On Sat, Aug 25, 2018 at 3:41 AM Rick Thomas <[email protected]> wrote:
>
>
> I just loaded the latest Debian-ports powerpc64 installer on a PowerMac 
> dual-core G5 that I had lying around.
>
> It installed kernel 4.16.0-1-powerpc64 from the CD.  After the install 
> finished, I did an update/upgrade and that installed kernel 
> 4.17.0-3-powerpc64.
>
> A few minutes after rebooting with the new kernel the “wind tunnel” fans 
> started up.  I then rebooted with the old (4.16) kernel.  The fans did not 
> start up.
>
> Back in the old days of Linux kernel 3.x, the fix for wind tunnel fans was to 
> load the “i2c_powermac" kernel module.  Nowadays, that module is built-in so 
> it isn’t necessary (or even possible) to manually load it.  I checked the 
> config files, and it is still built-in on both the 4.16 and the 4.17 kernels.
>
> Anybody know what changed and what can be done about it?

Is this the same:

https://bugzilla.kernel.org/show_bug.cgi?id=199471

[Credit: Wolfram]

> Thanks! for any help you can give,
> Rick

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