Ubuntu
linux-source-2.6.22 package

  1. Bug #88746 (ehci-hcd)
  2. Comment #230

Comment 230 for bug 88746

Revision history for this message
Francesco Potortì (pot) wrote : Re: [Bug 88746] Re: ehci_hcd module causes I/O errors in USB 2.0 devices

>At some point it worked (in Edgy) and using the same hardware with
>Gusty/Hardy introduced the problem. So the question is, was the
>autosuspend introduced in Gusty what broke it or was it something else?

No, it was before Gutsy. To me, it happened after some upgrade in Edgy.

>If it was the autosuspend, yes we have workaround but, how about getting
>USB 2.0 and autosuspend to work at the same time. If it was not the
>autosuspend, then we would like more debug done to see where's the
>conflict in the echi_hcd module and hopefully get it fixed.

My motherboard has most probably USB 1 ports. When I had the problem in
Edgy, I had to remove the ehci_hcd module to solve it. Now with Gutsy
ehci_hcd is not loaded any more, and everything works. Even If I load
ehci_hcd by hand everything keeps working.