Re: [Bugme-new] [Bug 14228] New: EHCI dont recognize USB card reader Alcor 058f:6366

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On Thu, 15 Oct 2009, Alexey wrote:

> I tried to `sg_start -l /dev/sdb` after I inserted the card into the
> card reader but it doesn't work.
> The trace of the usbmon contains only records that repeats all time.

Can you post the usbmon trace?  It should have at least one other
command, from the sg_start program.

> I also tried `sg_start -s -l /dev/sdb` and a lot of other options of
> sg_start but with no effect.
> 
> > If it doesn't work then there's a good possibility your card reader is 
> > simply broken.
> >   
> But it works with `rmmod ehci_hcd` (if ehci-hcd loaded) or with
> `modprobe ehci-hcd` (if it wasn't loaded).
> And with the same commands for uhci-hcd.

However it _should_ work without unloading and reloading those modules.  
The fact that it doesn't indicates something is wrong with it.

> And the card reader normal works in the Windows OS.

So we should find out what commands Windows sends to the reader.  You
can do this using the SnoopyPro program.

Alan Stern

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