Re: [Jack-Devel] high-latency netjack

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Date	Wed, 29 Jan 2014 07:15:23 -0800
From	Grant <[hidden] at gmail dot com>
To	Paul Davis <[hidden] at linuxaudiosystems dot com>
Cc	JACK <[hidden] at lists dot jackaudio dot org>
In-Reply-To	Paul Davis Re: [Jack-Devel] high-latency netjack

>> > I'm having some kind of USB buffer issues on my Pandaboard ARM device
>> > which are causing audible gaps in playback over netjack.  The
>> > Pandaboard's ethernet port operates over USB.  I don't need
>> > low-latency, I just need to stream audio via netjack without audible
>> > gaps.  What should I try?
>> >
>> > This is the error I'm seeing in dmesg:
>> >
>> > ehci-omap.0: detected DataBufferErr
>> >
>> > I think this could be fixed by upgrading kernels but I have to stay on
>> > 3.4 for the binary video drivers that are available.
>> >
>> > - Grant
>>
>> This is weird.  The problem disappears when the system is working on
>> something.  A kernel compile for example.  No dropouts at all until
>> the compile is over.  Any ideas?
>
>
> cpu frequency control stands out as a very obvious possibility.

That makes a lot of sense but where could it hide if I have the following?

CONFIG_CPU_FREQ=n
CONFIG_CPU_IDLE=n

- Grant

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