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I just bought a new laptop with both an Intel HD 5500 and nVidia GeForce 920M, and I'm running Ubuntu 16.04 LTS. According to Google, all I have to do is install the proprietary drivers and choose between cards in the Additional Drivers tab in the Control Panel. As you can see in the attached file, that's what I have done, but nothing seems to happen. Not logging out and back in, not rebooting the laptop. What am I doing wrong?

Additional Drivers Tab

lspci -k | grep -EA2 'VGA|3D' 

00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
 Subsystem: Lenovo Broadwell-U Integrated Graphics
 Kernel driver in use: i915 

04:00.0 3D controller: NVIDIA Corporation GK208M [GeForce 920M] (rev a1)
 Subsystem: Lenovo GK208M [GeForce 920M]
 Kernel modules: nvidiafb, nouveau, nvidia_361
Pilot6
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Raúl Valiño
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    It is not clear what is the problem. You installed drivers. You can switch the adapters in Nvidia X Server Settings. – Pilot6 Jun 21 '16 at 09:47
  • I do, but the change does not happen, though. The Intel Graphics are still running, according to the system. – Raúl Valiño Jun 21 '16 at 09:48
  • Where do you see that "Intel Graphics are still running"? Anyway they should be running. Dual graphics do not disable Intel completely when you switch to Nvidia. – Pilot6 Jun 21 '16 at 09:50
  • http://askubuntu.com/a/661924/167850 – Pilot6 Jun 21 '16 at 09:51
  • When I run "lspci -nnk | grep -i vga -A3 | grep 'in use'" How can I know I'm using one or the other? – Raúl Valiño Jun 21 '16 at 09:52
  • Run prime-select query and you will see. – Pilot6 Jun 21 '16 at 09:53
  • And you do not switch adapters in Additional Drivers Tab. You install or remove drivers there. You look into a wrong place. – Pilot6 Jun 21 '16 at 09:53
  • It says "unknown". – Raúl Valiño Jun 21 '16 at 09:54
  • Please [edit] your question and add output of lspci -k | grep -EA2 'VGA|3D' terminal command. – Pilot6 Jun 21 '16 at 09:55
  • lspci -k | grep -EA2 'VGA|3D'

    00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) Subsystem: Lenovo Broadwell-U Integrated Graphics Kernel driver in use: i915 -- 04:00.0 3D controller: NVIDIA Corporation GK208M [GeForce 920M] (rev a1) Subsystem: Lenovo GK208M [GeForce 920M] Kernel modules: nvidiafb, nouveau, nvidia_361

     – Raúl Valiño Jun 21 '16 at 10:08
  • I asked to [edit] your question and add the output there! The problem must be with SecureBoot. Disable it in BIOS. – Pilot6 Jun 21 '16 at 10:09
  • Yep! That was it. Thanks so much Pilot6. – Raúl Valiño Jun 21 '16 at 10:20

3 Answers3

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The problem is that in Ubuntu 16.04 with UEFI and SecureBoot enabled unsigned kernel modules do not load.

In your case nvidia module is not loaded. The module is not signed. That should be fixed as a bug.

Disable SecureBoot and the problem should be fixed.

Pilot6
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Find the nvidia management app. Type nvidia in the dash to find it. There you can choose which profile you want to be applied, weather

  • performance mode (nvidia drivers will used)
  • eco mode (intel drivers will be used)
SAdATT
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There is a solution that might work for you it's a bash script which switches between nvidia and intel video cards. Here's the link: https://github.com/bauca/graphics-switcher

Bruno
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