I have had 2 laptop USB ports die slowly (all ports slowly got
flakier, until the caused slowness issues from seemingly random
interrupts). I suspected it to be heat and poor cooling design
around the usb chips. So far 2 previous models slowly (not from the
same labeled provider) became less and less stable with disconnects
more and more often.
On Mon, Nov 18, 2019 at 2:47 PM Tom Horsley <horsley1953(a)gmail.com> wrote:
>
> I'm now running fedora 31 on my system at home and at
> work. On both systems I occasionally notice all my
> xinput settings have reverted to default, as if I
> unplugged my mouse and plugged it back in (even though
> I didn't unplug it).
>
> Has anyone else noticed USB weirdness like this? Looking
> at dmesg, that seems to be what the kernel thinks
> happened:
>
> [ 36.142138] 8021q: 802.1Q VLAN Support v1.8
> [ 36.188272] IPv6: ADDRCONF(NETDEV_CHANGE): wlp0s29u1u2: link becomes ready
> [28350.784597] usb 2-1-port5: disabled by hub (EMI?), re-enabling...
> [28350.784606] usb 2-1.5: USB disconnect, device number 4
> [28350.979282] usb 2-1.5: new low-speed USB device number 6 using ehci-pci
> [28351.063350] usb 2-1.5: New USB device found, idVendor=047d, idProduct=1020,
bcdDevice= 1.00
> [28351.063355] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> [28351.063358] usb 2-1.5: Product: Kensington Expert Mouse
> [28351.063360] usb 2-1.5: Manufacturer: Kensington
> [28351.066182] input: Kensington Kensington Expert Mouse as
/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/0003:047D:1020.0005/input/input21
> [28351.066409] hid-generic 0003:047D:1020.0005: input,hidraw1: USB HID v1.10 Mouse
[Kensington Kensington Expert Mouse] on usb-0000:00:1d.0-1.5/input0
>
> Looks like a little less than 8 hours after the booted,
> the kernel decided I just disconnected and reconnected
> the mouse.
>
> I have no idea what an EMI is, but that's what starts everything.
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