[LAU] Cracking sound via USB (ALSA urb.c:480: frame 5 active: -18)

Aurélien Leblond blablack at gmail.com
Tue May 24 23:36:10 UTC 2011


>>* The USB Controller is the dreaded EHCI USB Controller: Intel*>>* Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller*>>* (rev 05)*>>* But the soundcard I'm usins is USB2, not USB 1.*>Hello Aurélien,
>Afaik this doesn't matter, both USB2 and USB1 cards have issues when >used with full duplex on this USB controller or this Rate Matching hub >thing. But maybe this needs some digging in old mails/forum threads, I

>could be wrong on this.


Damn, as far as my research went, I only thought the problem was only
when mixing USB1 and USB2 devices on these ports...

I actually did some research... I knew these ports had issue with USB1
but couldn't find anything about USB2...
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