Power Management: Difference between revisions

imported>Lelgenio
(Add workaround for systems that immediatly wakeup after beign suspended)
imported>Skylark
(Drop a redlink, add See also: Laptop which overlaps with this article)
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It is also possible, to use the <code>post-resume</code> target directly to make a service.
It is also possible to use the <code>post-resume</code> target directly to make a service.
Refer to the [[Systemd Services]] article for details about writing systemd services for NixOS.


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=== Troubleshooting ===
=== Troubleshooting ===


==== System Immediately wakes up from suspend ====
==== System immediately wakes up from suspend ====


Particularly in some gigabyte motherboards with NVMe drives, the system may immediately wake up from being suspended.
Particularly in some Gigabyte motherboards with NVMe drives, the system may immediately wake up from being suspended.
This can be worked around by disabling the wakeup triggers for the offending components:
This can be worked around by disabling the wakeup triggers for the offending components:


===== Solution 1: Disabling wakeup triggers for all PCIe devices =====
===== Solution 1: Disabling wakeup triggers for all PCIe devices =====


If you don't need your system to wakeup via PCIe components you can simply disable it for all without needing to search for what component is causing problems.
If you don't need your system to wakeup via PCIe components you can simply disable it for all without needing to determine which component is causing problems.


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===== Solution 2: Disabling a common NVMe interface =====
===== Solution 2: Disable a common NVMe interface =====


Specifically on Gigabyte motherboards you can try targetting only the NVMe ports.
Specifically on Gigabyte motherboards you can try targetting only the NVMe ports.
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===== Solution 3: Disabling a single device's wakeup triggers =====
===== Solution 3: Disable a single device's wakeup triggers =====
If you wish to be more granular in what components should no longer be able to wakeup your system you can manually search what component is causing the wakeup events.
If you wish to be more granular in what components should no longer be able to wakeup your system, you can find out which component is causing the wakeup events.


First, list all components and their current wakeup status:
First, list all components and their current wakeup status:
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You can temporarily toggle a device by sending it's "Device" collumn back into `/proc/acpi/wakeup`
You can temporarily toggle a device by writing its "Device" name back into <code>/proc/acpi/wakeup</code>


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And finally use those values in a udev rule:
And finally use those values in a <code>udev</code> rule:
   
   
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== See also ==
* [[Laptop]]


== External resources ==
== External resources ==


* {{manual:nixos|sec=#sec-rebooting|chapter=Chapter 23. Rebooting and Shutting Down}}
* {{manual:nixos|sec=#sec-rebooting|chapter=Chapter 23. Rebooting and Shutting Down}}