OS: Linux Mint Mate 18.3 / 64 bit
Graphics card: Palit GTX 460 / 1Gb memory
Latest Proprietary driver (from repo): Version 384.90
Right (MAIN) monitor is DVI / Acer AL2423W (Screen 0)
Left (second) monitor is DVI / Samsung S27A650D (screen 1)
Motherboard: Asus P7P55D
Prosessor: Intel Core i7 CPU 860 (2.8 ghz)
Memory: 12 Gb
Fresh install of Linux Mint 18.3 Mate.
EDIT: nvidia-bug-report.log in post #6
When I set up proprietary driver (instead of nouveau), and in Nvidia X server settings I set the system for “separate X screens” The monitor nro 2 stays black, all I can see is normal mouse cursor, I can not do anything in there. Monitor 1 works normally.
When I start for example firefox for second monitor (with DISPLAY=:0.1 firefox), then both monitors start blinking in turns. Firefox does start on second monitor, but it seems something is badly conflicting, since output is so messed up.
Same thing was when nro 2 monitor was VGA-monitor, now DVI.
I need separate X screens, it is not an option to use something else, so do not ask me to do that.
Problem started from Linux Mint 17.3 and up to 18.3, and all variations I tested in between. In mint 17.2 everything works normally.
Any help here? Does someone have similar setup working?