On Wed, Nov 11, 2026 at 6:03 PM Angela Arch Linux <[email protected]> wrote:
> Dear Didier, > > I am most grateful for the empirical evidence you have provided from your > notebook. It aligns perfectly with my initial hypothesis: the amd_pstate > driver is indeed compiled directly into the kernel (=y), rather than > existing as a loadable module. > > Timothy, this concludes the matter. Your kernel unquestionably possesses > the capability; however, the hardware detection appears to be disabled by > default. I would kindly suggest reviewing /sys/class/power_supply/BAT0/, > verifying your BIOS configurations, and perusing the official kernel > documentation provided by Didier. > > As for the remainder of this correspondence, I believe the technical truth > has been sufficiently established. > I checked the BIOS settings and there are none. I did however find this: sudo dmesg | grep -i acpi_cpufreq [ 7.688488] acpi_cpufreq: overriding BIOS provided _PSD data > Kind regards, > Angela Arch Linux > > > ---- 回复的原邮件 ---- > 发件人 Timothy M Butterworth<[email protected]> > <[email protected]> > 日期 2026年11月12日 06:54 > 收件人 didier gaumet<[email protected]> <[email protected]> > 抄送至 [email protected] > 主题 Re: Power Profiles not supported > > > On Wed, Nov 11, 2026 at 4:29 PM didier gaumet <[email protected]> > wrote: > >> Le 11/11/2026 à 12:48, Timothy M Butterworth a écrit : >> [...] >> > 2. More importantly, the AI's theoretical explanation completely >> > ignores your own empirical evidence: `modinfo: ERROR: Module >> > amd_pstate not found.` >> > >> > >> > You are correct that the module still does not show up. I emailed the >> > kernel distribution list about it. I solved the hardware issues now I >> > just need kernel modules. I may compile from source just to see if it >> works.[...] >> >> this feature is not compiled as a module but directly in-kernel: >> >> didier@hp-notebook14:~$ grep -i pstate /boot/config-6.12.116+deb13-amd64 >> CONFIG_X86_INTEL_PSTATE=y >> CONFIG_X86_AMD_PSTATE=y >> CONFIG_X86_AMD_PSTATE_DEFAULT_MODE=3 >> # CONFIG_X86_AMD_PSTATE_UT is not set >> >> This on Trixie by I am confident it's the same on ulterior versions of >> Debian >> > > Sids 7.3.3 kernel looks to have it as well. > > sudo grep -i pstate /boot/config-7.3.3+deb14-amd64 > CONFIG_X86_INTEL_PSTATE=y > CONFIG_X86_AMD_PSTATE=y > CONFIG_X86_AMD_PSTATE_DEFAULT_MODE=3 > # CONFIG_X86_AMD_PSTATE_UT is not set > > For more information about AMD pstates there is a dedicated page on the >> linux kernel documentation website: >> https://www.kernel.org/doc/html/latest/admin-guide/pm/amd-pstate.html >> >> > > -- > ⢀⣴⠾⠻⢶⣦⠀ > ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system > ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ > ⠈⠳⣄⠀⠀ > -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ ⠈⠳⣄⠀⠀
