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| pkgpower [2026/10/07 12:17] – created admin | pkgpower [2026/10/07 12:28] (current) – [Troubleshooting] admin |
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| ===== PkgPower ===== | ===== PkgPower ===== |
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| CPU package power-limit manager for **panther** (%%ThinkPad%% P16 Gen 5, Core Ultra 7 365, Fedora Linux + KDE Plasma 6). Created 2026-10-06. | CPU package power-limit manager originally written for my personal laptop (%%ThinkPad%% P16 Gen 5, Core Ultra 7 365, Fedora Linux + KDE Plasma 6). Created 2026-10-06. |
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| A small bash script + systemd unit + udev rule + Plasma 6 panel applet that caps CPU package power (PL1/PL2) via the kernel's native RAPL interface. Replaces the unmaintained ''undervolt'' Python utility: only its power-limit writes (''-p1''/''-p2'', MSR 0x610) ever had effect — voltage offsets are locked on 10th-gen+ Intel CPUs and silently no-op. | A small bash script + systemd unit + udev rule + Plasma 6 panel applet that caps CPU package power (PL1/PL2) via the kernel's native RAPL interface. Replaces the unmaintained ''undervolt'' Python utility: only its power-limit writes (''-p1''/''-p2'', MSR 0x610) ever had effect — voltage offsets are locked on 10th-gen+ Intel CPUs and silently no-op. |
| </code> | </code> |
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| Notes: | === Misc === |
| * ''plasmoidviewer'' console noise (DeclarativeDropArea overrides, isScreenUiReady errors, nullptr disconnect) comes from KDE's stock desktopcontainment inside the viewer, not from this applet. Judge only ''file:///home/...'' lines. | |
| | * ''plasmoidviewer'' console noise (DeclarativeDropArea overrides, isScreenUiReady errors, nullptr disconnect) comes from KDE's stock desktopcontainment inside the viewer, not from this applet. Judge only file:-home-... lines. |
| * Clicking mode buttons in the viewer is live fire (NOPASSWD sudo); the icon flips within ~3 s (poll interval). | * Clicking mode buttons in the viewer is live fire (NOPASSWD sudo); the icon flips within ~3 s (poll interval). |
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| * **udev rule silently misfires** — check the journal for SELinux denials. | * **udev rule silently misfires** — check the journal for SELinux denials. |
| * **Changing wattages** — edit the ''case'' table in the script; everything else follows. | * **Changing wattages** — edit the ''case'' table in the script; everything else follows. |
| * **Paste gremlins** — ''bash -n /usr/local/bin/pkgpower'' must stay silent; check for smart quotes or stray ``` fence lines if the script misbehaves. | |
| * Lighter-touch alternatives: ''/sys/devices/system/cpu/intel_pstate/max_perf_pct'' (frequency cap, %) and ''/sys/devices/system/cpu/intel_pstate/no_turbo'' (turbo switch). A low PL2 already tames bursty surging without killing turbo entirely. | * Lighter-touch alternatives: ''/sys/devices/system/cpu/intel_pstate/max_perf_pct'' (frequency cap, %) and ''/sys/devices/system/cpu/intel_pstate/no_turbo'' (turbo switch). A low PL2 already tames bursty surging without killing turbo entirely. |
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| ==== Related on this machine ==== | |
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| * Battery charge thresholds **50 (start) / 60 (stop)** set in KDE Power settings (EC-enforced; deliberately not TLP — powerdevil double-writer + TLP/power-profiles-daemon package conflict). Before extended unplugged use, temporarily raise stop → 100 then start → 99 (order matters — the EC only charges below the *start* threshold), restore 50/60 afterwards. | |
| * Baseline battery health 2026-10-06: 99.96% (74.97 / 75 Wh), 4 cycles (Sunwoda pack). | |
| * History: this setup replaces ''acpower.sh'' / ''fifteenwatt.sh'' / ''tenwatt.sh'' from the previous %%ZBook%% (i7-1360P) era, which wrapped ''undervolt -p1/-p2''. | |
