13 May
2012
13 May
'12
7:45 p.m.
From: Robin Gareus <robin(a)gareus.org>
Date: Sun, 13 May 2012 08:57:26 +0200
On 05/13/2012 03:13 AM, plutek wrote:
after i do:
# cd /sys/bus/pci/drivers/ehci_hcd/
# echo -n 0000:00:1d.0 > unbind
...the USB audio device no longer shows up in qjackctl.
did i misunderstand?
thanks... cheers!
.pltk.
From: Karsten Wiese
<fzuuzf(a)googlemail.com>
Date: Sat, 12 May 2012 23:18:22 +0200
yes,
http://lists.linuxaudio.org/pipermail/linux-audio-dev/2010-October/029511.h… 2012/5/12 Clemens Ladisch
<clemens(a)ladisch.de>de>:
hmmmm.... shame.... lenovo specs said, of course, "USB 2.0".
mrph.
any way around this currently? 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.