Re: Question about thinkpad_acpi

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On Thu, Mar 21, 2019 at 4:59 PM Sebastian Dörner <bastidoerner@xxxxxxxxx> wrote:
>
> I totally forgot to mention:
> There are not only warnings in journal, it simply does not work.
> /proc/acpi/ibm/fan always shows "status: disabled", level and speed are
> 0, and commands via echo do not work...

Thank you for the report. I Cc'ed this to public mailing lists and
maintainers of the driver and subsystem.

> On 21.03.19 15:53, Sebastian Dörner wrote:
> > Hi Mr. Shevchenko,
> >
> > I'm writing to you because I noticed that you were one of the most
> > active contributors to the thinkpad_acpi linux driver on github last
> > year.
> > I've got a question about this driver and would be happy if you've got
> > time for advice.
> > My problem is, that my new laptop's fan, a Thinkpad X380, is
> > annoyingly loud, even if the machine is idle.
> > So I figured to manage the fan speed with thinkfan, which uses
> > thinkpad_acpi's /proc/acpi/ibm/fan to control the fan.
> > But each time I try to cat from or echo to /proc/acpi/ibm/fan I get
> > several kernel ACPI warnings:
> > "kernel: ACPI: \_SB.PCI0.LPCB.EC.ECRD: 1 arguments were passed to a
> > non-method ACPI object (RegionField) (20170831/nsarguments-243)"
> > I tried this with the latest kernel (5.0.3) and activated fan_control
> > in the thinkpad_acpi module.
> > I guess this means that some ACPI stuff between kernel and machine
> > went wrong?! don't know much about this.
> > So my question is:
> > Is there a way I can fix this, don't know, by figuring out the correct
> > fan control registers for my machine and then patch it on my own. Or
> > am I screwed with this machine and have to wait for Lenovo to patch this?
> > You see this really bugs me :-) and I'm looking forward to your council.
> >
> > Greetings,
> > Sebastian Dörner
> >
>


-- 
With Best Regards,
Andy Shevchenko


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