I have the same issue on Toshiba Satellite L20-182 (basically, it's the same as L20-183, it just has got less RAM and smaller HDD, AFAIK). I can't shutdown my laptop normally, lsusb doesn't work, re-pluging the mouse (Logitech BT 58 OEM optical mouse) doesn't help (the computer doesn't even provide power for the mouse, it's red light is off), my pendrive doesn't work either. However, graphics acceleration seem to work flawlessly.
-- [FGLRX] kernel drivers kills USB subsystem https://launchpad.net/bugs/41272 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
