Ok, now I am going to look really stupid now, but last night after
reporting the issue here I got a Lenovo BIOS/UEFI firmware update
notification for the laptop (was on 0.1.7 asking me to upgrade to
0.1.8).

I upgraded and retested. I retested it today for the duration of the day
just to be sure and I can confirm that there is no longer an issue with
firmware 0.1.8 thus far.

I know it looks silly, but I had seriously tested it, before there was
an update, to make sure I do not open a rubbish report here; there was
100% an issue with suspend on 0.1.7 specifically on the Ubuntu
installation. I will attach system logs as requested anyway, just in
case there is something there that is of value.

Sorry for wasting your time if this proves to be a dud.


** Tags added: apport-collected wayland-session

** Description changed:

  I am running a new installation of Ubuntu noble 24.04 x86_64 (kernel
  6.8.0-45-generic) on a brand new Thinkpad T14 Gen 5 (AMD Ryzen 7 PRO
  8840U w/ Radeon 780M Graphics (16) @ 6.08 GHz)
  
  The machine does not suspend properly, which I noticed after returning
  from work with it in my backpack, taking it out and it was hot.
  
  While suspended the screen is in fact off, and the relevant LEDs enter a
  "breath" mode, indicating a suspended state, but there is an audible
  mechanical "tick" sound coming from the bottom, where I suppose the fan
  is located, and the laptop produces heat (gets hot if it's in a closed
  environment like my backpack)
  
  At first I thought it was a "lid closed" issue, but after further
  experimentation turns out that it's not a lid issue, but rather a
  suspension issue; suspending from the power button has the same result
  
  I could not reproduce this behaviour on Windows (I am dual booting,
  Windows Fastboot is off btw); suspending works properly; tested it, no
  "tick" sound, no heat.
  
  P.S. for what it's worth, my Thinkpad x13 Gen 1 on ubuntu 22, same
  kernel version on AMD Ryzen Pro 7 4750U, has no issues with suspend.
  
  Attaching system specs below. Please let me know what other info I need
  to provide
  
  Thanks.
+ --- 
+ ProblemType: Bug
+ ApportVersion: 2.28.1-0ubuntu3.1
+ Architecture: amd64
+ CRDA: N/A
+ CasperMD5CheckResult: pass
+ CurrentDesktop: ubuntu:GNOME
+ DistroRelease: Ubuntu 24.04
+ InstallationDate: Installed on 2024-09-29 (3 days ago)
+ InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 
(20240827.1)
+ MachineType: LENOVO 21MCS06F00
+ Package: linux (not installed)
+ ProcEnviron:
+  LANG=en_US.UTF-8
+  PATH=(custom, no user)
+  SHELL=/bin/bash
+  TERM=xterm-256color
+  XDG_RUNTIME_DIR=<set>
+ ProcFB: 0 amdgpudrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-45-generic 
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 6.8.0-45.45-generic 6.8.12
+ RelatedPackageVersions:
+  linux-restricted-modules-6.8.0-45-generic N/A
+  linux-backports-modules-6.8.0-45-generic  N/A
+  linux-firmware                            20240318.git3b128b60-0ubuntu2.4
+ Tags: noble wayland-session
+ Uname: Linux 6.8.0-45-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin plugdev sudo users
+ _MarkForUpload: True
+ dmi.bios.date: 08/07/2024
+ dmi.bios.release: 1.8
+ dmi.bios.vendor: LENOVO
+ dmi.bios.version: R2LET27W (1.08 )
+ dmi.board.asset.tag: Not Available
+ dmi.board.name: 21MCS06F00
+ dmi.board.vendor: LENOVO
+ dmi.board.version: SDK0T76530 WIN
+ dmi.chassis.asset.tag: No Asset Tag
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: LENOVO
+ dmi.chassis.version: None
+ dmi.ec.firmware.release: 1.4
+ dmi.modalias: 
dmi:bvnLENOVO:bvrR2LET27W(1.08):bd08/07/2024:br1.8:efr1.4:svnLENOVO:pn21MCS06F00:pvrThinkPadT14Gen5:rvnLENOVO:rn21MCS06F00:rvrSDK0T76530WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21MC_BU_Think_FM_ThinkPadT14Gen5:
+ dmi.product.family: ThinkPad T14 Gen 5
+ dmi.product.name: 21MCS06F00
+ dmi.product.sku: LENOVO_MT_21MC_BU_Think_FM_ThinkPad T14 Gen 5
+ dmi.product.version: ThinkPad T14 Gen 5
+ dmi.sys.vendor: LENOVO

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https://bugs.launchpad.net/bugs/2083454

Title:
  Suspend issue with AMD Ryzen 8840U CPU and kernel 6.8.0-45-generic

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