From: Karsten Wiese <fzuuzf@xxxxxxxxxxxxxx>
Date: Sat, 12 May 2012 23:18:22 +0200
> 2012/5/12 Clemens Ladisch <clemens@xxxxxxxxxx>:
>> plutek wrote:
>>> i've been running AVLinux5.0.3 on a ThinkPad T61p for a while now....
>>> with an ART USB Dual Tube Pre, i can run Jack at 64 frames, 2 periods
>>>
>>> now i've got a new ThinkPad T520, and if i start jack on USB at 64*2
>>> i get hundreds of xruns in seconds.
>>
>> Both machines run (I assume) the same software? Then the problem is
>> with the hardware, or its drivers.
>>
>> Please show the output of lspci and the contents of /proc/interrupts.
>>
>
> Thinkwiki says its got a QM67. That does USB 1.1 via the "Rate
> matching hub" and EHCI.
> I guess linux's hub driver is the culprit.
hmmmm.... shame.... lenovo specs said, of course, "USB 2.0".
mrph.
any way around this currently?
cheers!
.pltk.
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