Problems with IRQs when connecting two digium card in and asterisk box

Posted by JorgeO on Stack Overflow See other posts from Stack Overflow or by JorgeO
Published on 2009-03-10T04:15:52Z Indexed on 2010/03/18 8:11 UTC
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Filed under:

asterisk

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debian

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interrupt

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linux

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irq

I have two Digium Wildcard TDM800P with 8 FXO ports each. When I connect both at the same time IRQ misses start showing up making my computer unresponsive and unusable.

One card works fine but I need all 16 FXO ports to work to receive calls from my Telco. Is there a way for the cards to communicate with each other so they don't generate as many interrupts. Or a way to tweak Linux to dedicate separate IRQ's for each card.

I have tried disabling Audio, ACPI and USB ports. Still too many IRQ misses.

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