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I yust installed Ubuntu 20.04 on my Surface Laptop 1 and I have Thermal Throttling issues.

I tried everything from using the tee command:

echo 65 | sudo tee /sys/devices/system/cpu/intel_pstate/max_perf_pct

To using this fix: https://github.com/linux-surface/linux-surface/wiki/Surface-Laptop 1

But noting seems to work for me

My specs are:

Core i5-7200U

8Gb of ram

Intel HD 620 Graphics

Doug Smythies
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Diego Mannheimer
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    Are you sure it is thermal throttling and not some other throttling such as power limits? Try limiting "max_perf_pct" even more. Try disabling turbo. If your CPU frequencies are stuck low, there might be some other reason. If I ever use thermald, I prefer a very simple config file, such as this – Doug Smythies Oct 17 '21 at 20:37
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    I prefer to use turbostat (linux-tools-common package) to monitor power, temp, CPU frequency. Such as: sudo turbostat --Summary --quiet --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,RAMWatt,GFXWatt --interval 6 – Doug Smythies Oct 17 '21 at 20:51
  • How can I exacly disable Turbo boost. Vesides Thermald dosent seem to use the scrips that I provided under /etc/thermald/thermal-conf.xml for some reason – Diego Mannheimer Oct 18 '21 at 01:58
  • Also thank you for your help – Diego Mannheimer Oct 18 '21 at 02:26
  • see here for disabling turbostat after boot. You might find you need to disable it before boot, in BIOS, at least as a test. Is the thermald service running on your computer? sudo systemctl status thermald – Doug Smythies Oct 18 '21 at 14:18
  • Yes the service is indeed running, and no, I cannot disable Turbo boost from bios on this Laptop: Active: active (running) since Mon 2021-10-18 07:43:01 EST; 3h 30min ago – Diego Mannheimer Oct 18 '21 at 16:17
  • It has been a long time since I have used thermald. I revived my old work on my test 20.04 Ubuntu server and it is working just as it did before. It is a rather terrible temperature servo, but that can dealt with later, if you can get functional with it. – Doug Smythies Oct 18 '21 at 23:48
  • Unfortunatly, I had to switch to Windows because of how unusable it was, I've never encountered a Computer like this. Anyway thanks for the help. – Diego Mannheimer Oct 19 '21 at 03:16

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Not an surface user, but I was affected by this:

https://phoronix.com/scan.php?page=news_item&px=Platform-Profiles-Axboe https://www.phoronix.com/scan.php?page=news_item&px=Linux-ACPI-Platform-Profile

If you are using a linux kernel >= 5.1 check if modifying /sys/firmware/acpi/platform_profile solves your problem

note: there is /sys/firmware/acpi/platform_profile_choices showing possible values

Andres Bott
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