I searched this topic before I started a new topic. Results:viewtopic.php?f=90&t=10049&p=62150&hilit=X300+Latitude#p62150viewtopic.php?f=49&t=10640&p=66181&hilit=X300+Latitude#p66181
well, what made me additionally open a topic is, that I know that it can work and in the old topic they use older versions of mint. I used ubuntu ultimate for a few months before I installed the new Mint. With ubuntu ultimate based on Feisty Fawn the laptop didn't freeze on closing the lid. It just normally turned off the monitor and locked the screen. On opening, everything was ok, but the suspend to ram function didn't worked.
Now, in Mint 5 the suspend to ram function work, after removing of compiz. Closing the lid causes a freezed screen, with the background of the boot splash.
I know from the older topics that the problem is within the ACPI but why does it work with a normal Ubuntu and not with Mint Linux ?
I'm a newbie in linux and it would be great if someone could help me with this problem.