08-06-2011 02:27 PM
08-06-2011 07:59 PM
I had this happen under Windows 7 a few times (same drive) on an X200 tablet. My best guess was that USB ports were powered down as part of the power scheme. I manually unchecked "allow computer to turn off this device to save power" in USB Hub settings via device manager, and it has not happened since then. If this is the cause (and it may not be), I don't know if Linux has equivalent settings.