acpitool

Try:

acpitool -w
   Device       Sleep state     Status  ---------------------------------------  1.  PB2          4            disabled  2.  PB3          4            disabled  3.  PB4          4            disabled  4.  PB5          4            disabled  5.  PB6          4            disabled  6.  PB7          4            disabled  7. OHC1          3             enabled  8. OHC2          3             enabled  9. EHCI          3             enabled  10. KBC0         3            disabled  11. MSE0         3            disabled  12.  P2P         4            disabled  13. LANC         3             enabled  14. AUDO         4            disabled  15. MODM         4            disabled  16. AZLA         4            disabled