Arch Linux

mrandy

Member

Registered: 2022-04-17

Posts: 1

Intel CPU unable to hit pstates after first sleep

I'm having an odd issue where my CPU is correctly using pstates during idle and first suspend. However, after first suspend, the CPU no longer enters pstates.

Reproduction

- Clone this repo
- Run `sudo ./s0ix-selftest-tool.sh -s on`
- Wait for completion
- Again, run `sudo ./s0ix-selftest-tool.sh -s on`

Expected result
Use of pstates is consistent across runs.

Actual result
After first sleep, CPU doesn't will no longer hit pstates.

First run

Second run (after sleep)

Additional info

I've followed some of the troubleshooting steps here but haven't gone as far as to rebuild the kernel with debuging enabled.

Hardware/software info

                   -`                    andy@andys-laptop
                  .o+`                   -----------------
                 `ooo/                   OS: Arch Linux x86_64
                `+oooo:                  Host: XPS 15 9500
               `+oooooo:                 Kernel: 5.17.3-arch1-1
               -+oooooo+:                Uptime: 2 days, 18 hours, 5 mins
             `/:-:++oooo+:               Packages: 1310 (pacman), 56 (flatpak)
            `/++++/+++++++:              Shell: zsh 5.8.1
           `/++++++++++++++:             Resolution: 1920x1200
          `/+++ooooooooooooo/`           DE: GNOME 42.0
         ./ooosssso++osssssso+`          WM: Mutter
        .oossssso-````/ossssss+`         WM Theme: Adwaita-dark
       -osssssso.      :ssssssso.        Theme: Adwaita-dark [GTK2/3]
      :osssssss/        osssso+++.       Icons: Adwaita [GTK2/3]
     /ossssssss/        +ssssooo/-       Terminal: tmux
   `/ossssso+/:-        -:/+osssso+-     CPU: Intel i5-10300H (8) @ 4.500GHz
  `+sso+:-`                 `.-/+oso:    GPU: Intel CometLake-H GT2 [UHD Graphics]
 `++:.                           `-/+/   Memory: 3872MiB / 31851MiB
 .`                                 `/