On Fri, 25 Feb 2005, shiju mathew wrote:
> Hi,
> I have problem connecting a usb audio headset to a usb 2.0 hub which inturn
> is connected to the root hub on the system . There are lots of noice while
> playing an audio in the above configuration. But I do not have any problem
> if the usb hub on which the usb audio set is plugged in is an 1.1 compliant
> usb hub. It plays sound with no noice at all. Could someone suggest me how
> to emulate an usb 2.0 hub to an usb 1.1 hub so that I could resolve the
> problem. It is not prossible to replace the hub since it is part of a
> product design.
> I use fedora core 3 and have tested with the lastest kernel 2.6.11-rc5. The
> problem still exsit.
> Thanks in advance.
There's no way to do exactly what you asked. But if you type (as root)
rmmod ehci-hcd
it should have pretty much the same effect. The disadvantage is that then
Linux won't be able to use your computer's USB-2.0 controller, so all your
USB devices will have to run at USB-1.1 speeds.
Alan Stern
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