I'm also having weird problems with "1a40:0101 Terminus Technology Inc. 4-Port HUB" when daisy chained through "2109:0812 VIA Labs Inc. USB 3.0 - 4 port hub" but I'm still in the fact gathering stage with lsbusb, usb-devices, udevadm info, udevadm monitor, udevadm export-db, lspci, gedit /var/log/kern.log commands and .rules files. It's been a fascinating 2 weeks of hobby hours consumption.
I'm also having weird problems with "1a40:0101 Terminus Technology Inc. 4-Port HUB" when daisy chained through "2109:0812 VIA Labs Inc. USB 3.0 - 4 port hub" but I'm still in the fact gathering stage with lsbusb, usb-devices, udevadm info, udevadm monitor, udevadm export-db, lspci, gedit /var/log/kern.log commands and .rules files. It's been a fascinating 2 weeks of hobby hours consumption.