Unisoc Ums9117 Driver Hot 'link' May 2026

I’ve noticed that the device is exhibiting classic signs of overheating, specifically when the modem is under load (heavy data usage or weak signal areas). I ran some diagnostics, and the CPU temperature spikes rapidly, pushing the thermal zone limits. It seems the driver or firmware configuration for the power management is a bit too aggressive, or simply unoptimized, causing the "hot driver" state where the modem refuses to downclock even when idle.

Unlike standard frequency scaling (DVFS), which merely slows down a core, hotplugging physically (logically) gates the clock and power to a CPU core, effectively turning it off. unisoc ums9117 driver hot