Re: xhci_hcd and Canon Lide 110 not playing well together

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On Sun, 22 Dec 2013, Matthias [ISO-8859-1] Bl�ng wrote:

> To give some reference: This is Kernel 3.13.0-rc4 with both patches
> applied.
> 
> I now see also a device, that at least works partly now (I can scan with
> scanimage and simple-scan, but xsane fails). I think xsane does some
> more complex interaction with the device (this is a hunch!) and in
> consequence fails. Before I hit the fatal problem, I see xsane reacting
> sluggish - the gui is blocked for interaction. I didn't see the same
> with the EHCI bus.

Perhaps it would help to compare usbmon traces for an xHCI port and an 
EHCI port.  In theory, they should be very similar.  Any differences 
could point to a problem.

Alan Stern

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