Suspend is not deep

[Frederik Feichtmeier]

After a fresh Ubuntu 20.04 installation, the suspend is not "deep" but it is "idle".
Deep is very important, otherwise the laptop/notebook might over heat (!) if you put it into a sleeve or bag while suspended. Which happened to my notebook.

How to reproduce:

1) install Ubuntu 20.04 on a notebook/laptop
2) suspend via lid close or suspend button or gnome shell system menu
3) wake up from suspend and type
sudo journalctl | grep "PM: suspend" | tail -2
4) find the message "PM: suspend entry (s2idle)"

How to fix the issue:

1) sudo nano /etc/default/grub
2) Replace the line
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
with
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=deep"
3) recreate grub with
sudo grub-mkconfig -o /boot/grub/grub.cfg
4) reboot
5) suspend via lid close or suspend button or gnome shell system menu
6) wake up from suspend and run
sudo journalctl | grep "PM: suspend" | tail -2
7) find the message "PM: suspend entry (deep)"

This fixes your suspend and makes your laptop go into deep sleep, which greatly increases suspended battery uptime and greatly decreases the heat the notebook creates.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: grub2 (not installed)
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Jun 25 09:14:57 2020
InstallationDate: Installed on 2020-06-23 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Pianon (alberto-o)]

Same problem (and same solution, working) on my Clevo L141CU with Ubuntu 20.04

[Alberto Pianon (alberto-o)]

just one footnote, to check I used the command:

sudo journalctl -n 1000 | grep "PM: suspend" | tail -2

otherwise it takes ages to complete

[fabianbur (fabianbur)]

Same problem and same solution in my ASUS Laptop X513EQ.

Ubuntu 20.04
Kernel: 5.4 - 5.6 - 5.8 - 5.10

[Bhaskar Chawla (bhaskarchawla90)]

I have the same problem but this solution does not work for me. Suspend remains at [s2idle] even after editing the grub file.