I am using ubuntu 11.10 on Acer aspire 4930. I am unable to use any of the usb drives (Flash or external hard drives) on my system. When I connect my mobile, it starts charging, so there is nothing wrong with the ports but no drive is detected. Also, the devices are detected on other operating systems so there is nothing wrong with devices
My devices used to work on ubuntu 10.04, but stopped working ever since i upgraded to ubuntu 11.04 and still don't work in ubuntu 11.10
I tried mountmanager and it was unable to detect any device on my machine.