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

From: Dan S <danstowell+lxau@email-addr-hidden>
Date: Wed Jul 22 2009 - 14:27:18 EEST

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
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user@email-addr-hidden
>> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
>>
>>
>
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user@email-addr-hidden
> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
>

-- 
http://www.mcld.co.uk
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Received on Wed Jul 22 16:15:03 2009

This archive was generated by hypermail 2.1.8 : Wed Jul 22 2009 - 16:15:04 EEST