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if i leave the dongle in (a front port) after this, within a few minutes my wired mouse and keyboard (in back ports) lose power. this time i pulled the dongle immediately and that has not happened yet
cannot run lsusb; it just hangs. actually pretty much anything that tries to look at usb devices just hangs. kernel also gripes regularly about a hung __usb_queue_reset_device task, so that checks out
unaware of anything that resolves this situation besides a power cycle
