[LAU] Multiple ICE1712 cards setup with jack2

Hi, I have two M-Audio Delta1010LT cards on Ubuntustudio 10.04 with FalkTx's repos. I double checked, this is happening also on Kubuntu 11.10. Also it's not a matter of the kernel, currently using 2.6.33-29-realtime. I use Jack2, where can I find the exact version? Only thing I know, it's jackdmp 1.9.7. The cards are hardware synced via S-PDIF. In envy24control, a mixer program that knows about these features, hw:0 is set to internal clock and hw:1 is set to S-PDIF. I know of three options to get both cards working simultaneously, but none is working quite perfectly. a)use .asoundrc I have a .asoundrc from the web. After a few seconds, it crashes saying this: Unknown request 4294967295 Destination port in attempted (dis)connection of system:monitor_6 and system:monitor_6 is not an input port Unknown request 4294967295 Unknown request 0 Unknown request 0 Unknown request 0 Unknown request 4294967295 Unknown request 0 Unknown request 4294967295 Unknown request 4294967295 jackd: ../common/JackGraphManager.cpp:45: void Jack::JackGraphManager::AssertPort(jack_port_id_t): Assertion `port_index < fPortMax' failed. While running, it produces tons of xruns, each of them with -v option generates a message like Jack: fPollTable i = 1 fd = 11 Jack: JackRequest::Notification Jack: JackEngine::NotifyClient: no callback for event = 3 Jack: JackEngine::NotifyClient: no callback for event = 3 The last thing I get before crashing is: Jack: JackRequest::ConnectPorts Jack: fPollTable i = 1 fd = 11 Jack: fPollTable i = 1 fd = 11 Jack: fPollTable i = 1 fd = 11 Jack: fPollTable i = 1 fd = 11 Jack: JackRequest::ConnectPorts Jack: JackEngine::PortConnect src = -1 dst = 3 Jack: JackGraphManager::AssertPort port_index = 4294967295 But there is no delay of the second card. b) use jack_load this is working best atm, only it introduces a delay to the channels of the second card when recording with ardour. I measured the delay... it's exactly (periods/buffer)*(frames/period) frames. However, I'm not able to delay the first card with the -O or -I options. Probably the second is delayed as well, or this option is not working. In ardour I can move the regions to be in sync, but it gets quite confusing in bigger sessions. Btw does jack_load resample? c)use alsa_in produces the same delay but additionally uses a lot of cpu. Resampling is not what I want, and also shouldn't be necessary. Does anyone have an idea on how to fix this? I'd prefer a solution without resampling, as these cards are already synced. Also there should be no delay and it should keep running for hours. Thx! Any help is appreciated. /mn0