POWER CONTROL(9)

💅 Power control(9) 💅

okay bestie, you're in the Kernel API Manual and this page is short but highkey essential ✨

gmux is able to cut power to the discrete GPU. It automatically takes care of the correct sequence to tear down and bring up the power rails for core voltage, VRAM and PCIe. literally the whole power-rail choreography, handled 😌🔥

✨ SEE ALSO ✨

• Kernel file ./drivers/platform/x86/apple-gmux.c Overview(9) 🫶
• Backlight control(9) 🌈
• Graphics mux(9) 🎀
• Interrupt(9) ⚡
• Debugfs Interface(9) 🦋

no cap, that's the whole page — short, sweet, and fully slaying 💖

mwah 💋 — source/version ./drivers/platform/x86, date October 2026, signing off from the Power control(9) corner of the Kernel API Manual group chat 🌸