[Nouveau] [Bug 80901] [NVCF] PWM fan speed too high

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80901

--- Comment #45 from poma <pomidorabelisima at gmail.com> ---
(In reply to K.-P. Schrage from comment #44)

> Now my 10-...rules file in /etc/udev/rules.d/ looks like this:
> RUN+="/bin/sh -c '/bin/echo 1 >
> /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon1/pwm1_enable'",
> RUN+="/usr/local/bin/nvapoke e118 80000002"
> 
> During boot, it sounds as if it gets triggered several times
> (noise-silence-noise-silence), but it ends up with a silent gpu fan when the
> graphical desktop has started.
> Startup logs are flooded with messages like:
> 
> nvapoke:473 conflicting memory types e8000000-f0000000
> uncached-minus<->write-combining
> reserve_memtype failed [mem 0xe8000000-0xefffffff], track uncached-minus,
> req uncached-minus


# rm /etc/udev/rules.d/10-gpu-fan.rules

And try this:
/etc/systemd/system/gpu-fan.service 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Unit]
Description=GPU fan lower speed

[Service]
Type=oneshot
ExecStart=/bin/sh -c '/bin/echo 1 >
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon1/pwm1_enable'
ExecStart=/usr/local/bin/nvapoke e118 80000002
StandardOutput=null
StandardError=null

[Install]
WantedBy=basic.target
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# systemctl enable gpu-fan.service
# systemctl start gpu-fan.service
# systemctl status gpu-fan.service

If everything is OK:
# systemctl reboot
...

BOOT
...
# systemctl status gpu-fan.service

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