Ubuntu 20.04下Alseye M120 Plus RGB CPU风扇温度显示异常求助

Hey there! Let's work through this temperature display issue with your Alseye M120 Plus together. Since your fans are adjusting speed correctly with CPU load, the system is definitely picking up temperature changes—so the problem is likely with how the fan's screen is accessing that data. Here are some troubleshooting steps to try:

• Verify system temperature readings first
  Start by confirming your Ubuntu system can see the actual CPU temperatures. First install lm-sensors if you don't have it:

  sudo apt install lm-sensors
  

  Run sudo sensors-detect and follow the prompts to detect your sensors (you can safely accept most defaults). Then run sensors in the terminal—you should see CPU core temperatures that fluctuate when you put the CPU under load (like opening a few heavy apps or running stress). If these readings are normal, the issue is isolated to the fan's screen not pulling the right data.

• Check OpenRGB's temperature source settings
  OpenRGB might be using a default or incorrect temperature source for your fan. Open the OpenRGB app, select your Alseye M120 Plus from the device list, and look for settings related to temperature display—something like Temperature Source or Sensor Input. Try switching between different available sensors (look for labels related to your CPU or motherboard, like coretemp entries) and see if the fan's screen updates to show the correct fluctuating temperature.

• Double-check hardware connections
  Some RGB fans with temperature displays require an extra cable to connect to your motherboard's fan header for temperature sensing—not just the RGB and power cables. Check if your M120 Plus has a separate temperature detection wire, and make sure it's plugged into a compatible header on your Gigabyte B460M (like CPU_FAN or SYS_FAN, not just a pure RGB header). If this cable is missing or misconnected, the fan might fall back to a default fixed temperature reading.

• Update OpenRGB to the latest version
  Ubuntu 20.04's default repository has an older version of OpenRGB, which might not have full support for your Alseye model. You can compile the latest version from source or use a trusted PPA to get an updated package. After updating, re-scan for devices in OpenRGB and test the temperature display again.

• Check for fan firmware updates
  Sometimes the issue is with the fan's own firmware. Alseye might have released a firmware update to fix temperature reading compatibility with Linux. You might need to use a Windows system temporarily to run the manufacturer's firmware tool (since most brand-specific tools are Windows-only) if an update is available.

Hope one of these steps gets your fan's temperature display working correctly! Feel free to share what you find out.

备注：内容来源于stack exchange，提问作者ubuntero