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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVCF] PWM fan speed too high"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80901#c46">Comment # 46</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVCF] PWM fan speed too high"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80901">bug 80901</a>
from <span class="vcard"><a class="email" href="mailto:kpschrage@gmx.de" title="K.-P. Schrage <kpschrage@gmx.de>"> <span class="fn">K.-P. Schrage</span></a>
</span></b>
<pre>(In reply to poma from <a href="show_bug.cgi?id=80901#c45">comment #45</a>)
<span class="quote">> 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</span >
After reboot:
[root@linux_keller kp]# systemctl status gpu-fan.service
● gpu-fan.service - GPU fan lower speed
Loaded: loaded (/etc/systemd/system/gpu-fan.service; enabled)
Active: inactive (dead) since Sa 2015-03-14 11:40:03 CET; 33s ago
Process: 683 ExecStart=/usr/local/bin/nvapoke e118 80000002 (code=exited,
status=0/SUCCESS)
Process: 672 ExecStart=/bin/sh -c /bin/echo 1 >
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon1/pwm1_enable
(code=exited, status=0/SUCCESS)
Main PID: 683 (code=exited, status=0/SUCCESS)
Mär 14 11:40:03 linux_keller systemd[1]: Starting GPU fan lower speed...
Mär 14 11:40:03 linux_keller systemd[1]: Started GPU fan lower speed.
---------------
BUT: Fan speed is high, register e118 shows value 000000d8, not 00000002, as
expected. I have to restart the service manually to calm down the fan.
Let me be honest, poma: I am very grateful for all your help, but I think I'll
stick to the old-school method rc.local which seems to be rather
straightforward to me (although even that is now governed by systemd and not so
old-school anymore).</pre>
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