[LAT] To much latency
Rafael Vega
email.rafa at gmail.com
Thu Nov 3 12:33:02 UTC 2011
Thanks for the input Daniel, I'll try this as soon as I reinstall my OS (messed up partitions :P)
On Nov 1, 2011, at 5:04 AM, Daniel James wrote:
> Hi Rafael,
>
>> My laptop is a MacBookPro8,1 with i7 processor, 8GB ram, built-in intel
>> HDA soundcard
>
> For Intel HDA a tweak is often required to get good performance. See:
>
> http://apps.linuxaudio.org/wiki/intel_hda_realtime_howto
>
> Ignore the kernel recompile part, but note the issue with mixer capture
> switches if using jackd in full duplex mode.
>
>> Codec: Cirrus Logic CS4206
>
> Try adding these options at the end of /etc/modprobe.d/alsa-base.conf
>
> options snd-hda-intel model=mbp55 position_fix=1 enable=1 index=0
>
> The mbp55 value for CS4206 is found near the end of:
>
> http://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt
>
> Then reboot and see if JACK performance improves. You should be able to
> get 64 frames/period x 3 periods/buffer @ 48KHz on this hardware.
>
> Cheers!
>
> Daniel
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