I also have the same issue - using ubuntu 20.04. It happens usually when I have the laptop plugged in to power - maybe the turbo boost or scaling governor changes when the laptop is plugged in to my charger.
It usually happens when I am on a video call and screensharing or recording my desktop or running a game like bioshock via steam. I don't have any of the above issues when I boot into windows (first time I have had to use windows in 5 years). I have managed to reduce the problem a bit but not completely by following the enhanced thermal configuration section here: https://docs.01.org/clearlinux/latest/guides/maintenance/cpu-performance.html Enable DPTF in your bios. First run: sudo systemctl status thermald.service and note it is missing "Using generated /etc/thermald/thermal-conf.xml.auto" sudo apt install acpica-tools git clone https://github.com/intel/dptfxtract.git cd dptfxtract sudo acpidump > acpi.out acpixtract -a acpi.out sudo ./dptfxtract *.dat Run the following again to see if it worked: sudo systemctl status thermald.service You should now have "Using generated /etc/thermald/thermal-conf.xml.auto" Things left to try: On this page: https://docs.01.org/clearlinux/latest/guides/maintenance/cpu-performance.html Try buid the ThermalMonitor tool https://github.com/intel/thermal_daemon/tree/master/tools/thermal_monitor Seeing if changing the scaling governor makes a difference: cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver shows powersave while charging for me but I may have changed it with echo powersave | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor Disabling turbo boost might help but haven't tried it yet: echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873083 Title: Lenovo Yoga C940 frequently does thermal shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
