[RawToxic]

What are the ratings of the power supply you are using? I had the same problem that you are describing and had to upgrade from a 600mAh power supply to a 1000mAh or 1A power supply. After doing so fixed my problem. The current retropie image increases the voltage by +2 and sets the overclocking to a medium setting by default, which requires more available power.

[RawToxic]

I just did a install as you describe and am using the same controller. I just got this all working yesterday but started on Tuesday so I understand your woes. I did not run into the problem like you are experiencing but I’d like to try to help. I think your problem may lie with the USB bus activity itself.

A question that needs to be asked is please explain any and all USB peripherals that you have connected to the PI device. Hub (Powered or not), controller, keyboard, etc.

and run this command and report back the results.

lsusb

Maybe there is a conflict with another USB device on your bus or for some reason the bus is having power issues. If you are using a powered USB hub, check to make sure it is one that is certified for use with Raspberry Pi. Some feed power back into the bus and can cause some strange things to occur.

[RawToxic]

I picked up a 1A (1000 mAh) usb brick like you would use to charge an iphone. My problem with the USB bus losing power when an emulated game is launched is now gone. Thank you to those who replied and confirmed my suspicions. Now I’m finding that my controller buttons for some reason didn’t map globally when I ran the source build to rebuild the retroarch config. No worries. I will just set them in the config file manually. Thanks again. Time to play! :)

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