[LAU] eeepc 4G and ALSA underrun

ben brouits at free.fr
Wed Jul 22 04:41:49 EDT 2009

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
>> better.
> 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,
> Clemens
Thank you for the explanation on IRQs.

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