On Tue, 25 Jul 2017, Zdenek Kabelac wrote: > And in fact it's the very same commit - which adds this message > (just check current 4.13 with and without this commit reverted) > > So here goes usbmon trace (aka 'cat /sys/kernel/debug/usb/usbmon/0u') > no other usb device has been touch so should not hopefully interfere here. > > Trace is from 4.12 kernel - so it has reported "not running at top speed"
Can you collect an equivalent trace under 4.8? Alan Stern