Ticket #1453 (closed task)

Opened 10 years ago

W83697HF / BIOS no longer controls fan speed (Examined/Solved - 2.8.0 with pwm fix in CVS (tag 1.105), kernel: SuSE 2.4.21-144 recompiled)

Reported by: contact Owned by: somebody
Priority: minor Milestone:
Component: hardware Version:
Keywords: Cc:


When not using lm-sensors; the BIOS controls fan speed based on load, and seems

to do a good job of it, generally this is a very quiet machine.

After loading w83781d and i2c-isa, the fans spin at full speed.

I patched my lm-sensors up to version 1.105 of w83781d, containing a pwm fix.

This allows me to manually adjust the fan speed (previously not possible),

although only "8 1" and "4 1" really seem to have any effect when echo'ed to


What I'd like to know is if I can monitor speed and temperature without

disrupting the BIOS' control over fan speeds? Or is the only way some


Hardware : MSI Hermes 650-P, monitoring chip W83697HF. --- You can use modprobe w83781d init=0 which will disable initialization

of the chip.

Or use CVS/2.8.2 which has the initialization removed.

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