I've got a little problem for a week or so. I think the problem began after installing some updates, including a new kernel, glibc and other stuff. When I close my laptop (Lenovo Thinkpad T430, my sister has the same problem on a Dell Inspiron 1545), the system hibernates. But when I open it, there is the KDE screensaver and the mouse icon, but the system is frozen: no reaction to keyboard or mouse input. I can't even change to a terminal using Ctrl+F2 (or all the other F keys). My desktop computer has no problems... I guess there's a broken driver? I would be glad if I could go to lunch without shutting down the computer.

Thanks for your answers
schroedingerscat