Show Lenovo Yoga 730 fan speed in Kubuntu

After a bunch of digging and investigation for the Super I/O chip used by the LNVNB161216 motherboard, it seems that the fan speed is neither exposed nor controllable by any operating system. The chip in question is from Nuvoton and operates independently.

for other models, you can try this:

You may need to make some changes to your /etc/default/grub, then run sensors-detect again. Try this:

1. Edit /etc/default/grub as root
   sudo vi /etc/default/grub
2. Add/Edit the GRUB_CMDLINE_LINUX value so that it reads:
   GRUB_CMDLINE_LINUX="acpi_enforce_resources=lax"
3. Save the file and close
4. Update Grub with sudo update-grub
5. Re-scan the hardware with sudo sensors-detect

The fan speed should now be visible when using applications that display this data.

Try installing this extension sudo apt install gnome-tweaks gnome-shell-extension-system-monitor after executing this command logout and login again and after that see that the app named extension is added to the show aplication list and enable system monitor in the extension app.After that a system monitor tab will be added to the top open it and select preferences and search for fan and select display it.Hope this help.