Has Linux kernel gone mad?

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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
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