** Description changed:

+ SRU Justification
+ [Impact]
+ Dell Inspiron 7591 hangs while suspending.
+ 
+ [Fix]
+ The issue is from this commit after v6.16-rc1
+ 07ac275981b1 platform/x86: alienware-wmi-wmax: Add support for manual fan 
control
+ 
+ And has been fixed by the commit in v6.18-rc3
+ a49c4d48c3b6 platform/x86: alienware-wmi-wmax: Fix NULL pointer dereference 
in sleep handlers
+ 
+ [Test]
+ Dell Inspiron 7591 shouldn't hang while doing suspend and resume test.
+ 
+ [Where problems could occur]
+ The commit is straightforward, it is not possible to introduce any regression.
+ 
+ ===
+ 
  [Summary]
  
  During the SRU testing, I found there is one dell laptop didn't go into 
suspend on both -update and -proposed kernel.
  After executing systemctl suspend, I can see the screen was off, but the 
power led didn't shows a breathing LED, then the system got stuck, only way to 
recover it was by power cycling.
  
  After power cycling I used "journalctl -b -1" to see the previous log
  and saw following log.
  
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: session-7.scope: Unit 
now frozen-by-parent.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: [email protected]: Unit 
now frozen-by-parent.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: session-1.scope: Unit 
now frozen-by-parent.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: user.slice: Unit now 
frozen.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: user-1000.slice: Unit 
now frozen-by-parent.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd-sleep[4285]: Successfully 
froze unit 'user.slice'.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd-sleep[4285]: Performing 
sleep operation 'suspend'...
  Nov 21 09:41:38 dell-inspiron-7591-c26881 kernel: PM: suspend entry (s2idle)
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: 
grub-initrd-fallback.service: Deactivated successfully.
  Nov 21 09:41:38 dell-inspiron-7591-c26881 systemd[1]: Finished 
grub-initrd-fallback.service - GRUB failed boot detection.
  
  [Reproduce steps]
  1. Install ubuntu 25.10
  2. Suspend the system
  
  [Expected result]
  
  The system should wake up by pressing the power button or by rtc wakeup
  event.
  
  [Actual result]
  
  The system got stuck.
  
  [Additional information]
  
  Following are the DUT that is impacted.
  https://certification.canonical.com/hardware/201903-26881/
  
  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: linux-image-6.17.0-5-generic 6.17.0-5.5
  ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
  Uname: Linux 6.17.0-5-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  ubuntu     2297 F.... pipewire
-                       ubuntu     2363 F.... wireplumber
-  /dev/snd/seq:        ubuntu     2297 F.... pipewire
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  ubuntu     2297 F.... pipewire
+                       ubuntu     2363 F.... wireplumber
+  /dev/snd/seq:        ubuntu     2297 F.... pipewire
  CasperMD5CheckResult: pass
  CloudArchitecture: x86_64
  CloudID: maas
  CloudName: maas
  CloudPlatform: maas
  CloudSubPlatform: seed-dir (http://10.102.152.2:5248/MAAS/metadata/)
  Date: Fri Nov 21 10:43:45 2025
  InstallationDate: Installed on 2025-10-14 (38 days ago)
  InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
  IwDevWlp59s0Link: Not connected.
  MachineType: Dell Inc. Inspiron 7590
  ProcEnviron:
-  LANG=en_US.UTF-8
-  PATH=(custom, no user)
-  SHELL=/bin/bash
-  TERM=screen-256color
+  LANG=en_US.UTF-8
+  PATH=(custom, no user)
+  SHELL=/bin/bash
+  TERM=screen-256color
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-5-generic 
root=UUID=82bcd0fa-fe5b-4c91-9949-babf76b75987 ro quiet splash 
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M 
vt.handoff=7
  RelatedPackageVersions:
-  firmware-sof   N/A
-  linux-firmware 20250901.git993ff19b-0ubuntu1
+  firmware-sof   N/A
+  linux-firmware 20250901.git993ff19b-0ubuntu1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/01/2023
  dmi.bios.release: 1.20
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.20.0
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.20.0:bd06/01/2023:br1.20:svnDellInc.:pnInspiron7590:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:sku0922:
  dmi.product.family: Inspiron
  dmi.product.name: Inspiron 7590
  dmi.product.sku: 0922
  dmi.sys.vendor: Dell Inc.

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https://bugs.launchpad.net/bugs/2132095

Title:
  The machine didn’t go into suspend and got stuck

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