gistfile1.txt

-- now nothing

# lsusb
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

[   11.455909] xhci_hcd 0000:04:00.0: irq 48 for MSI/MSI-X
[   11.459230] usb usb3: No SuperSpeed endpoint companion for config 1  interface 0 altsetting 0 ep 129: using minimum values
[   11.459293] xHCI xhci_add_endpoint called for root hub
[   11.459295] xHCI xhci_check_bandwidth called for root hub
[   11.459315] hub 3-0:1.0: USB hub found
[   11.459317] hub 3-0:1.0: 4 ports detected
[   29.763207] usb 1-1.3: new full speed USB device using ehci_hcd and address 7
[   29.842973] usb 1-1.3: device descriptor read/64, error -32
[   30.032434] usb 1-1.3: device descriptor read/64, error -32
[   30.221889] usb 1-1.3: new full speed USB device using ehci_hcd and address 8
[   30.301660] usb 1-1.3: device descriptor read/64, error -32
[   30.491116] usb 1-1.3: device descriptor read/64, error -32
[   30.680576] usb 1-1.3: new full speed USB device using ehci_hcd and address 9
[   31.099294] usb 1-1.3: device not accepting address 9, error -32
[   31.179146] usb 1-1.3: new full speed USB device using ehci_hcd and address 10
[   31.597865] usb 1-1.3: device not accepting address 10, error -32
[   31.597951] hub 1-1:1.0: unable to enumerate USB device on port 3


-- before was showing


$ scanimage -L
device `genesys:libusb:001:018' is a Canon LiDE 110 flatbed scanner