I have a Sony Vaio, SVE14A2V1RP, with Windows 8 pre-installed; went legacy / disabled Secure Boot, erased everything and installed Windows 7. Everything works just fine, except the laptop does not go to sleep when the lid is closed. this option is simply not available at the power management, the only two possibilities is to "do nothing" or "shut down".
I've been reading that this somehow depends on the video drivers. In the device manager, the Intel card is found, but the other (Radeon 7670M) is not. Tried installing all the various drivers, to no avail.
PS the device id is PCI\VEN_1002&DEV_6840&SUBSYS_9096104D&RE…