I am seeing the subject message ehci1: missed microframe, TT reset not implemented, hub might be inoperational
on occasion on my Lenovo S10 workstation. It seems to coincide with the mouse not working (usb mouse, connected through a Raritan KVM). I have had to reboot to get the mouse working -- restarting X doesn't do it -- so a real problem. I'm running the GENERIC 5.1 kernel at the moment, but I note that someone else complained about this on 'current-users' last August, running the then-current kernel on an HP ProLiant MicroServer N36L. Anyone have any thoughts about this? /Don