RE: stable: commit "cpuidle: menu: Avoid discarding useful information" causes regressions

From: Doug Smythies

Date: Wed Oct 15 2025 - 10:11:42 EST


On 2025.10.14 21:50 Sergey Senozhatsky wrote:
> On (25/10/14 20:41), Doug Smythies wrote:
>> What thermal limiting methods are being used? Is idle injection being used? Or CPU frequency limiting or both.
>
> How do I find out?

>From the turbostat data you do not appear to be using the TCC offset method. This line:

cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x0f690080 (105 C)

whereas on my test computer, using the TCC offset method, shows:

cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x14641422 (80 C) (100 default - 20 offset)

To check if thermal is being used do:

systemctl status thermal

Example:

doug@s19:~/idle/teo/menu2$ systemctl status thermald
○ thermald.service - Thermal Daemon Service
Loaded: loaded (/usr/lib/systemd/system/thermald.service; disabled; preset: enabled)
Active: inactive (dead)

If something else is being used, I don't know.

... Doug