USB Devices not responding when I switch user

[AaronPratt]

Please help, I have just noticed that my usb devices are not responding when i switch users unless i unplug them, and plug them back in. Oddly, it doesn't happen when i restart my computer and log in, only to log off, or switch users. Help would be appreciated!

 

[gbhall]

cannot help without any idea of what your computer is, and it's operating system