The output from dmesg is:

>input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:9.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 9 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 9 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 9 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 9 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 9
hub.c: new USB device 00:1f.2-1.1, assigned address 10
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:10.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 904
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:10.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 10 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 10 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 10 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 10 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 10
hub.c: new USB device 00:1f.2-1.1, assigned address 11
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:11.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 396
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:11.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 11 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 11 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 11 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 11 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 11
hub.c: new USB device 00:1f.2-1.1, assigned address 12
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:12.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1865
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:12.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 12 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 12 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 12 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 12 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 12
hub.c: new USB device 00:1f.2-1.1, assigned address 13
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:13.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1367
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:13.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 13 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 13 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 13 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 13
hub.c: new USB device 00:1f.2-1.1, assigned address 14
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:14.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 899
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:14.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 14 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 14 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 14
hub.c: new USB device 00:1f.2-1.1, assigned address 15
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:15.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 351
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:15.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 15 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 15 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 15 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 15 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 15
hub.c: new USB device 00:1f.2-1.1, assigned address 16
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:16.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 18
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:16.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 16 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 16 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 16
hub.c: new USB device 00:1f.2-1.1, assigned address 17
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:17.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1385
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:17.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 17 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 17 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 17 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 17 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 17
hub.c: new USB device 00:1f.2-1.1, assigned address 18
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:18.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 894
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:18.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 18 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 18 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 18 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 18
usbdevfs: USBDEVFS_CONTROL failed dev 18 rqt 128 rq 6 len 18 ret -84
hub.c: new USB device 00:1f.2-1.1, assigned address 19
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:19.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 366
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:19.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 19 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 19 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 19 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 19 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 19
hub.c: new USB device 00:1f.2-1.1, assigned address 20
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:20.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1806
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:20.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 20 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 20 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 20 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 20 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 20
hub.c: new USB device 00:1f.2-1.1, assigned address 21
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:21.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1137
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:21.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 21 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 21 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 21 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 21 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 21
hub.c: new USB device 00:1f.2-1.1, assigned address 22
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:22.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 559
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:22.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 22 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 22 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 22 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 22 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 22
hub.c: new USB device 00:1f.2-1.1, assigned address 23
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:23.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1929
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:23.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 23 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 23 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 23 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 23 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 23
hub.c: new USB device 00:1f.2-1.1, assigned address 24
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:24.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 1341
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:24.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 24 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 24 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 24 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 24 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 24
hub.c: new USB device 00:1f.2-1.1, assigned address 25
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:25.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 582
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:25.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 25 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 25 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 25 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 25 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 25
hub.c: new USB device 00:1f.2-1.1, assigned address 26
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:26.0
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 2032
input,hiddev0: USB HID v1.00 Device [Chicony USB HUB keyboard] on usb1:26.1
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: usb_hub_port_status (2) failed (err = -84)
hub.c: get_hub_status failed
usbdevfs: USBDEVFS_CONTROL failed dev 26 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 26 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 26 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 26 rqt 128 rq 6 len 18 ret -84
usb.c: USB disconnect on device 00:1f.2-1.1 address 26
hub.c: new USB device 00:1f.2-1.1, assigned address 27
input: USB HID v1.00 Keyboard [Chicony USB HUB keyboard] on usb1:27.0