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How do I get [PRIME profiles] tab show up in nvidia-settings?

The situation is similar to the one described in this question, but this is on Ubuntu 18.04, and the nvidia driver is installed. Still nvidia-settings gives a CRITICAL error message in the console:

(nvidia-settings:3290): GLib-GObject-CRITICAL **: 09:03:31.871: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
GPU at BusId 0x1 doesn't have a supported video decoder

See lspci and apt-list outputs:

$ lspci -k | grep -EA2 'VGA|3D'
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
    Subsystem: ASUSTeK Computer Inc. UHD Graphics 620
    Kernel driver in use: i915
--
01:00.0 3D controller: NVIDIA Corporation GP108M [GeForce MX150] (rev a1)
    Subsystem: ASUSTeK Computer Inc. GP108M [GeForce MX150]
    Kernel driver in use: nvidia

Actual nvidia packages installed:

$ sudo apt list nvidia* | grep install
nvidia-compute-utils-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]
nvidia-dkms-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]
nvidia-driver-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato]
nvidia-kernel-common-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]
nvidia-kernel-source-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]
nvidia-prime/bionic-updates,bionic-updates,now 0.8.8.2 all [installato, automatico]
nvidia-settings/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]
nvidia-utils-440/sconosciuto,now 440.33.01-0ubuntu1 amd64 [installato, automatico]

Should I install another driver? Should it be installed in addition or as a replacement?

lurix66
  • 173

1 Answers1

3

You likely have an issue with conflicting driver packages from multiple repositories. This can be tricky if you are using CUDA.

Open a terminal like konsole and then select the desired GPU as shown below. Use nvidia for high performance or intel for increased battery life.

sudo su -
prime-select query  # show options
prime-select nvidia # select nvidia gpu
prime-select intel  # select intel gpu
reboot

One should reboot immediately after switching graphics to avoid artifacts and glitches.

Mike Mikowski
  • 31