Comment 549 for bug 993187

NVidia GEForce 610M and additional integrated Intel video card.

Intermittent hard freezes on Ubuntu and Mint - no traces as to why in any log file anywhere. Tried fresh install of 12.04 with different hard drive. Worked perfectly until I installed nvidia-stable drivers from Ubuntu repository - hard froze within minutes.

Installed "nouveau" drivers and removed all traces of nvidia drivers. NOTE: I had to remove the nvidia drivers in order to make my system stable. Other posts had said that was not necessary - for me it was.

One nouveau drivers were active. I issued the following:

~$ sudo apt-get --purge remove nvidia-common nvidia-current nvidia-settings
~$ sudo apt-get install ubuntu-desktop

ubuntu-desktop was a dependency of nvidia-common and therefore removed with the purge - that's why the install of ubuntu-desktop afterwards.

My system has been rock solid since.