Nvidia-331 Nvidia-Settings Prime Profile Switching Error

I'm having an issue with my nvidia-331 driver. I can't seem to switch between Intel and Nvida via nvidia-settings. The option is there but when I click 'nvidia' a blank error window pops up. It's very weird because I've been using the Ubuntu daily for a while on 14.04, and it was not until yesterday's update that I've had this issue. Same driver. Does anyone know how to fix this? Thanks. I've tried a clean install and have the same issue.

Solution 1:

I also had the same problem but only after I made some modification on compiz.

For the fix, I just reinstalled the nvidia drivers and nvidia prime with

sudo apt-get purge libvdpau-va-gl1 bumblebee* nvidia*
sudo apt-get install nvidia-331 nvidia-settings nvidia-prime

Solution 2:

If you encounter the problem with prime like an empty popup error in nvidia-settings panel you can see the bug in Launch Pad 1310023. I have encounter a similar problem and I can correct them with that:

sudo update-alternatives --config x86_64-linux-gnu_gl_conf
sudo ldconfig -n
sudo update-initramfs -u

then reboot and see if it works

Solution 3:

Here, this is what worked for me:

I tried:

sudo update-alternatives --config x86_64-linux-gnu_gl_conf
sudo ldconfig -n
sudo update-initramfs -u

And rebooted, with no changes. So I tried:

sudo apt-get purge libvdpau-va-gl1 bumblebee* nvidia*
sudo apt-get install linux-headers-generic
sudo apt-get install nvidia-331 nvidia-settings nvidia-prime

Reboot. Still, no changes, and the same blank error message in nvidia-settings when I try to switch to me nvidia card.

I tried switching manually, using sudo prime-switch nvidia, and configuration info was updated. I tried again, and nvidia-settings asked me to log out and log back in and...voilà! I've got it working!

In my case, it appeared that before being able to switch using nvidia-settings UI, I had to manually switch first as superuser, so as to generate the proper configuration!

Good thing I tried that, or I'd still be tinkering about, installing other drivers! Hope this proves useful to someone else!