I have an old laptop that I want to give to a individual that is dealing with some financial difficulty. The laptop is an old Toshiba Satellite A110 (Celeron M with 1GB ram, 50GB HD) that I picked up for $15 at a garage sale. Since it did not have an OS, thought I would give Ubuntu Mate 16.10 32bit a try. So far, it runs pretty good on this old laptop other than one issue. When the laptop boots, just after the loading screen, it enters into a sleep mode. Hitting a key on the keyboard wakes it up again and then gets me to the login page. Then once I get to the login page, it goes into sleep mode again, and will do so in about 30 seconds if I don't log in. Once logged in, the laptop does not go into sleep mode.
If I try to reboot or shutdown the laptop, it just enters into a sleep mode again. Only method to shut down the laptop is to open a terminal and perform a sudo shutdown in terminal.
I have tried updating GRUB with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off" - did not fix.