linux-kernel - Re: libata, Sound on same IRQ : flaky sound

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Message-ID: <48B5F877.8030506@garzik.org>
Date:	Wed, 27 Aug 2008 20:59:35 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	"Robert M. Stockmann" <stock@...kkie.net>
CC:	linux-kernel@...r.kernel.org
Subject: Re: libata, Sound on same IRQ : flaky sound

Robert M. Stockmann wrote:
> Hi,
> 
> I have a couple of AMD64 machines with onboard sound devices running 
> and they all have one thing in common : flaky sound when one is 
> doing some heavy disk I/O on the SATA disks. Interesting enough 
> /proc/interrupts shows that libata is using the same IRQ as the sound 
> devices :
> 
> model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
> stepping        : 3
> cpu MHz         : 3014.679
> cache size      : 1024 KB
> 
> # cat /proc/interrupts 
>            CPU0       CPU1       
>   0:      55869  154467838    IO-APIC-edge  timer
>   8:          0          0    IO-APIC-edge  rtc
>   9:          0          0   IO-APIC-level  acpi
>  16:       1453     499686   IO-APIC-level  libata, NVidia CK8S
>  17:          0          0   IO-APIC-level  ehci_hcd:usb1
>  18:      27633   69978987   IO-APIC-level  eth0
> NMI:      10718      12112 
> LOC:  154533874  154533852 
> ERR:          0
> MIS:          0

What is the behavior of a recent kernel?

Is your SATA interface set to legacy mode in BIOS?

	Jeff


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