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简单点说就是通过设置 /sys/class/drm/card0/device/hwmon/hwmon0 下面的pwm1_enable 来确定是否启动自动控制 1为手动 2为自动,然后设置pwm1来控制速度百分比值从(0~255)255为100%

AMDGPU sysfs fan control

AMDGPU kernel driver offers fan control for graphics cards via hwmon in sysfs.

Configuration of manual control

To switch to manual fan control from automatic, run

echo “1” > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1_enable

Set up fan speed to e.g. 50% (100% are 255 PWM cycles, thus calculate desired fan speed percentage by multiplying its value by 2.55):

echo “128” > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1

To reset to automatic fan control, run

echo “2” > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1_enable

Warning: Resetting fan speed to auto may not work due to a driver bug and instead a restart of the driver may be required as a workaround.

本文标签: 风扇显卡速度版本amd