Re: [LAU] USB on ThinkPad T520

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To: <fzuuzf@...>

Cc: <linux-audio-user@...>, <clemens@...>

Date: Sunday, May 13, 2012 - 1:13 am

From: Karsten Wiese

Date: Sat, 12 May 2012 23:18:22 +0200
> 2012/5/12 Clemens Ladisch :

quoted text>> 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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Messages in current thread:

[LAU] USB on ThinkPad T520, plutek, (Sat May 12, 2:52 pm)

Re: [LAU] USB on ThinkPad T520, Clemens Ladisch, (Sat May 12, 6:31 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Sun May 13, 1:12 am)

Re: [LAU] USB on ThinkPad T520, Clemens Ladisch, (Sun May 13, 9:07 am)

Re: [LAU] USB on ThinkPad T520, Karsten Wiese, (Sat May 12, 9:18 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Sun May 13, 1:13 am)

Re: [LAU] USB on ThinkPad T520, Robin Gareus, (Sun May 13, 6:57 am)

Re: [LAU] USB on ThinkPad T520, plutek, (Sun May 13, 5:45 pm)

Re: [LAU] USB on ThinkPad T520, Robin Gareus, (Sun May 13, 6:15 pm)

Re: [LAU] USB on ThinkPad T520, Monty Montgomery, (Sun May 13, 7:28 pm)

Re: [LAU] USB on ThinkPad T520, Robin Gareus, (Sun May 13, 8:06 pm)

Re: [LAU] USB on ThinkPad T520, Monty Montgomery, (Sun May 13, 8:40 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Mon May 14, 4:31 pm)

Re: [LAU] USB on ThinkPad T520, david, (Mon May 14, 6:23 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Mon May 14, 7:20 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Mon May 14, 7:22 pm)

Re: [LAU] USB on ThinkPad T520, david, (Wed May 16, 8:25 am)

Re: [LAU] USB on ThinkPad T520, hermann, (Wed May 16, 8:33 am)

Re: [LAU] USB on ThinkPad T520, david, (Thu May 17, 5:45 pm)

Re: [LAU] USB on ThinkPad T520, Tim Westbrook, (Fri May 18, 6:57 am)

Re: [LAU] USB on ThinkPad T520, Clemens Ladisch, (Sun May 13, 8:29 pm)

Re: [LAU] USB on ThinkPad T520, plutek, (Sun May 13, 6:32 pm)

Re: [LAU] USB on ThinkPad T520, Monty Montgomery, (Sun May 13, 2:56 am)