Hello,
>>> Device is a Logitech wireless mouse/kbd dongle in standard mode (not bluetooth),
>>> usb are amd sb800 and nec xhci controllers.
>> Most likely the wireless receiver is malfunctioning. The "port
>> disabled by hub (EMI?)" message will not appear unless the upstream
>> port hardware disables its connection to the device; this is not under
>> the control of the OS.
> Tracked it to 0846e7e9856c0928223447d9349a877202a63f24
> (usb: Add support for indicating whether a port is removable)
>
> Indeed, just not exposing the attribute fixes it, so userspace is doing
> something (stupid?) to the device, although I have no idea what (yet).
For the record: a udev-rule unconditionally switches power/control to
'auto' on all
HID devices with the 'removable' property set to fixed, which makes
the 2 devices
go haywire (it's the last line in udevs 42-usb-hid-pm.rules).
Thanks,
Manuel Lauss
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