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.