Arduino & Teensy connect but not through USB hub. - Raspberry Pi Forums

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i've got anker usb hub i'm using power rpi3 , hub. have both , arduino uno clone , teensy 3.1 i'd connect. both work fine when plugged rpi not of hub ports. have 8 port serial-usb , a-data thumb drive, both of work fine plugged anker hub.

why thumb drive or serial usb work in hub;s usb port, teensy doesn't work when plugged same place?

here's lsusb output comments added. note teensy plugged in didn't enumerate.

code: select all

bus 001 device 066: id 125f:db8a a-data technology co., ltd.					# thumb drive bus 001 device 059: id 2109:2812 via labs, inc. vl812 hub					# anker hub 1 of 2 bus 001 device 069: id 0403:6011 future technology devices international, ltd ft4232h quad hs usb-uart/fifo ic #usb-serial 1 of 3 bus 001 device 068: id 0403:6011 future technology devices international, ltd ft4232h quad hs usb-uart/fifo ic #usb-serial 2 of 3 bus 001 device 067: id 05e3:0610 genesys logic, inc. 4-port hub					# usb-serial 3 of 3 (root) bus 001 device 053: id 2109:2812 via labs, inc. vl812 hub					# anker hub 2 of 2 bus 001 device 070: id 1a86:7523 qinheng electronics hl-340 usb-serial adapter			# arduino uno clone bus 001 device 004: id 046d:c52b logitech, inc. unifying receiver				# keyboard/mouse bus 001 device 003: id 0424:ec00 standard microsystems corp. smsc9512/9514 fast ethernet adapter bus 001 device 002: id 0424:9514 standard microsystems corp. smc9514 hub  bus 001 device 001: id 1d6b:0002 linux foundation 2.0 root hub
here's lsusb -t

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 lsusb -t /:  bus 01.port 1: dev 1, class=root_hub, driver=dwc_otg/1p, 480m     |__ port 1: dev 2, if 0, class=hub, driver=hub/5p, 480m         |__ port 1: dev 3, if 0, class=vendor specific class, driver=smsc95xx, 480m	# ethernet         |__ port 3: dev 4, if 0, class=human interface device, driver=usbhid, 12m	# keyboard/mouse         |__ port 3: dev 4, if 1, class=human interface device, driver=usbhid, 12m	# keyboard/mouse         |__ port 3: dev 4, if 2, class=human interface device, driver=usbhid, 12m	# keyboard/mouse         |__ port 4: dev 70, if 0, class=vendor specific class, driver=, 12m		# arduino uno clone         |__ port 5: dev 53, if 0, class=hub, driver=hub/4p, 480m							# anker hub 1 of 2             |__ port 2: dev 67, if 0, class=hub, driver=hub/4p, 480m							# serial-usb (root)                 |__ port 1: dev 68, if 0, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 1: dev 68, if 1, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 1: dev 68, if 2, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 1: dev 68, if 3, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 2: dev 69, if 0, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 2: dev 69, if 1, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 2: dev 69, if 2, class=vendor specific class, driver=ftdi_sio, 480m                 |__ port 2: dev 69, if 3, class=vendor specific class, driver=ftdi_sio, 480m             |__ port 4: dev 59, if 0, class=hub, driver=hub/4p, 480m			# anker hub 2 of 2                 |__ port 1: dev 66, if 0, class=mass storage, driver=usb-storage, 480m	# thumb drive
here's dmesg when insert teensy anker hub:

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dmesg [  667.679219] usb 1-1.5.4.3: new full-speed usb device number 45 using dwc_otg [  667.789225] usb 1-1.5.4.3: device descriptor read/64, error -71 [  668.019232] usb 1-1.5.4.3: device descriptor read/64, error -71 [  668.249226] usb 1-1.5.4.3: new full-speed usb device number 46 using dwc_otg [  668.359266] usb 1-1.5.4.3: device descriptor read/64, error -71 [  668.589250] usb 1-1.5.4.3: device descriptor read/64, error -71 [  668.819225] usb 1-1.5.4.3: new full-speed usb device number 47 using dwc_otg [  669.259236] usb 1-1.5.4.3: device not accepting address 47, error -71 [  669.369269] usb 1-1.5.4.3: new full-speed usb device number 48 using dwc_otg [  669.809238] usb 1-1.5.4.3: device not accepting address 48, error -71 [  669.809444] usb 1-1.5.4-port3: unable enumerate usb device



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