ubuntu 18.04 nvidia GF108GLM quadro 1000m external monitor not works


I have lenovo ThinkPad W520 with ubuntu 18.04 nvidia GF108GLM quadro 1000M.

I using x.org X server – Nouveau display driver, because only it works for me.

After every update I have problem with my external monitor - he wont turn on. I need to go to Software & Setting and to check/applay changes to activate nvidia-driver-390 and to back to Nouveau display driver and than reboot the system.

But from today that approach wont work as well.

Is there some solution for this problem.


Please see this:

Perfect @generix,

Change of {modeset} value helped…

Thank you