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Hi all since this is my first post here. But not my first time here. I have used askubuntu a lot, the last few weeks and i have found answers to many questions i had. Unfortunately since im a linux noob i can't provide any answers. Yet ;D To the point. I have installed 14.04 on a dell laptop with one onboard and one discrete nvidia gpu. My problem is that i can't make ubuntu to "see" and use the nvidia gpu. After reading around, i have done several things. I 've installed the drivers (correctly i think), i installed nvidia prime and prime indicator (cause i want to be able to choose which gpu is used when) but nothing. I can't post images so i 'll try to describe my problems.

1 on the additional drivers tab, i get "no additional drivers"

2 when i run "nvidia-xconfig" i get "command not found"

3 when i run "lspci -vnn | grep -i vga" it lists only the intel onboard gpu

4 the prime-indicator has a dimmed entry saying: sh 1: glxinfo: not found

5 when i click open nvidia settings on the left column it has only 2 entries Application profiles and nvidia-settings configuration

6 running "prime-select nvidia" gives two errors. "alternatives not set up properly" and "nvidia mode can't be enabled"

7 running "prime-select query" just gives unknown

Any help is appreciated.

ps.

last week i had it working using prime but i had to uninstall and reinstall ubuntu, for disk space related reasons, and now i can't get it to work again and i can't remember what i dit to make it work the 1st time". :D

Periklis Kayritsas
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2 Answers2

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Ok, solved it. I purged everything (driver,nvidia-prime,bumblebee). Then installed the latest nvidia drivers (as shown here and then installed nvidia-prime and prime indicator as shown here and here.

I had some problems after rebooting. The monitor was working on 800x600 and there was nothing i could do about it so i switched to the intel gpu which led me to a black screen that was displaying a bunch of stuff and then froze.

After hard reseting though everything was back to normal and working. Now everything works as it should.

Hope the info helps someone else.

Community
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Periklis Kayritsas
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Simply install bumblebee and bbswitch. I get four times the performance with a 630M compared to HD 4000 graphics.

Uninstall whatever drivers for Nvidia that you installed apart from bumblebee. Follow that wiki.

xyz
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