Originally Posted by MaxLinux
I have one system that will not recognize flash drives plugged into a
hub. Nothing happens! This was true with two different brands of USB 2 hubs
(Radio Shack Gigaware and D-Link). There are no flash drive recognition
problems when using these two hubs on a different system.
A surprising solution occurred tonight. Here in Greenville SC we had an intense thunderstorm and hail which knocked out the power. Shortly after I brought my system back up, I began to use the flash drive. Just as I was reaching for the hub's usb cable to unplug/replug it, up popped the flash drive in Konqueror!
Like many Linux systems, this one has been running for so long I can't remember when it was last booted. I have disconnected/reconnected the hub's ac adapter and usb cable many times, but it never entered my mind to try rebooting the computer itself. I would not have thought that rebooting would have any effect on this problem. So it took a power failure for me to discover this!
So everyone out there add "reboot the system" to your list of things to try if you have a funky behaving usb hub.