On Sat, Nov 23, 2019 at 04:44:55PM +0100, Andrea Vai wrote: > Il giorno sab, 23/11/2019 alle 15.28 +0800, Ming Lei ha scritto: > > > > Please post the log of 'lsusb -v', and I will try to make a patch > > for > > addressing the issue. > > attached, Please apply the attached patch, and re-build & install & reboot kernel. This time, please don't switch io scheduler. Thanks, Ming