Re: [LAU] IRQ and RT question

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To: Aaron Krister Johnson <aaron@...>
Cc: Linux-audio-user <linux-audio-user@...>
Date: Thursday, December 6, 2012 - 10:19 pm

On Thu, December 6, 2012 8:49 am, Aaron Krister Johnson wrote:

> Anyway, it seems the EEE has suboptimal IRQ hardware settings for RT low

It is unusual that the internal Audio IF is sharing an irq, even my cheap
netbook has the internal audio IF on it's own irq and it is the highest
one at that (irq 48... some OS work better that way) I have found that
even though my wireless is not on the same IRQ, it still interferes with
my audio and gives xruns (pops) about once a minute... worse when
disabled, unless I unload the kernel module for it. You may wish to try
unloading other modules (like the built in camera for example is another I
have heard can interfere). It is also possible to disable some USB ports
to clear an IRQ if needed. I found that just using a different USB plug
helped too. The port on the right side of the netbook gives better results
than the one on the left.... The one on the left shares IRQs, the one on
the right does not.
I checked which USB port hey were by looking at the last 10 or so lines of
demsg while plugging a USB memstick in different ports. It shows which USB
port you have just used. Mine go from USB1 to USB5, USB3 is a good one for
me, but your's may be different.

Len Ovens

Linux-audio-user mailing list

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Messages in current thread:
[LAU] IRQ and RT question, Aaron Krister Johnson, (Thu Dec 6, 4:49 pm)
Re: [LAU] IRQ and RT question, Jeremy Jongepier, (Fri Dec 7, 9:53 am)
Re: [LAU] IRQ and RT question, Len Ovens, (Thu Dec 6, 10:19 pm)