I have a not very well working gfx card (nVidia geForce Go 7400) in my old laptop which prevents the screen from switching back on after waking up from suspending. The system (Ubuntu 14.10) resumes, so I can hear sounds, use mouse, keyboard, etc, but the screen stays black without lights, so completely off. Whenever it accidentally suspends, I have to blindly navigate to the shutdown menu and power it off, losing all non-saved data.
Additionally I can only boot when it is cold, so I have to wait about 15min before I can restart, so this problem is pretty annoying.
What I want to accomplish now is that the system is not able to suspend anymore at all!
It should be a solution that works on all Linux distributions, with every DE (I use Unity and LXDE currently) and globally for all users, including no logged-in user (unity-greeter/lxde-greeter).
Of course it has to cover all possible suspension triggers like closing the lid, inactivity for long time, weak battery, clicking option in the shutdown menu, entering terminal command and whatever else exists.
Thanks for your suggestions.