Hy all! The problem is not only on nVidia cards!
The same thing (black screen on Ubuntu) happens on AMD ATI cards also! The problem seems to be due to the fact that Ubuntu and derivates distros based on Ubuntu (Mint, Mate, etc.) detects an unreal, extremely high Graphic Processor Unit temperatures from GPU sensors (DOUBLE THAN THE REAL VALUES), and then Ubuntu kills the graphic output in order to protect the graphic card from overheating. For more details read this post here: http://askubuntu.com/questions/655200/black-screen-ubuntu-14-04-a-possible-cause The post is way too big to copy/paste it here. Please check the GPU sensors temperatures on Ubuntu 14.04 also within your systems. Of course that can be done only by those who systems are still showing at least the Ubuntu desktop, in order to run the Terminal. I hope that somewone will find a solution for this BLACK SCREEN issue. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-331 in Ubuntu. https://bugs.launchpad.net/bugs/1362848 Title: ubuntu 14.04 after install nvidia binary driver 331.89 black screen and freeze Status in nvidia-graphics-drivers-331 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-340 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-346 package in Ubuntu: Confirmed Bug description: I'm using Ubuntu 14.04 64bit, after install nvidia binary driver 331.89 from Additional Drivers application then reboot, it shows black screen, no login window, I even can't use ctrl+alt+F2 to switch to text mode, then I reboot and go to recovery mode, use 'prime-select intel' to switch to intel GPU and reboot, everything is fine, but as soon as I switch to nvidia GPU, still same issue. OS: Ubuntu 14.04 64bit Laptop: HP ENVY 15t Nvidia GeForce GT 740M + Intel HD 4600 Desktop: Unity Kernel: 3.13.0 CPU: Intel® Core™ i7-4700MQ Thanks! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1362848/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
