Another thing... after connecting the device... two minutes later... it spontaneously disconnected... this is the "dmesg"
(here i plugged the modem...)
[ 5426.680063] usb 2-2: new full speed USB device using ohci_hcd and address 6
[ 5426.887282] usb 2-2: not running at top speed; connect to a high speed hub
[ 5426.907960] usb 2-2: configuration #1 chosen from 1 choice
[ 5426.923785] usb-storage: device ignored (until here is fine, but then...)
[ 6150.538432] usb 2-2: USB disconnect, address 6
[ 6156.260393] usb 1-2: new high speed USB device using ehci_hcd and address 32
(and won't connect again...)
[ 6156.372080] usb 1-2: device descriptor read/64, error -71
[ 6156.588105] usb 1-2: device descriptor read/64, error -71
[ 6156.804074] usb 1-2: new high speed USB device using ehci_hcd and address 33
[ 6156.921067] usb 1-2: device descriptor read/64, error -71
[ 6157.137106] hub 1-0:1.0: unable to enumerate USB device on port 2
Another thing... after connecting the device... two minutes later... it spontaneously disconnected... this is the "dmesg"
(here i plugged the modem...)
[ 5426.680063] usb 2-2: new full speed USB device using ohci_hcd and address 6
(until here is fine, but then...)
[ 5426.887282] usb 2-2: not running at top speed; connect to a high speed hub
[ 5426.907960] usb 2-2: configuration #1 chosen from 1 choice
[ 5426.923785] usb-storage: device ignored
[ 6150.538432] usb 2-2: USB disconnect, address 6
[ 6156.260393] usb 1-2: new high speed USB device using ehci_hcd and address 32
(and won't connect again...)
[ 6156.372080] usb 1-2: device descriptor read/64, error -71
[ 6156.588105] usb 1-2: device descriptor read/64, error -71
[ 6156.804074] usb 1-2: new high speed USB device using ehci_hcd and address 33
[ 6156.921067] usb 1-2: device descriptor read/64, error -71
[ 6157.137106] hub 1-0:1.0: unable to enumerate USB device on port 2
Regards,