Have gone back to Linux on the Toshiba AC100 since it is probably of more use that way as a general purpose machine. After installing the proprietary NVidia driver, which is supposed to be required for HDMI out, found that suspend / hibernate don't work any more. The system does not come out of suspend - no display. Battery life seems to be only 4 hours now. Not sure if this is due to Linux or due to lessening of life over the last few months.