USB ports not working on raspberry pi 2 B

KN4THX

@culebra You don't want to use a phone charger with a Pi.

Did you try holding down a button on the keyboard and controller?

I assume it's new and you haven't enabled ssh yet?

Culebra

yeah, tried holding button a on keyboard and controller, and tried other buttons as well on controller, wont work...

this raspberry isn't new, i got this from my friend. i have used OSCM (open source media center). usb ports worked fine.
i think my friend used some much older retropie with this, like many months ago, and it worked also fine.

how do i enable ssh?

mitu

@culebra said in USB ports not working on raspberry pi 2 B:

how do i enable ssh?

It's detailed in https://retropie.org.uk/docs/SSH/#enable-ssh. Login from your pc to the PI after you enable SSH and run lsusb to see if of the USB devices you have are detected. I'd try to connect them one by one - keyboard first.

Culebra

ok, i enabled ssh. when i enter that lsusb command, it says:

Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

still no usb ports work

mitu

@culebra Are you using a case for the PI or are you connecting the USB devices directly ? Run dmesg | tail after you insert an USB device and post the output here.

Culebra

ok, i inserted only the usb keyboard dongle, entered dmesg | tail and it says

[ 616.043864] usb 1-1-port2: over-current change
[ 616.299864] usb 1-1-port2: over-current change
[ 616.555863] usb 1-1-port2: over-current change
[ 616.811861] usb 1-1-port2: over-current change
[ 617.067866] usb 1-1-port2: over-current change
[ 617.323863] usb 1-1-port2: over-current change
[ 617.579863] usb 1-1-port2: over-current change
[ 617.835871] usb 1-1-port2: over-current change
[ 618.091867] usb 1-1-port2: over-current change
[ 618.347859] usb 1-1-port2: over-current change

mitu

@culebra Looks power related, make sure you use a proper power source - NOT a phone charger. I see you have an actual power adapter, but from a certain review, it doesn't seem to be very reliable and it might not supply the necessary power to your PI.
I'd advice to get a reliable power source - the official one from RPI is good - and re-try.

Culebra

damn, the one im using now (not phones charger). worked fine with my friends raspberry pi model 3b and 3b+.

mitu

@culebra Try another power outlet in your home, but slim chance that will fix it.

rbaker

@culebra said in USB ports not working on raspberry pi 2 B:

DC 5V A2.

2A is not enough