I forgot I changed priority to 1 (that was stupid but I didn't noticed) , I changed periods from 3 to 2 too, both trying to resolve this xrun problem hehehe. I returned priority to default and periods to 3 and tested, still xrun and tried with priority 80, same thing... I'm using my onboard soundcard hw:0,0 , do you guys have any idea? 

jackdrc:
/usr/bin/jackd -dalsa -r48000 -p128 -n3 -D -Chw:0 -Phw:0,0


2014-05-14 16:00 GMT-03:00 Federico Galland <federicogalland@gmail.com>:
Are you using your onboard soundcard (hw:0,0)?

If it's an intel hda card, you should also use 3 periods instead of 2. At least on all my hda-intel systems, using 3 periods lets me go below 128 f/p, while using 2 would throw a lot of xruns.

Also, as Jeremy pointed out, you should be rising your priority to at least 70 or more.

Good luck!



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Federico Galland <federicogalland@gmail.com>
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Lucas Conejero Takejame
Engenharia Elétrica - ênfase em computação
Escola Politécnica - USP