1.0.3

CPU Power Manager — v1.0.3 Release Notes

Released: 2026-04-20

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What's New

Dashboard & Monitoring

• System Overview redesign — 4-column homogeneous grid ensures metric cards never overlap; text
  no longer spills into adjacent cells
• Intel RAPL power draw — live watts reading via two-sample energy delta from
  /sys/class/powercap/intel-rapl
• Battery status card — charge %, AC/battery detection, live power draw, and charge status
  string
• Fan speed — live RPM from hwmon drivers displayed alongside CPU info
• Per-core temperatures — reads coretemp hwmon labels (Core 0, Core 1 …) and displays next to
  each core row
• Per-core CPU usage bars — LevelBar widget per core updated every second
• P-core / E-core labels — Intel 12th gen+ hybrid CPUs now correctly label [P] and [E] cores

Control

• Frequency sliders — min/max Scale widgets in the Control tab with a single Apply button
• AC / Battery auto-profile switching — detects power source change every second and applies the
  configured profile automatically

Settings

• Display Size — Small / Normal / Large / X-Large dropdown; scales the entire UI instantly,
  persisted across restarts
• Launch at Login — writes/removes ~/.config/autostart/cpu-power-manager.desktop
• Minimize to Tray on Close — hides window instead of quitting
• Auto-Apply Profile on Startup — restores last used profile on launch
• Critical Temperature Notification — desktop notification toggle with configurable °C threshold
• Custom profile creation — name, governor, and turbo setting saved to config; persists across
  restarts

System Tray

• StatusNotifierItem tray icon via pure-Rust zbus — no libdbus-1-dev C headers required
• Show/Hide Window and Quit menu entries
• Fails gracefully when no DBus session bus is present

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UI & Design

• Full Dracula colour palette — all backgrounds, text, accents, status colours, graph,
  scrollbars, and buttons now use canonical Dracula colours (#282a36, #bd93f9, #50fa7b, #f1fa8c,
  #ff5555, #8be9fd, etc.)
• macOS-style circular traffic-light buttons — replaced GTK Button widgets (which cannot be
  forced circular via CSS) with Cairo-drawn DrawingArea dots; red/yellow/green 13 px circles with
  hover dimming
• CPU usage graph recoloured to Dracula purple (#bd93f9) fill and line
• App icon — lightning bolt SVG registered in the icon theme at runtime; no system installation
  required for the icon to appear
• About dialog — logo loads from embedded SVG bytes (always visible); website updated to
  www.jegly.xyz

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Bug Fixes

• "Expected a valid color" CSS parse error — removed unsupported box-shadow: inset from
  drawingarea block
• "Failed to read available governors" — governor lookup now falls back to cpu0, then to a
  hardcoded Intel pstate list, instead of bailing on first failure
• "Failed to reset min frequency for core N" — E-core frequency writes are now soft errors
  (debug log only); profile apply no longer aborts on hybrid CPUs
• Per-core panel empty — get_core_status() uses unwrap_or for all sysfs reads;
  get_all_core_status() uses filter_map so one failing core doesn't block the rest
• Fan Speed / CPU Info overlap — fan speed card (grid index 7) was being placed at the same cell
  as the CPU info card; fixed by folding fan speed into the CPU info card

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Configuration

New fields in ~/.config/cpu-power-manager/config.toml:

[general]
minimize_to_tray = false
auto_apply_on_startup = false
last_profile = ""
critical_temp_notify = true
ui_scale = "normal" # small | normal | large | xlarge

Existing configs are forward-compatible — all new fields have defaults and are optional.

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Known Limitations

• E-core frequencies display as 0 MHz on Intel 12th gen+ — expected behaviour; E-cores share a
  policy group and don't expose individual scaling_cur_freq files
• System tray requires sudo -E (not plain sudo) to preserve DBUS_SESSION_BUS_ADDRESS

1.0.0-2

Updated UI / small backend changes

Beta Release

beta release - more features coming/UI Tweaks