Re: [Bug 208307] New: Alcor Micro Corp. Multi Flash Reader [058f:6366] keeps being detected and removed continuously

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On Wed, Jun 24, 2020 at 05:05:49AM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208307
> 
>             Bug ID: 208307
>            Summary: Alcor Micro Corp. Multi Flash Reader [058f:6366] keeps
>                     being detected and removed continuously
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 5.8-rc2

> We have a laptop equipped with AMD Ryzen 5 4500U with Radeon Graphics.  The
> Alcor Micro Corp. Multi Flash Reader keeps being detected and removed
> continuously.  Then, once the storage modules try to access it, there will be
> the failure.  These messages keep showing up like floods in the kernel message
> log.

Try disabling Link Power Management for this device:

   echo 058f:6366:k >/sys/module/usbcore/parameters/quirks

Alan Stern



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