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I have an Optimus laptop, a Dell XPS 15 L502, which I've had for a few years and have tried various things on (bumblebee, nvidia-prime, linux kernel optimus support).

The graphics card is an NVIDIA GT 540M.

I upgraded to Ubuntu 14.04 a few days ago and wanted to try nvidia-prime again (it wasn't working so great for me on 13.10), but nvidia-settings only tells me that it is not supported.

Software and Updates recognises the Nvidia card and drivers. Nvidia Settings currently gives me this:

** Message: PRIME: No offloading required. Abort
** Message: PRIME: is it supported? no

I've tried to purge and reinstall nvidia drivers a dozen times, I've tried with and without xorg.conf files, but still always the same thing.

I've followed all the guides I could find on StackOverflow, AskUbuntu, and various other places.

I'm happy to provide parts of certain log files if needed. I haven't been able to glean much from them (though I'm not exactly an expert).

I would be glad if someone could give me any hints as to why this is not working for me while it does seem to work for so many others.

EDIT: I was having problem with booting into "low-graphics mode", but that was due to a bad lightdm configuration that broke when I upgraded. I also had some segmentation fault issues with nvidia-settings installing the wrong version of itself (this was fixed by reinstalling just nvidia-settings).

EDIT: Have also found this bug report:

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up vote 9 down vote accepted

I have the same portable, I was using bumblebee before. But since 14.04 it was not working anymore and so now I switched to nvidia-prime. This is what I did:


  • Install Nouveau driver through "Software & updates"

  • Remove bumblebee or other installed nvidia drivers:

    sudo apt-get purge bumblebee*
    sudo apt-get purge nvidia-*
  • An then reboot

  • Install nvidia 331-updates driver through "Software & updates" (should also install nvidia-settings and nvidia-prime)

  • Then reboot

Now run again nvidia-settings. This did it for me, more info here.

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I've fixed some of my other issues (thanks for putting me on the right track, but I still get the "is it supported? no" error message. Maybe it is the graphics card version? I've updated the question with the details (GT 540M). – dieuwe May 1 '14 at 22:00
I did just get this "working", but ended up having to uninstall nvidia again due to the massive instability issues I am having with my displays. Not sure if the problem is caused by nvidia or not, but it seems the nvidia 331 package now supports my hardware. – dieuwe Jun 7 '14 at 9:40

I had a similar problem. This is just a note to whomever else might find it useful.

Things started working once I re-enabled optimus from BIOS.

It seems the developers didn't do enough error handling. There should really be a bug report about that.

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