Re: [LAU] Multiple ICE1712 cards setup with jack2

Hi, I've been using 2 Delta 1010s together for a while, I hope I can help a bit here. I've tried to put most of what I've learned on the web at http://delta.brainiac.com/deltasync.html On Tue, 31 Jan 2012 05:40:35 +0100 mn0 &lt;mn0(a)fukked-up.de&gt; wrote: That should be fine, it's what I use as well. So far, so good. I'll assume you're using a real S-PDIF cable and not just an audio RCA cable. [ snip ] Using the .asoundrc file to combine the cards into one logical device is what I consider to be the "correct" way of doing this, so I'll focus on that. Assumptions I'm making here: - the Deltas are the only 2 sound devices in the system. This can be verified by the command "cat /proc/asound/cards". On my system, this is the output I see: [jh@xtc ~]$ cat /proc/asound/cards 0 [M1010 ]: ICE1712 - M Audio Delta 1010 M Audio Delta 1010 at 0xdf80, irq 21 1 [M1010_1 ]: ICE1712 - M Audio Delta 1010 M Audio Delta 1010 at 0xdf40, irq 20 If you have a motherboard that has an integrated sound chip, you might find your zero device is not a Delta, which is a problem. I had to disable my onboard sound card in my motherboard's BIOS settings. - You have hw:0 and hw:1 identified correctly. Unfortunately, sometimes Linux has an issue with being able to consistently identify 2 identical soundcards. I've had this happen in the past and it gets annoying. I found it most liable to happen if I've made some other hardware change to the machine, otherwise it's usually stable across reboots. It's easily tested by using hw:0 to start jack and verifying that it addresses the ports on the card you believe to be hw:0. - You've got the right cards set as master clock and S/PDIF slave and that the correct ports on each are connected. I've gotten this incorrect on at least 2 occasions, so it's worth re-checking! - The 2 1010LT's are not sharing any IRQs with other devices. "lsmod -v" command will show you the IRQs of all the PCI devices. The Deltas should have IRQs all to themselves. Here's my output edited to show just the Deltas. IRQs 20 and 21 are not shared with any other device. 02:09.0 Multimedia audio controller: VIA Technologies Inc. ICE1712 [Envy24] PCI Multi-Channel I/O Controller (rev 02) Subsystem: VIA Technologies Inc. M-Audio Delta 1010 Flags: bus master, medium devsel, latency 64, IRQ 21 I/O ports at df80 [size=32] I/O ports at dfa0 [size=16] I/O ports at df60 [size=16] I/O ports at df00 [size=64] Capabilities: <access denied> Kernel driver in use: ICE1712 Kernel modules: snd-ice1712 02:0c.0 Multimedia audio controller: VIA Technologies Inc. ICE1712 [Envy24] PCI Multi-Channel I/O Controller (rev 02) Subsystem: VIA Technologies Inc. M-Audio Delta 1010 Flags: bus master, medium devsel, latency 64, IRQ 20 I/O ports at df40 [size=32] I/O ports at ded0 [size=16] I/O ports at dec0 [size=16] I/O ports at de80 [size=64] Capabilities: <access denied> Kernel driver in use: ICE1712 Kernel modules: snd-ice1712 If the hardware's setup is verified as OK, look at how you're starting Jack. You didn't post the command used to start jack, so I can't say if it's starting the way you expect. If you use QJackCtl to start jack, the command that starts jack can be found by looking at the .jackdrc file. Hope this helps, or at least gives you a starting point for troubleshooting. -- ====================================================================== Joe Hartley - UNIX/network Consultant - jh(a)brainiac.com Without deviation from the norm, "progress" is not possible. - FZappa