Re: USB flakes out?

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On 11/19/19 10:05 PM, Tom Horsley wrote:
> On Tue, 19 Nov 2019 21:56:05 +0800
> Ed Greshko wrote:
>
>> I wonder why yours shows as low-speed USB device.  Just curious.
> Because it is plugged into a usb2 port to leave usb3 port free
> for stuff that needs them. These are both wired mice, not wireless.

Hummm....

These machines are rather old.  When I run "lsusb -v" and grep on bcdUSB they all
show  2.00.  So, I don't think I have any USB3 ports.  Still I see full-speed USB
reported.

I'm pretty sure bcdUSB indicates the version since an even older laptop has 2.00 and
1.10.

> I was wondering if maybe older kernels used to reconnect
> silently so no one noticed the port problem. That would explain
> why I never saw it before (because it is hard to miss when
> my button reprogramming disappears and drag lock stops working :-).
>

Not that I know of.  Other than the one time a kernel update caused some mice not to
be recognized I've never had a problem.

-- 
The key to getting good answers is to ask good questions.
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