i'm using ubuntu 14.04 and i'm facing a problem whereby everytime when i boot up, after the the ubuntu logo, my screen just stays black. I have to close and open the lid of my laptop in order to see the screen again. What's the cause of this problem? How can i fix it? I'm using an Nvidia GT820M
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it seems, that there is again a regression for the Nvidia driver and the gpu-manager of Ubuntu.
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1362848
This is an everlasting and frequently returning problem. Normally this gets fixed within a short time. In the meanwhile you could try a newer driver from ubuntu's "fresh graphics driver" ppa or switch to an intel GPU (if your notebook offers this option) by switching to tty1 (Ctrl+alt+F1), login and sudo prime-select intel followed by sudo service lightdm restart (the same procedure with "nvidia" instead of intel for switching back).
Hope this helps fixing your Problem temporarily.
Rene Greuel
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