed Mar 29 08:40:33 PDT 2017

On Wed, 29 Mar 2017 17:06:16 +0200, Robin Gareus wrote:

There's nothing special, I'm just using this and other suffixes for 2 reasons:

1. I don't need to edit the bootloader config each time I upgrade a kernel.

[rocketmouse at archlinux ~]$ grep vmlinuz-linux-rt /boot/syslinux/syslinux.cfg
    LINUX ../vmlinuz-linux-rt-pussytoes
    LINUX ../vmlinuz-linux-rt-persianrug
[rocketmouse at archlinux ~]$ grep upgraded\ linux-rt /var/log/pacman.log | tail -1
[2017-03-28 16:52] [ALPM] upgraded linux-rt-pussytoes (4.9.18_rt13-1 -> 4.9.18_rt14-1)

2. As a mnemonic, for e.g. the kernel used to test an audio interface or to remember the kernel I used first, when I switched from AMD to Intel.

[rocketmouse at archlinux ~]$ grep presonus\ \( /var/log/pacman.log 
[2016-12-24 08:12] [ALPM] installed linux-rt-presonus (4.9_rt1-1)
[2017-02-19 19:16] [ALPM] removed linux-rt-presonus (4.9_rt1-1)
[rocketmouse at archlinux ~]$ grep celeron\ \( /var/log/pacman.log 
[2017-02-19 22:16] [ALPM] installed linux-rt-celeron (4.9.11_rt9-1)
[2017-03-08 06:39] [ALPM] removed linux-rt-celeron (4.9.11_rt9-1)

>Well, there's no kernel config option, it's part of SND_USB.
>Does `lsusb` show the device ID as 1235:800c ?


>How about `amixer`

[rocketmouse at archlinux ~]$ lsusb | grep N
Bus 002 Device 007: ID 1235:8201 Focusrite-Novation 
[rocketmouse at archlinux ~]$ aplay -l | grep 18i20
card 4: USB [Scarlett 18i20 USB], device 0: USB Audio [USB Audio]
[rocketmouse at archlinux ~]$ amixer -c 4 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 ~]$


"Michael" described Floyd as "an idiot savant", and added, "Give him any two numbers, and he can multiply them in his head, just like that." Homer, testing Floyd, said, "Five times nine", and Floyd instantly responded "Forty-five", which impressed Homer.

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