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My system is Dell XPS L502X, with NVIDIA graphics card 525M. For your notice, it is different from this and not completely related to this.

I was having problem of black screen after opening the Ubuntu 14.04. To get out of it I reinstalled Ubuntu 14.04.

After re-installing and adding NVIDIA drivers, system is getting freezed, frequently. So only option left is to press,Alt+F1, then Alt+F7

Already selected the option, while installation

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L.K.
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  • Could you ask about one problem at time. The errors with apt-get have their solution, the problems with the login has another solutions, the problems after installing the Nvidia drivers, another, etc. Instead ask a question per problem. – Braiam Sep 21 '14 at 19:23
  • @Braiam Read NB ,it contains all the information. Installed NVIDIA. – L.K. Sep 21 '14 at 19:25
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    I read that, still why you include the other problems? Focus your question in one issue at time. – Braiam Sep 21 '14 at 19:32
  • Did you run 'sudo apt-get install nvidia-current'? – saptarshi nag Sep 22 '14 at 04:40
  • open "Additional Drivers" and install this one Using X.OrgX server - Nouveau displary driver from xserver-xorg-video-nouveau (open source) I had the same problem, it's related to Nvidia diver. – αғsнιη Sep 22 '14 at 04:54
  • @saptarshinag I have already done that, problem is occurring afterwards. – L.K. Sep 22 '14 at 08:50
  • Now, what you want to fix? – Braiam Sep 22 '14 at 12:12
  • System freezes frequently, so, how to get out of this problem, once and for all. – L.K. Sep 22 '14 at 13:23
  • Ok then try to activate the drivers.Go to Dash->additional drivers.A window will come select each of the drivers and click on activate.Remember activate one driver at a time(i.e.,activate a driver and then see if your problem persists or not,if persists then proceed one by one similarly.If problem solved after activating a driver then no need to proceed). – saptarshi nag Sep 22 '14 at 14:46
  • I have already selected it, after ubuntu installation(then restart, all those things), freezing is random, so difficult to say, when will happen. – L.K. Sep 22 '14 at 15:03
  • maybe you should clean your hardware? is there a lot of dust in your machine? – LittleByBlue Sep 22 '14 at 15:37
  • I think you've tried the other versions available? I was getting problems with nvidia too, but they were gone after changing the package. – Huskell Sep 24 '14 at 06:17
  • @Huskell How to go about it, help me in this matter. – L.K. Sep 24 '14 at 07:39
  • @lavkush Well, just select another of the options in the window you posted and click apply changes, a little bar will show in the lower right, when it's done reset the PC. Mine was the (proprietary, tested), then I've changed to (proprietary only) NOT legacy (last option in your SS). My PC is exactly the same and have the same video card, I'm hopefully thinking it will work. – Huskell Sep 24 '14 at 15:09

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Are you sure it's 100% related to the video driver? You could try the following to speed up your computer, too:

  • Install the packages preload and prelink. These take certain actions to make the system faster.

    Execute sudo apt-get install prelink preload in a terminal.

  • Reduce Swap usage. The default swappiness value is 60, which may be too high.

    Open the file /etc/sysctl.conf and set the swappiness parameter: sudo nano /etc/sysctl.conf in a terminal. New line at the end: vm.swappiness = 10, then another linebreak, save with Ctrl+O.

If you apply these changes, your computer should get faster after a reboot.

For your touchpad, you should ask a new question, since this is another problem.

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s3lph
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  • My problem is related is to Drivers only, as when I selected my Graphics driver to Intel, my laptop was not able to restart, so got stuck on a black screen. If this won't harm my system(pardon me, for the ignorance), I will go ahead to implement them. – L.K. Sep 23 '14 at 18:21
  • Those changes may only harm your system if you do a typo at vm.swappiness = 10. Otherwise they are safe. – s3lph Sep 23 '14 at 18:24
  • Can this problem be, because of system is using NVIDIA extansivley, so slowing down. So if unnecessary use can be stopped. – L.K. Sep 23 '14 at 19:37
  • Do I need to add like this, #vm.swappiness = 10 – L.K. Sep 27 '14 at 16:21
  • This will work, you will be the owner of the bounty. – L.K. Sep 27 '14 at 16:27
  • @lavkush no, without the #. this would make the line a comment and therefore useless. – s3lph Sep 28 '14 at 01:30
  • After that also, it won't work – L.K. Sep 28 '14 at 09:48