GPU usage reports NaN for glxinfo output

[psukys]

The used/total is shown correctly, whereas the usage percentage is reported as NaN (see screenshot for example).

[farhadinima75]

hi @psukys
for showing fan speed in panel, what did you do ?

I've already installed lm-sensors but fan speed and thermal doesn't work and show NaN....

Second problem: after today update, my Disk is showing NaN like your problem.

my OS : Ubuntu 18.04

[happysmack]

I had the snap version for ubuntu installed and most worked. I do not like snaps so I removed and put the repo version back like I always had before. Now the GPU ( Nvidia ) just shows a value for memory. I have the NAN% for the other GPU setting, disk activity, thermal, and fan. I have lm-sensors and the files listed in the readme installed. I know at least the disk activity did work when I first installed 18.04.

[RolandAckerl]

I had the same issue as psukys, Ubuntu 20.04, CUDA 10.2, Nvidia-smi 440.64, untamed potato-power of gtx 960M ;)

Just to make it clear: afaik only Nvidia GPUs are supported.
Check if their drivers are loaded properly (easy way in terminal: nvidia-smi).
If, like in my case, you are running your system on Intel's built-in GPU but other stuff with Nvidia (for e.g. CUDA or similar), run nvidia-settings, pick PRIME Profiles menu in the window and enable NVIDIA On-Demand. Like:

Then reboot.

worked for me (GPU not in use here):

running a small neural net (MNIST-training):