I have a dell l502x laptop with the infamously screwed up hybrid graphics card system (NVIDIA GT540m and Integrated Intel GC)
I have a freshly installed ubuntustudio 16.4.01 LTS running dual boot with windows 10; After installing the proprietary, tested NVIDIA driver 361- recommended at the 'Additional Drivers' tab, a reboot gives a blank screen with the mouse stuck at the top right corner, and nothing works but a forced reboot via long-pressing the main power button.
I have tried all the different driver versions and all the different PPA repositories (xorg-edgers, graphics-drivers etc), the same issue persists.
The system however reboots successfully if the 'intel' card is selected by the command
sudo prime-select intel
when the NVIDIA card is selected
gives the following error
Error: couldn't get an RGB, Double-buffered visual
lspci -k | grep -EA2 'VGA|3D'
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics Controller
Kernel driver in use: i915
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev ff) Kernel modules: nvidiafb, nouveau, nvidia_361
bbswitch, 0.8, 4.4.0-38-lowlatency, x86_64: installed nvidia-361, 361.42, 4.4.0-38-lowlatency, x86_64: installed
glxinfo | grep OpenGL
Error: couldn't find RGB GLX visual or fbconfig