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Old 13th April 2012, 09:50 PM
GNowakowski Offline
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Join Date: Mar 2011
Posts: 18
F16 GPU Power Profile in Systemd?


I've done some study to try and set my laptops GPU to a lower power setting.. I can set the profile from the terminal rather easily:

echo low > /sys/class/drm/card0/device/power_profile
and can dynamically (for demanding times) power it by:
echo dynpm > /sys/class/drm/card0/device/power_method
and I can use nano to view the power_profile (its changed from default to low). Thats a small victory. The next step is I'd like to have my power profile set to low without having to change it each time myself. I thought maybe I could accomplish this by adding the above code to rc.local
echo low > /sys/class/drm/card0/device/power_profile
echo dynpm > /sys/class/drm/card0/device/power_method
Not quite done yet... I make it executable and restart the service to verify its acceptable to systemd
# chmod a+x /etc/rc.d/rc.local
# systemctl restart rc-local.service
# systemctl status rc-local.service
rc-local.service - /etc/rc.d/rc.local Compatibility
	  Loaded: loaded (/lib/systemd/system/rc-local.service; static)
	  Active: active (exited) since Fri, 13 Apr 2012 14:42:39 -0600; 3s ago
	 Process: 2285 ExecStart=/etc/rc.d/rc.local start (code=exited, status=0/SUCCESS)
	  CGroup: name=systemd:/system/rc-local.service
Now this makes me happy as far as keeping my GPU running on the lower power profile. However I'd like to know the next step - that is initializing this power profile without having to depend on the rc.local compatability..
Can anyone help me (or point me in the right direction) to do this using systemd?

Last edited by GNowakowski; 13th April 2012 at 09:52 PM.
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Old 19th April 2012, 02:56 AM
GNowakowski Offline
Registered User
Join Date: Mar 2011
Posts: 18
Re: F16 GPU Power Profile in Systemd?

Does anyone know a different place to find answers for this? Developers mailing list maybe?
...I'm not sure what to study or where to go.. any help is helpful
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Old 19th April 2012, 03:23 AM
sonoran Offline
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Join Date: May 2005
Location: Sonoran Desert
Posts: 2,421
Re: F16 GPU Power Profile in Systemd?

Perhaps the users mailing list: https://admin.fedoraproject.org/mailman/listinfo
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f16, gpu, power, profile, systemd

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