I have built and installed an untouched Linux 4.5.2 kernel. Then I downloaded NVIDIA device driver for my graphics card. The driver version is 367.35 and my graphics card model is GeForce GTX 960M. I have also downloaded and built MPlayer-1.2.1 and run 10 H.264 videos with frame-sizes of 1920*816. When I use the default scheduler (cfs), nothing wrong happens. But When I change the scheduler to CBS (SCHED_DEADLINE), the system stops (No kernel panic). The scheduler switch is done using sched_setattr system call at the beginning of MPlayer source code.

NOTE THAT, the same code works perfectly when I use the default Ubuntu 16.04 system with the NVIDIA driver downloaded from Ubuntu repository.

It seems that there is a problem with the driver installation. How can I confirm that the installation is OK?

Don't know if this will work, but worth a try. Have you tried the beta driver? Its version number is 370.23. I am running kernel 4.7.2, but my card is older than yours: GT520. The standard driver does not compile for me, but the beta driver does.

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You are right. The problem was version mismatch! I changed to Linux 4.7.2 and the latest stable version of the NVIDIA driver (367.44) works for me!

As a follow up, I also got version 367.44 to work with kernel 4.7.2. Its good to know that both the latest stable and beta versions work. FWIW 367.44 has a newer release date than 370.23.

Unfortunately, the problem is still there. Any change in CBS implementation leads to system halt. No problem happens when I use the default nouveau driver on hardware or in virtual environment. I think that I have to give up after wasting the last week.