Disable USB-C PD on NUC10i5(FNH) to reduce CPU load

disableUSBC-PD.sh

# 2020-11-9: Solved in recent Ubuntu updates, not needed anymore, only for historical purposes available.
#
# Script to disable USB-C PD controller with nuc10
# See: https://community.intel.com/t5/Intel-NUCs/NUC10i3-IRQ-problem/td-p/669863?profile.language=it
#      https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883511

processActive=$(pgrep -l irq/65-i2c-INT3 | wc -l)

if [ "$processActive" -gt "0" ]; then
        echo "stopping USB-C PD controller"
        sudo modprobe -r tps6598x
fi

Does that depend on what is plugged into the USB ports?!

(I had the issue (yesterday) on a NUC 10 i7 — otherwise I'd never have landed on this thread — and I ran modprobe -r tps6598x but it's really not a great solution.)

Got this issue again with latest 22.04.1 update. modprobe -r tps6598x fixes it.

• Intel NUC 10 i7
• Linux nuc10 5.15.0-47-generic #51-Ubuntu
• Nothing plugged except power & wifi.

Didn't notice it with previous kernel versions. Fan started to get louder and htop shows load 1.00 when system is idle.

Same here; it seems there was a regression in kernel 5.15.x, and confirmed on a Intel Frost Canyon NUC 10 with Core i7. In my case I'm running Debian 11 (bullseye), kernel 5.15.53-1-pve, so this is upstream in the kernel, and not Ubuntu-specific.

The behavior is the same as before: load > 1.0 due to irq/65-i2c-INT3, even when not running anything. Using modprobe -r tps6598x fixes it (temporarily).

I installed PROXMOX "5.15.74-1-pve" on my NUC10I5FNK and the first thing I noticed is that the temperatures were much higher than with the latest Ubuntu Kernel. I looked at the process and indeed removing the PD module does fix it. Then I found this solution, it would have saved me almost an hour of research. Thank you very much for posting it.