[Bug 2109439] Re: System doesn't respond after suspend

[Tony Bonaccio]

Additional information for my specific case:

Ubuntu Studio flavor, recently upgraded to 24.04 LTS from 22.04 LTS
Kernel 6.8.0-58-lowlatency
Lenovo K450e Desktop computer, two monitors
NVidia GEForce GTX 750 running 550.120 driver

The computer appears to power back on when resuming.  Power light goes
from blinking to on steady and some HDD activity occurs.  Monitors both
remain in low power/suspend state, power light is yellow instead of
green (active).  Keyboard unresponsive, so cannot Ctrl-Alt-F2 to console
session.  Mouse unresponsive.

Switching to kernel 6.8.0-57-lowlatency does not change the behavior for
me.

Behavior was not present in 22.04 LTS.  Suspend/resume worked correctly
every time.

As an experiment I set my screensaver to power off the two monitors
after a specified time interval but NOT suspend the machine.  Resulting
behavior was as expected: monitors powered off (power light turns
yellow) at specified time and then turned back on when Ctrl key pressed
on keyboard (power light turns green).  Point is the OS/driver is able
to power the monitors off then back on.

Please advise if I can provide further information.

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https://bugs.launchpad.net/bugs/2109439

Title:
  System doesn't respond after suspend

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  After I suspend, the system doesn't respond and I need to hold the power button down to shut it off.
  It still works fine if I boot to the previous kernel 6.8.0-57-generic

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.26
  ProcVersionSignature: Ubuntu 6.8.0-58.60-generic 6.8.12
  Uname: Linux 6.8.0-58-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Apr 27 16:14:52 2025
  InstallationDate: Installed on 2025-04-11 (16 days ago)
  InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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