<!DOCTYPE html><html><head><title></title><style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>There was a very useful looking thread about this around March 30th of 2019 on this mailing list which I've kept bookmarked -- one reference in there is this thread on the linux musicians forum: <a href="https://linuxmusicians.com/viewtopic.php?f=6&t=18046">https://linuxmusicians.com/viewtopic.php?f=6&t=18046</a><br></div><div><br></div><div>Somewhere in there I think I remember someone finding a version of the MOTU firmware that they found to work reliably with linux, I haven't dug it up yet but maybe I will this weekend -- would be nice to reclaim this device!<br></div><div><br></div><div>I was surprised after a couple years of basically no issues with it then transferring it to be used on a mac in a shared environment for a while (where the firmware was upgraded continuously) to find when I reclaimed it that it no longer worked under linux... I have the clock sync issue that sounds like a bitcrushed LFO going from a clean sounding signal and then sputtering out into silence and back again over the course of a minute or two...<br></div><div><br></div><div>All to say I'm hopeful that rolling the firmware back is all that's needed but maybe someone with more recent direct experience can chime in!<br></div><div><br></div><div>On Fri, Mar 6, 2020, at 11:28 AM, John Murphy wrote:<br></div><blockquote type="cite" id="qt"><div>They say that doing the same thing repeatedly, while expecting<br></div><div>a different result, is a sign of madness.<br></div><div><br></div><div>I've been trying to discover why my MOTU Ultralite AVB doesn't<br></div><div>work on Linux Mint 19.3 (5.3.0-40-generic) and see the following<br></div><div>in /var/log/syslog, which confirms, a total of 240 times, that:<br></div><div><br></div><div>"usb 1-14: clock source 1 is not valid"<br></div><div><br></div><div>I'm trying to dual boot. (Kernel 'thinks' my gaming wheel is a<br></div><div>mouse, so I had to make a udev rule for that.) and the MOTU is<br></div><div>usually synced to an external optical source at 48kHz. The boot<br></div><div>process appears to switch it to 192kHz briefly and then to 44.1k<br></div><div>which isn't going to be a good source because it's 48kHz.<br></div><div><br></div><div>Anyone using a MOTU with a modern Linux ubuntu flavour could help?<br></div><div><br></div><div>Relevant part of syslog below sig separator.<br></div><div><br></div><div>-- <br></div><div>Thanks in advance.<br></div><div><br></div><div>/var/log/syslog:<br></div><div><br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.774917] usb 1-14: new high-speed USB device number 9 using xhci_hcd<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.944393] usb 1-14: New USB device found, idVendor=07fd, idProduct=0005, bcdDevice= 2.00<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.944398] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=3<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.944402] usb 1-14: Product: UltraLite AVB<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.944405] usb 1-14: Manufacturer: MOTU<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.944407] usb 1-14: SerialNumber: munged<br></div><div>Mar 5 20:40:40 mint01 mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"<br></div><div>Mar 5 20:40:40 mint01 mtp-probe: bus: 1, device: 9 was not an MTP device<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.970417] mc: Linux media interface: v0.10<br></div><div>Mar 5 20:40:40 mint01 kernel: [ 423.994249] usb 1-14: clock source 1 is not valid, cannot use<br></div><div>Mar 5 20:40:41 mint01 kernel: [ 424.832923] usb 1-14: clock source 1 is not valid, cannot use<br></div><div>Mar 5 20:40:41 mint01 kernel: [ 424.844172] usbcore: registered new interface driver snd-usb-audio<br></div><div>Mar 5 20:40:41 mint01 upowerd[1340]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14<br></div><div>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<br></div><div>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<br></div><div>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<br></div><div>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<br></div><div>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<br></div><div>Mar 5 20:40:41 mint01 kernel: [ 424.881343] usb 1-14: clock source 1 is not valid, cannot use<br></div><div> (previous line repeated 40 times)<br></div><div>Mar 5 20:40:44 mint01 pulseaudio[1302]: [pulseaudio] module-alsa-card.c: Failed to find a working profile.<br></div><div>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.<br></div><div> (all repeated 6 times)<br></div><div>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<br></div><div>_______________________________________________<br></div><div>Linux-audio-user mailing list<br></div><div>Linux-audio-user@lists.linuxaudio.org<br></div><div>https://lists.linuxaudio.org/listinfo/linux-audio-user<br></div><div><br></div></blockquote><div><br></div></body></html>