Public bug reported:

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)

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

** Description changed:

  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 overheight if you 
put it into a sleeve or bag while suspended. Which happening to my notebook. 
+ Deep is very important, otherwise the laptop/notebook might over heat (!) if 
you put it into a sleeve or bag while suspended. Which happening 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 
+ with
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=deep"
- 3) recreate grub with 
+ 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 
+ 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
+  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)

** Description changed:

  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 happening to my notebook.
+ 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)

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https://bugs.launchpad.net/bugs/1885085

Title:
  Suspend is not deep

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