hi everyone,
in last year’s May I came up with the topic of how to use the
soundcraft notepad 12fx mixer and usb audio interface in linux (
https://lists.linuxaudio.org/archives/linux-audio-user/2019-May/111931.html
).
now, I have just found out that somebody obviously took serious efforts
to make the device fully usable with linux, and I wanted to share my
findings to you, as some of you seemed to own such an interface:
https://github.com/lack/soundcraft-utils
I have just tested it with arch linux (installing the pip-tools package
from AUR as prerequisite) - it works very well.
may it be of help to you.
have a good day!
with best wishes
christoph
Getting my Ultralite AVB working on Linux Mint 19.3 has been quite
a struggle and I've learnt a few things along the way, which may
save others some wondering.
Ignore any thoughts of USB power management causing any issue.
The device never uses any USB power, as confirmed with an inline
USB V/A meter.
Firmware more recent than 1.3.2+520 suffers from the 'bitcrusher'
effect, where audio can be heard for about 30 seconds, until it
fades to junk while appearing on higher number channels, until
it does the same again. That firmware is pre Touch Consoleâ„¢.
Firmware and release notes in the Ultralite AVB section here:
https://motu.com/techsupport/technotes/firmwarechangelog
A great deal of good information over at the Linux Musicians forum:
https://linuxmusicians.com/viewtopic.php?f=6&t=18046
(Thanks to Eric Schoster for pointing me to that one.)
One gem is that it can be set to class compliant mode with:
curl --data 'json={"value":"UAC"}' IP address/datastore/host/mode
curl --data 'json={"value":"24"}' IP address/datastore/host/maxUSBToHost
(Replace "IP address" with its address on your network)
Change to its proprietary mode with:
curl --data 'json={"value":"USB2"}' IP address/datastore/host/mode
curl --data 'json={"value":"64"}' IP address/datastore/host/maxUSBToHost
On my current hardware (i7-8700K) the Ultralite takes 27 seconds
from first light in the display to showing detail in the display
and there's a further 20 second delay before any activity shows
up in a terminal window running 'tail -f /var/log/syslog'.
There are very many messages like:
'clock source 1 is not valid, cannot use'
Yesterday I was seeing 240 of those in blocks of 40, with each
block followed by:
'[pulseaudio] module-alsa-card.c: Failed to find a working profile.'
and etc.
Today, after trying the latest firmware, seeing the bitcrusher
effect and reverting to 1.3.2+520 again, I only see two complete
blocks and the reporting stops about half way through the third
block. Qjackctl will then start the server, on either hw:AVB or
hw:AVB,0. It always seems to need changing to the one of those
it isn't set to. :)
I can only think that my dual booting and using it on Windows 10
caused the trouble I was seeing when using it on Linux afterwards.
I still can't use anything which isn't 'jack aware', but I can
live with that, for now. VLC offers 13 'Ultralite AVB, USB Audio'
devices to chose from, including "Direct sample snooping device".
Linux, generally, doesn't seem to maintain an optical output if
a player app stops playing...
--
John.
I have used UbuntuStudio for quite a while. And, when IO plug in a USB
audio device it magically appears on the port list (for example in Carla).
I find myself attempting to set up a Debian 10 system and would like the
same to happen.
I've added the KX studio repo and Ardour, Carla, etc. work via JACK with
the onboard audio hardware. And the pulseaudio bridge works as well.
Where do I start to get USB audio working?
Hi list,
https://www.rncbc.org/drupal/user/register did not load, so I hope it's
okay to ask here.
Performance of my audio system somehow degraded so I tried to find the
culprit.
