[LAU] eeepc 4G and ALSA underrun -> and jack and rt
brouits at free.fr
Thu Jul 23 17:44:32 EDT 2009
sh0099 a écrit :
> i have to say that i also have not so nice performance with jack on my
> eeepc 4g with a ubuntu-eee. does anybody knows if there is a rt kernel
> which works well with the eeepc 4g?
> i currently run ubuntu-eee 8.04.
I use currently ubuntu 9.à4 and the pr-packaged rt-kernel works, even
with networking. But xruns are still there even with RT prio 100 for jackd.
> ben schrieb:
>> Clemens Ladisch a écrit :
>>> ben wrote:
>>>> i own an eeepc 4G (701) but ALSA makes a lot for underrun withe de Intel
>>>> soundcard (snd_hda_intel). Surprisingly, using the OSS emulation works
>>> The OSS emulation uses the same ALSA API internally; you should get the
>>> same behaviour if you configure your application, whatever it is, to use
>>> the same buffer/period sizes for ALSA as it uses for OSS.
>> OK. I saw some applications behave better than some other.
>> I'll RTFM on buffer/period sizes when the application alow to tweak it,
>> even if this can increase latency.
>>>> Is it possible to tell to snd_hda_intel to force the use of the
>>>> soundcard in a better IRQ ?
>>> No, I/O-APIC interrupts (above 15) are hardwired.
>>> Best regards,
>> Thank you for the explanation on IRQs.
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>> Linux-audio-user at lists.linuxaudio.org
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