Re: USB flakes out?

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On 20191119 15:04:58, Tom Horsley wrote:
On Tue, 19 Nov 2019 18:42:31 -0400
George N. White III wrote:

EFI is looking like a red herring.   Next on the list of
suspects with access to both systems is power
management.   Have a look at USB Power Management for Linux 5.3
<https://www.kernel.org/doc/html/v5.3/driver-api/usb/power-management.html>
(hasn't changed over many kernel versions).   A good first step would
be to disable USB PM and see if the issue goes away.

Thanks! That sounds like useful info. The kernel already had the
mouse set to not ever suspend, but backing up to the hub, I see it
set to "auto", so I disabled the hub PM and I'll see if I notice
the mouse go away again.

Another thing that comes to mind, that I have seen, is a flaky USB cable. Flexing it would cause a USB reset for the device. And mice seem to get a lot of flexing due a lot of movement.
{o.o}
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