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As in Cuda Quick Start Install I'm trying to install Cuda using .run file. My problem is that I didn't know how to disable server X. To do that, according to what I understood, I need to switch to runlevel 3, but I didn't know how to do it. I followed these steps but it didn't work.

Interface I get when trying to switch to runlevel 3:

How to switch to runlevel 3 ? How to install cuda on Ubuntu 16.04LTS?

Note: I'm using a virtual Machine and I couldn't write anything when that interface appeared.

David Foerster
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SarahData
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    Possible duplicate of [How can I install CUDA on Ubuntu 16.04?](https://askubuntu.com/questions/799184/how-can-i-install-cuda-on-ubuntu-16-04) – Panther Sep 22 '17 at 16:45
  • I checked that link. so it's not a duplicate the solution there didn't work for me. I'm using Virtual Machine I forgot to mention it at first. – SarahData Sep 22 '17 at 16:50
  • What did not work for you ? Also, FYI, I doubt cuda will work in a virtual machine but I am not sure. – Panther Sep 22 '17 at 16:59
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    From nvidia - https://devtalk.nvidia.com/default/topic/398347/cuda-programming-and-performance/cuda-on-dell-server-with-virtualization/ "CUDA will not work inside of a virtual machine. The GPU must be fully visible to the OS." – Panther Sep 22 '17 at 17:00
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    isn't that link too old? 2008 ..I mean things may change.. I wonder if so why didn't I find it in the official documentation – SarahData Sep 22 '17 at 17:01
  • You would have to ask on the nvidia or virtualbox forums. I dont think virtualbox has direct pass through of the GPU. Other technologies perhaps https://superuser.com/questions/945740/passthrough-graphics-card-to-virtualbox and https://forums.linuxmint.com/viewtopic.php?f=42&t=112013 – Panther Sep 22 '17 at 17:06
  • Well I think it's possible. Here an answer: https://stackoverflow.com/a/31627982/6837132 – SarahData Sep 22 '17 at 17:13
  • That link does not say it is possible with Virtualbox. Did you check your hardware with any of the links I gave you ? It is possible with Xen and KVM but with a limited set of hardware. – Panther Sep 22 '17 at 17:15
  • At any rate, runleves are somewhat obsolete terminology. You stop your display manager, lightdm, gdm, kdm, whatever you are using or boot to recovery mode and remount your root file system rw - `mount -o remount,rw /` and then install cuda. See https://askubuntu.com/questions/799184/how-can-i-install-cuda-on-ubuntu-16-04 . you will have a command line only interface. – Panther Sep 22 '17 at 17:21

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