Setting a value for fan speed doesn't fix the value. After 20 seconds the fan comes back to it initial speed, making i8kfan useless. Also i8kmon suffer from the same issue. A debian bug comment seems to workaround the problem but it is harder to make on RHEL https://bugs.launchpad.net/i8kutils/+bug/410596/comments/5 How reproducible: Steps to Reproduce: 1. Setup i8kutils 2. Configure module and startup 3. Lunch i8kmon to monitore changes Actual results: Seems like smm program sets the value back. But the main problem is i8k doesn't see the change anymore - even after the fan speed reset to 2 by smm, i8kmon still see the fan speed at the value it sets (1). Expected results: i8kmon should detect smm speed change or/else took place over smm action. Additional info: I'm on a Dell Inspiron N4030 and bios do not have any configuration. Also I haven't found a way to configure smm in fedora.
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The problem continue. How to block BIOS smm from changing fan speed? I'm running a script daemon to verify the temperature but it keeps fighting with the smm.
I have fixed the problem following the instructions on this comment https://bugs.launchpad.net/i8kutils/+bug/410596/comments/5 Download the i8kutils source and compile the smm tool to disable the interference of BIOS. A good approach would be to have this as default when using i8kmon - but appears it is no longer maintained.