I recently purchased a Toshiba laptop that came pre-installed with Windows 8; however, I did not like this O/S and decided I would try Ubuntu 12.10.
When I go to 'Shutdown' or go via terminal and type 'Poweroff' with Ubuntu 12.10 (I've also tried with LinuxMint 13) my laptop will shutdown for 1-3 seconds then turn itself back on when the power adapter is plugged in.
Has anyone experienced or heard of this issue?
A solution I've found, is that if I unplug the laptop before shutting it down, that it will remain powered off.
When a Windows O/S has been installed, the laptop powers off while the power adapter is plugged in.
Mr J Lepage