I decided to switch from Windows 7 (10 hours of battery work, suspend/hibernate modes work great - Asus U36Jc) to some Linux.
First there was Ubuntu 11.04 (with all current updates) – 4 hours of work, suspend/hibernate modes didn't work (black screen not reacting to any input, requiring reboot). Disabling NVIDIA graphics card didn't help, enabling it again also didn't help.
Then there was CentOS 6 (with all updates) – same problem, 4 hours of work, suspend/hibernate modes don't work (requiring reboot).
So the question is, is this a problem with these distributions, the laptop or its stupid owner? Do other distributions have the same problem and how can I resolve it?
I still think that the problem is that the laptop has two graphic cards ndash; the Intel graphics and the NVIDIA card, but disabling NVIDIA doesn't help.