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I can't use NVIDIA drivers installed via PPA or from NVIDIA sites. Everytime I try to boot after installation, I end with black screen with static cursor on top left corner. But when I choose drivers in section Additional drivers, it boots BUT I can't change to NVIDIA nor Intel via prime-select command. It shows something with alternatives not set or something like that.

Log included

P.S.: I also had issue about NVIDIA driver, which cause to freeze screen, but sounds and everything else was still working. Temporary solution was CTRL + ALT + F1 then CTRL + ALT + F7 but it happend after few seconds/minutes later. It mostly happens when playing minecraft. Don't you know about anything about it? Is it bug?

Thanks for answer Laptop Specs: CPU: Intel i3-2328M 2.2GHz VGA: NVIDIA 620M RAM: 4 GB OS: Ubuntu 14.04 (using Unity or Cinnamon)

marked as duplicate by Evandro Silva, αғsнιη, mikewhatever, Aibara, s3lph Jan 1 '15 at 23:54

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • This seems to be exactly to be the same issue as in the thread i just solved with cerr. Try to reinstall nvidia drivers as in link to duplicate. – kofrezo Dec 6 '14 at 21:42
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Try to reinstall your nvidia drivers for your card. For example:

sudo apt-get install --reinstall nvidia-331

  • Result: Intel - cinnamon running in software render mode, NVIDIA - completely screwed desktop (black wallpaper, no buttons, etc. ...) – Radoslav Fatura Dec 6 '14 at 22:51
  • You need to install the NVIDIA drivers for your graphics card. The command I wrote ist just an example. Check the ubuntu Wiki page and the NVIDIA homepage to find the correct driver for your device. – kofrezo Dec 7 '14 at 11:46
  • Newest WHQL driver is 340.58. I will reinstall Ubuntu tomorrow and try to install it via ppa(?) – Radoslav Fatura Dec 7 '14 at 17:19
  • Thats a way to do it, too ;-) I had some luck with installing the drivers by directly downloading them from the NVIDIA homepage when repositories didn't work. You could try this, too if ppa does not work. – kofrezo Dec 8 '14 at 7:47
  • HALLELUYAH. I managed to get it working by installing BETA 346.16 via PPA. Still, what if it freezes? What should I do then? (background sound and everything is working, check P.S.) – Radoslav Fatura Dec 8 '14 at 18:08

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