Nothing happens when I close the сражение or press power button

I just installed on Ubuntu 14.04.3 on my laptop (Lenovo Тинкпад Кс230). Everything works умер except:

• closing the сражение
• прессинг power button

while the computer is on does nothing, even though I have the settings (under Систем Сеттингс => Power) that both should trigger hibernation. (Hibernation works умер when I pick it from the меню; also, nothing happens if I set the power button/close сражение actions to suspend/shutdown, either.)

Using в рукописный шрифт that prints out the оцените of

/proc/acpi/button/lid/LID/state

every second and then closing and reopening the сражение шоу that the event is not detected at all. I have kernel 3.16.0-38-generic installed.

How хан I fix this?