Unclear what changed but I haven't been able to reproduce this issue in
a week or so. My computer is now running:

    5.11.0-18-generic

When I reported the bug it was using:

    5.11.0-17-generic

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https://bugs.launchpad.net/bugs/1929870

Title:
  AMD desktop often fails to resume from deep suspend

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Machine setup:

  Desktop PC
  Ubuntu 21.04
  Linux version 5.11.0-17-generic
  AMD Ryzen 3900X
  Asus X590 PRIME PRO motherboard
  NVIDIA P400 GPU

  Approximately one in every 4 attempts to resume from a deep suspend
  fails. When the issue occurs the fans spin up but the monitor displays
  no output and input devices do not function, the system appears frozen
  and must be restarted using power or reset buttons.

  I have tried using different dNVIDIA isplay drivers (proprietary as
  well as open source) as well as trying an AMD Radeon HD 6450 GPU
  instead of the NVIDIA GPU.

  I have tried the following kernel parameters: processor.max_cstate=1
  rcu_nocbs=0-23

  I have updated the BIOS several times.

  I had similar problems with Ubuntu 20.10.

  I have enabled some additional kernel logging with initcall_debug.

  Fairly consistently the last message printed in the kernel log is from
  the ethernet driver:

  May 27 09:19:43 jacob-tm kernel: [  230.878348] OOM killer enabled.
  May 27 09:19:43 jacob-tm kernel: [  230.878349] Restarting tasks ... 
  May 27 09:19:43 jacob-tm kernel: [  230.879023] usb 5-2.3: USB disconnect, 
device number 4
  May 27 09:19:43 jacob-tm kernel: [  230.879026] usb 5-2.3.1: USB disconnect, 
device number 5
  May 27 09:19:43 jacob-tm kernel: [  230.879285] done.
  May 27 09:19:43 jacob-tm kernel: [  230.879318] PM: suspend exit
  May 27 09:19:43 jacob-tm kernel: [  230.880916] rfkill: input handler enabled
  May 27 09:19:43 jacob-tm kernel: [  230.955727] kauditd_printk_skb: 1 
callbacks suppressed
  May 27 09:19:43 jacob-tm kernel: [  230.955731] audit: type=1400 
audit(1622132383.424:64): apparmor="DENIED" operation="capab
  le" profile="/usr/sbin/cupsd" pid=4418 comm="cupsd" capability=12  
capname="net_admin"
  May 27 09:19:43 jacob-tm kernel: [  230.966192] audit: type=1400 
audit(1622132383.432:65): apparmor="DENIED" operation="capab
  le" profile="/usr/sbin/cups-browsed" pid=4429 comm="cups-browsed" 
capability=23  capname="sys_nice"
  May 27 09:19:43 jacob-tm kernel: [  231.120385] rfkill: input handler disabled
  May 27 09:19:43 jacob-tm kernel: [  231.225924] usb 5-2.3.2: USB disconnect, 
device number 6
  May 27 09:19:43 jacob-tm kernel: [  231.481893] usb 5-2.3.5: USB disconnect, 
device number 7
  May 27 09:19:47 jacob-tm kernel: [  235.009576] igb 0000:05:00.0 enp5s0: igb: 
enp5s0 NIC Link is Up 1000 Mbps Full Duplex, Fl
  ow Control: RX/TX
  May 27 09:19:47 jacob-tm kernel: [  235.009913] IPv6: 
ADDRCONF(NETDEV_CHANGE): enp5s0: link becomes ready

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: linux-image-5.11.0-17-generic 5.11.0-17.18
  ProcVersionSignature: Ubuntu 5.11.0-17.18-generic 5.11.12
  Uname: Linux 5.11.0-17-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu65.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jacob      2024 F.... pulseaudio
   /dev/snd/controlC0:  jacob      2024 F.... pulseaudio
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Thu May 27 14:12:33 2021
  InstallationDate: Installed on 2020-10-28 (211 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  IwConfig:
   lo        no wireless extensions.
   
   enp5s0    no wireless extensions.
   
   docker0   no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-17-generic 
root=UUID=f721d5df-ceec-434a-919a-0680ee380996 ro quiet splash initcall_debug 
processor.max_cstate=1 rcu_nocbs=0-23 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.11.0-17-generic N/A
   linux-backports-modules-5.11.0-17-generic  N/A
   linux-firmware                             1.197
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: Upgraded to hirsute on 2021-05-14 (13 days ago)
  dmi.bios.date: 05/08/2021
  dmi.bios.release: 5.17
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3604
  dmi.board.asset.tag: Default string
  dmi.board.name: PRIME X570-PRO
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr3604:bd05/08/2021:br5.17:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX570-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.sku: SKU
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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