/etc/default/rtirq looks liks this:
# IRQ thread service names
# (space separated list, from higher to lower priority).
RTIRQ_NAME_LIST="snd usb i8042"
# Highest priority.
RTIRQ_PRIO_HIGH=90
# Priority decrease step.
RTIRQ_PRIO_DECR=5
# Lowest priority.
RTIRQ_PRIO_LOW=51
# Whether to reset all IRQ threads to SCHED_OTHER.
RTIRQ_RESET_ALL=0
# On kernel configurations that support it,
# which services should be NOT threaded
# (space separated list).
RTIRQ_NON_THREADED="rtc snd"
but even so,
$ /etc/init.d/rtirq status
PID CLS RTPRIO NI PRI %CPU STAT COMMAND
595 FF 50 - 90 0.0 S irq/34-mei_me
634 FF 50 - 90 0.0 S irq/36-iwlwifi
730 FF 50 - 90 0.0 S irq/39-rmi4_smb
1619 FF 50 - 90 2.9 S irq/35-nvidia
10 TS - 0 19 0.0 S ksoftirqd/0
18 TS - 0 19 0.0 S ksoftirqd/1
24 TS - 0 19 0.0 S ksoftirqd/2
30 TS - 0 19 0.0 S ksoftirqd/3
36 TS - 0 19 0.0 S ksoftirqd/4
42 TS - 0 19 0.0 S ksoftirqd/5
48 TS - 0 19 0.0 S ksoftirqd/6
54 TS - 0 19 0.0 S ksoftirqd/7
I was expecting to see snd and usb on this list or am I mistaken?
m.
They say that doing the same thing repeatedly, while expecting
a different result, is a sign of madness.
I've been trying to discover why my MOTU Ultralite AVB doesn't
work on Linux Mint 19.3 (5.3.0-40-generic) and see the following
in /var/log/syslog, which confirms, a total of 240 times, that:
"usb 1-14: clock source 1 is not valid"
I'm trying to dual boot. (Kernel 'thinks' my gaming wheel is a
mouse, so I had to make a udev rule for that.) and the MOTU is
usually synced to an external optical source at 48kHz. The boot
process appears to switch it to 192kHz briefly and then to 44.1k
which isn't going to be a good source because it's 48kHz.
Anyone using a MOTU with a modern Linux ubuntu flavour could help?
Relevant part of syslog below sig separator.
--
Thanks in advance.
/var/log/syslog:
Mar 5 20:40:40 mint01 kernel: [ 423.774917] usb 1-14: new high-speed USB device number 9 using xhci_hcd
Mar 5 20:40:40 mint01 kernel: [ 423.944393] usb 1-14: New USB device found, idVendor=07fd, idProduct=0005, bcdDevice= 2.00
Mar 5 20:40:40 mint01 kernel: [ 423.944398] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Mar 5 20:40:40 mint01 kernel: [ 423.944402] usb 1-14: Product: UltraLite AVB
Mar 5 20:40:40 mint01 kernel: [ 423.944405] usb 1-14: Manufacturer: MOTU
Mar 5 20:40:40 mint01 kernel: [ 423.944407] usb 1-14: SerialNumber: munged
Mar 5 20:40:40 mint01 mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
Mar 5 20:40:40 mint01 mtp-probe: bus: 1, device: 9 was not an MTP device
Mar 5 20:40:40 mint01 kernel: [ 423.970417] mc: Linux media interface: v0.10
Mar 5 20:40:40 mint01 kernel: [ 423.994249] usb 1-14: clock source 1 is not valid, cannot use
Mar 5 20:40:41 mint01 kernel: [ 424.832923] usb 1-14: clock source 1 is not valid, cannot use
Mar 5 20:40:41 mint01 kernel: [ 424.844172] usbcore: registered new interface driver snd-usb-audio
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.3
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.4
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.2
Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0
Mar 5 20:40:41 mint01 kernel: [ 424.881343] usb 1-14: clock source 1 is not valid, cannot use
(previous line repeated 40 times)
Mar 5 20:40:44 mint01 pulseaudio[1302]: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
Mar 5 20:40:44 mint01 pulseaudio[1302]: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="1" name="usb-MOTU_UltraLite_AVB_0001f2fffe005ded-00" card_name="alsa_card.usb-MOTU_UltraLite_AVB_0001f2fffe005ded-00" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1""): initialization failed.
(all repeated 6 times)
Mar 5 20:40:44 mint01 pulseaudio[1302]: [pulseaudio] module-udev-detect.c: Tried to configure /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/sound/card1 (alsa_card.usb-MOTU_UltraLite_AVB_0001f2fffe005ded-00) more often than 5 times in 10s
