Re: [LAU] eeepc 4G and ALSA underrun -> and jack and rt

this means that i have to compile the kernel myself?
when this is the case what should i read to be able to do this?
thanks
olaf

Dan S schrieb:
> I had good results by RT-patching the array kernel
> http://array.org/ubuntu/ , apart from the wifi sometimes causes xruns,
> which is OK for me cos I don't do network performances...
>
> Dan
>
>
> 2009/7/22 sh0099 <sh0099@email-addr-hidden>:
>
>> 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.
>>
>> 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
>>>>> 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.
>>> Benoît
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>>>
>>>
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>
>
>
>

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Received on Wed Jul 22 16:15:04 2009