Please keep linux-usb in cc. On 19/02/2019 16:50, Subhashini Rao Beerisetty wrote: > On Tue, Feb 19, 2019 at 8:06 PM Roger Quadros <rogerq@xxxxxx> wrote: >> >> Hi Subhashini, >> >> On 19/02/2019 16:30, Subhashini Rao Beerisetty wrote: >>> Hi All, >>> >>> [ Please keep me in CC as I'm not subscribed to the list] >>> >>> >>> I’m using an Ubuntu 16.04.4 LTS PC and when I connect an USB device to >>> my Ubuntu PC, I see the below mentioned messages in dmesg. >>> >>> >>> >>> [ 9012.287432] usb usb3-port1: over-current condition >>> >>> [ 9012.287739] usb usb2-port1: over-current condition >>> >>> [ 9012.495919] usb 2-4: USB disconnect, device number 3 >>> >>> [ 9012.495940] usb 2-4.1: USB disconnect, device number 5 >>> >>> [ 9012.615609] usb usb3-port1: over-current condition >>> >>> [ 9012.628513] usb 2-4.2: USB disconnect, device number 7 >>> >>> [ 9012.824274] usb usb3-port1: over-current condition >>> >>> [ 9015.304232] hub_port_connect: 12 callbacks suppressed >>> >>> [ 9015.304254] usb usb2-port4: connect-debounce failed >>> >>> [ 9015.512437] usb usb2-port1: over-current condition >>> >>> [ 9015.720767] usb usb2-port2: over-current condition >>> >>> >>> >>> I’d like to What these messages indicates? Is it a hardware problem >>> from host side(ubuntu PC) or device side? >> >> Can you try other USB devices? > Yes, on the same port other devices works fine. I tried connecting > Keyboard and it works fine. Basically I'm looking for how to debug > further for this type of issues. The device is drawing too much current which is triggering the overcurrent detection/protection circuit on the USB hub. What device is it? If it is an off the shelf device it might indicate a hardware fault and so time to buy a new one? > >> If it happens with just that one USB device, it is a device problem. >> -- cheers, -roger Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
