Arch Linux

enes4949

Member

Registered: 2020-04-15

Posts: 4

Suspend to RAM doesn’t work

When I try to suspend my PC to RAM screen goes black but PC stays on. I can hear fans running and the power LED is still on. How can I fix this? I am using vanilla 5.4 kernel. My file system is btrfs. And swap is not enabled. I tried s2ram module from AUR.

Ropid

Member

Registered: 2015-03-09

Posts: 1,069

Re: Suspend to RAM doesn’t work

Do you see something interesting in "journalctl -b-1 -e" after you reset the PC afterwards? About the "-b-1" argument for journalctl, you can find the numbers in "journalctl --list-boots -e".

If there's no interesting log messages when it hangs, I never found out how to diagnose those kinds of problems where things just freeze without logging anything. I then just randomly tried different kernel versions to see if one works.

While you search with Google for people discussing suspend problems, try adding different hardware details to your search terms. Someone with similar hardware might have found a tweak you can do for certain kernel module parameters, or certain kernel command line parameters, or a certain BIOS setting. The goal in your searching is to add details that makes you find tweaks that apply to your system. Like for example, imagine if the solution is some BIOS setting, then you will maybe find that kind of post if you add details about the CPU architecture or motherboard or chipset name to your search terms.

Last edited by Ropid (2020-04-15 20:56:39)

ugjka

Member

From: Latvia

Registered: 2014-04-01

Posts: 1,957

Website

Re: Suspend to RAM doesn’t work

https://01.org/node/3721

---

https://ugjka.net