Comment 29 for bug 1615734

NVidia 384.90 - latest update - things seem to be taking a turn for the worse.
Now, I'm using just a single external monitor. Every time the screen sleeps after being idle for some time, it cannot be turned back on. As simple as that. No matter what I press. Not even by going back to console (ctrl+alt+f1) and overwriting monitors.xml. The only solution is to disconnect the external monitor. So I'm back at a single display - the laptop's.

As an even broader problem, trying to change display configuration using xrandr seems to be at its all-time worst. Almost any change will cause the display to crash back to blinking.

After being a long time Ubuntu user (6+ years), I can safely say that Ubuntu 16.04 on Lenovo P50 is my worst user experience in terms of stability - especially that of the display driver, when using my multi-monitor workstation. I have never had to tweak, reset configuration, kill my session or simply reboot so many times because of display issues. And its even worse since Lenovo P50 is "certified" in Ubuntu.