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Old 08-01-2007, 06:27 AM   #1
wet
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Registered: Jul 2007
Distribution: Slackware 12, Fedora 8, Gentoo. (NO MORE MANDRIVA, GO AWAY EVIL THING)
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IRQ conflict/disabling question


Hey,

I recently installed the drivers for my wlan card but after some 5 minutes I got some weird message informing me about IRQ 11 being disabled (HUH?!) (the one my card is using.. and my soundcard too. But that one I didn't manage to get configured yet (ALSA can't find it even though I seem to have the correct drivers installed - but nevermind about this one))

What's up with that disabling? Do I need to make my card use a different IRQ? And what are those, in not-so-techie-speak?

Thanks,
- wet
 
Old 08-01-2007, 11:55 PM   #2
blackhole54
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Registered: Mar 2006
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Quote:
Originally Posted by wet
And what are those, in not-so-techie-speak?
Since nobody else has responded, I thought I would try to clue you in a little about IRQs. I'm afraid I cant help you with your problem though.

IRQ stands for interrupt. This is a method for handling data flow to or from a hardware device. (An alternative is DMA -- direct memory access -- where a device can write or read data directly to/from memory.) With interrupts, when a device has data ready, or is ready to accept more data, it asserts a hardware line called an interrupt -- so named because that is what it does. Within some constraints, it causes the processor to interrupt what it is doing and service the hardware. This way the software does not have to keep polling the hardware: are you ready yet? are you ready yet? are you ready yet?

In your case, the number 11 simply represents one of a number of interrupt lines that can interrupt the processor.

Last edited by blackhole54; 08-01-2007 at 11:56 PM.
 
  


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