[LAU] ROLI Seaboard Rise. Help!

I saw an interesting keyboard mentioned in a u-he manual. Soon found that
a ROLI staff member, Filipe Tonello, has their Seaboard Rise 25 working
via BluTooth. See the video on his blog: https://blog.felipetonello.com/

The board has USB B connection as well as BT, so I'm using that.

I use Linux Mint 18 and I've been installing recent kernels to try to get
mine* working. Cinnamon crashes with 4.9 and 4.9.2 kernels, but the kernel
messages in /var/log/syslog showed nothing different with those than with
the supplied 4.4 kernel and a 4.8 one which works without crashing cinnamon:

Kernel 4.4.0-57-generic

Jan 13 14:49:49 Mint-18 kernel: [ 56.286006] usb 1-1.4: new full-speed USB device number 3 using ehci-pci
Jan 13 14:49:49 Mint-18 kernel: [ 56.378889] usb 1-1.4: New USB device found, idVendor=2af4, idProduct=0200
Jan 13 14:49:49 Mint-18 kernel: [ 56.378891] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jan 13 14:49:49 Mint-18 kernel: [ 56.378893] usb 1-1.4: Product: Seaboard RISE
Jan 13 14:49:49 Mint-18 kernel: [ 56.378894] usb 1-1.4: Manufacturer: ROLI Ltd.
Jan 13 14:49:49 Mint-18 mtp-probe: checking bus 1, device 3: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4"
Jan 13 14:49:49 Mint-18 mtp-probe: bus: 1, device: 3 was not an MTP device
Jan 13 14:49:49 Mint-18 kernel: [ 56.393102] usbcore: registered new interface driver snd-usb-audio
Jan 13 14:49:49 Mint-18 systemd-udevd[2177]: Process '/usr/sbin/alsactl -E HOME=/run/alsa restore 1' failed with exit code 99.
Jan 13 14:49:49 Mint-18 pulseaudio[1795]: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
Jan 13 14:49:49 Mint-18 pulseaudio[1795]: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="1" name="usb-ROLI_Ltd._Seaboard_RISE-00" card_name="alsa_card.usb-ROLI_Ltd._Seaboard_RISE-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.

So I tried updating ALSA with a 'daily build' snapshot from:
https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages

It won't install for any other than the usual 4.4 kernel and I see no change
in syslog, so I'm stumped. Is it worth trying with BlueTooth? I don't think so.

Will I need to contact Mr Tonello?

* Ordered yesterday, delivered today. Thanks to Amazon.

Also; I used to know how to search this list, but can't seem to find a
searchable archive any more.

-- 
John.
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