On Tue, Feb 19, 2019 at 8:30 PM Roger Quadros <rogerq@xxxxxx> wrote: > > 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? It is an embedded board. From Host PC, we are communicating to PIC on embedded board via USB port. > > > > >> 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
