How can I make the fan in my computer turn off when it's suspended? [closed]

When my computer is suspended, the GPU, CPU and power supply fans all continue to run.

I don't think I've ever been able to get them to turn off, short of hibernating or turning the computer off. I have some theories as to where to begin, but what I'd like are some more solid ideas.

I built this computer myself, so I think it's possible that I didn't connect the fans to a proper power supply, so one theory is that I need to open the computer, and move the fan's wire somewhere else on the motherboard. If this is correct, is there a way to know where to move it? <-- This theory doesn't make sense now that I realize it's three different fans that keep running.

My other theory is that I need to do something in my BIOS to make this change, and my third theory is that this is an Ubuntu thing that I need to fix on the software side.

Does anybody know how to figure out why the fans never turn off, or what to do to fix them? They DO turn off when the computer is hibernating, but I don't like doing that because it takes a very long time to boot up from hibernation.

Solution 1:

I had the same problem, and solved it by going to BIOS into "Power Management Setup" set "ACPI Suspend Type" to "S3 (STR)".

STR stands for "Suspend to RAM", screenshot and more in here

Solution 2:

This may depend on how old your computer is. I believe that this must be a supported mode in newer BIOSes (I believe that you may want to search for "S3 Standby" somewhere in your BIOS options).