Thanks for the quick reply! I'll try to answer these questions... > I assume you are using freebob and not ffado. Yes. > Some things to check: > * are you running jackd with the realtime flag? Yes, 'realtime' is ticked in the qjackctl settings. > * do you alleviate the priority of the ohci1394 interrupt above other interrupt sources? (e.g. with the rtirq) No. I tried messing with IRQ priorities a couple of days back, but I didn't really know what I was doing and the only thing that happened was the menu bars on my desktop would disappear randomly when I started jack, I've reinstalled Ubuntu since then. Do you think it would help if I installed rtirq? > * does dmesg show anything special regarding 1394? $ dmesg|grep 1394 [ 12.564436] ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[19] MMIO=[fe4ff000-fe4ff7ff] Max Packet=[2048] IR/IT contexts=[8/8] [ 13.822759] ieee1394: Host added: ID:BUS[0-00:1023] GUID[384fc00039a11470] [ 13.829370] ieee1394: Node added: ID:BUS[0-01:1023] GUID[000d6c0b00e0fb02] [ 20.828189] ieee1394: raw1394: /dev/raw1394 device initialized [ 20.835615] NOTE: The dv1394 driver is unsupported and may be removed in a future Linux release. Use raw1394 instead. $ > * what firewire chipset do you use? (lspci | grep 1394) $ lspci|grep 1394 03:01.4 FireWire (IEEE 1394): O2 Micro, Inc. Firewire (IEEE 1394) (rev 02) $ > * are you using -n3 (to specify the usage of 3 buffers of one period)? Normally I just start jackd with qjackctl. Just now I tried starting it in the terminal with: $ jackd -R -d freebob -n3 and it didn't make any difference to the sound. I don't know if any of that is interesting... Cheers, Katie. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
