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Can't hand back to hardware control #2

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haarp opened this issue Jan 8, 2020 · 2 comments
Open

Can't hand back to hardware control #2

haarp opened this issue Jan 8, 2020 · 2 comments

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@haarp
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haarp commented Jan 8, 2020

It seems once manual control has been engaged, it's not possible to hand control back over to the hardware. Neither by writing to 2 to pwm*_enable, nor by writing level auto to /proc/acpi/ibm/fan, nor by letting the watchdog try to do it.

Must be a bug somewhere.
@civic9
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civic9 commented Jan 8, 2020 •
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Do you see any errors when writing 2 to pwm*_enable? Is 2 visible under pwm*_enable after write?

For me (X1 extreme 1st gen, EC/bios version: N2E) writing 2 to pwm*_enable works fine. Reverts to hardware control.

Btw, check if it enables full speed when writing 0 to pwm*_enable

@haarp
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haarp commented Jan 9, 2020

Full-speed works fine. I suspect something got screwed up during my experiments. Will do a reboot later and check things again.

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@haarp @civic9