Hi, I hope I'm posting this in the right place!
I'm using Ubuntu 12.04 and have the following desktop environments installed on my system: Unity, Gnome Shell and Cinnamon. My favourite by far is Cinnamon, but I'm experiencing a very annoying problem with it.
After a while of using my computer, the system will suddenly becoming unresponsive. It's not a full freeze, as I can still move my mouse and the cursor will change depending on what item it's hovering over (still shows text cursor over text, hand over links, etc.). Nothing I do can unfreeze it, as I cannot launch the terminal, close windows, use the restart Cinnamon applet, etc. The only thing I can do is shut my computer down using the button.
After it's happened once, it starts happening more and more often. For example, the system will work perfectly for hours, then freeze. Once I've restarted, it will happen after maybe 20 minutes. Freeze, restart. Ten minutes. It's never the same time, however.
I do not have this problem with any other desktop environment and I see no reason for it to happen with Cinnamon.
It does not seem to matter what I'm doing, as it will happen when I have no apps open, when I have Firefox open, when I have Chromium open, when I have LibreOffice open, etc.
Any help with this problem would be appreciated!
My laptop is a Toshiba Satellite C670. I cannot test Cinnamon on another computer in the house for this problem, unfortunately.