[Bug 1848771] Re: Reboot after resume from suspend (deep)

[Per-Inge]

I don't know if this is related but it fixed my problem with wake up from suspend.
This is on a desktop with an Asus Rog Strix B450-F Gaming motherboard and Focal Fossa.

I have changed these settings in BIOS
- Used DOCP settings on the memory
- USB power delivery in SoftOff is set to Disable
- PSS support is set to enable
- Serial Port is set to OFF
In AMD CBS
- IOMMU is set to Disabled
- Global C-state control is set to enable
- Power Supply Idle Control is set to Low Current Idle

I think the most important setting is to disable IOMMU. Instead I have
added "iommu=soft" in GRUB_CMDLINE_LINUX="" in /etc/default/grub

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https://bugs.launchpad.net/bugs/1848771

Title:
  Reboot after resume from suspend (deep)

Status in Release Upgrader:
  Incomplete
Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  After upgrading to Kubuntu Eoan (19.10) yesterday, my laptop crashes
  after resume from suspending. This is regardless the way of suspending
  (closing lid, selecting suspend from sddm, systemctl suspend).

  The journal shows:
  ferry at chromium:~$ journalctl -b -1 -e
  ..
  sddm[1106]: Message received from greeter: Suspend
  NetworkManager[836]: <info>  manager: sleep: sleep requested (sleeping: no  enabled: yes)
  NetworkManager[836]: <info>  device (60:73:BC:BA:B8:68): state change: disconnected -> unmanaged (reason '
  NetworkManager[836]: <info>  device (60:73:BC:23:8F:3E): state change: disconnected -> unmanaged (reason '
  NetworkManager[836]: <info>  device (p2p-dev-wlp1s0): state change: disconnected -> unmanaged (reason 'sle
  NetworkManager[836]: <info>  manager: NetworkManager state is now ASLEEP
  systemd[1]: Reached target Sleep.
  systemd[1]: Starting Suspend...
  systemd-sleep[1238]: Suspending system...
  kernel: PM: suspend entry (deep)

  On resume (keypress, open lid) resume starts but immediately crashes
  and reboots.

  The laptop is an Acer 720p Chromebook with Chromium replaced and
  working fine with Kubuntu since 5 years or so.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: ubuntu-release-upgrader-core 1:19.10.15
  ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
  Uname: Linux 5.3.0-18-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Fri Oct 18 18:45:53 2019
  InstallationDate: Installed on 2017-07-13 (826 days ago)
  InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to eoan on 2019-10-17 (0 days ago)
  VarLogDistupgradeTermlog:

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