pongsn/legion-gpu-mode-switcher
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Add active GPU indicator and dGPU process viewer in hybrid mode

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In hybrid mode, the tray icon chip body now fills red (iGPU active) or
green (dGPU active) based on whether any process has /dev/nvidia0 open,
polled every 5s. Uses fuser instead of runtime_status because
nvidia-drm.modeset=1 keeps the PCI device active regardless of user-space
usage. Also adds a "Show dGPU processes" menu item (nvidia-smi, hybrid
mode only).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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pongsn 2026-06-29 14:11:12 -05:00
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commit b03f0a182d
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README.md
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@ -4,11 +4,13 @@ A lightweight KDE system tray application for switching GPU modes on Lenovo Legi
## Features
- Shows current GPU mode in the system tray (chip icon: red/green split for Hybrid, solid green for NVIDIA only)
- Shows current GPU mode in the system tray (chip icon: red/green split outline for Hybrid, solid green for NVIDIA only)
- **In Hybrid mode**, the chip body fills red (iGPU active) or green (dGPU active) to show which GPU is currently doing work — updates every 5 seconds via `/dev/nvidia0` usage detection
- Switch between **Hybrid** (AMD iGPU drives internal display, NVIDIA exposes HDMI) and **NVIDIA only** (dGPU drives everything) with one click
- No password prompt for the active desktop session (polkit `allow_active: yes`)
- Tracks pending mode switches before reboot — shows an orange badge on the icon and allows cancelling the switch
- Triggers a reboot prompt after switching; also offers "Reboot now" from the tray menu
- **In Hybrid mode**, shows a "Show dGPU processes" menu item listing which processes are currently using the dGPU (via `nvidia-smi`)
- Installs itself as a KDE autostart entry
## Compatibility