Public bug reported:

Issue: After the kernel is updated from 6.11 HWE to 6.14 HWE in an upgrade, the 
PC experiences suspend issues every time being put to sleep. After pressing 
sleep, the system would go blackscreen and freeze, with the mouse pointer still 
visible at first, then the screen would start to flicker randomly; the system 
is unresponsive to key-press in this state, and would last for minutes before 
successfully suspending. This bug is reproducible every time every time the PC 
suspends on kernel 6.14. Switching back to kernel 6.11 on boot solves the issue 
completely (system suspend takes under 2 seconds), and switching to kernel 6.14 
causes the stated issue to be reproduced. Cold-rebooting several times did not 
solve the problem.
System: KUbuntu 24.04 (HWE)/ AMD ryzen 9 3950x/ 128GiB RAM/ Radeon RX6600xt/ 
ASUS Prime x570-pro (Bios 5013)/ Display: 3840x2160, XOrg, KWin compositor, 
using the default AMDGPU driver. Using NVME drives. Only KUbuntu installed.
Additional info: The system has been running stably and trouble-free since 
setup until this update, no recent hardware changes, no major recent 
software/config changes. The DMESG during the issue is attached. 

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-27-generic 6.14.0-27.27~24.04.1
ProcVersionSignature: Ubuntu 6.11.0-26.26~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-26-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  kagamisaki   2519 F.... wireplumber
 /dev/snd/controlC0:  kagamisaki   2519 F.... wireplumber
 /dev/snd/seq:        kagamisaki   2517 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Tue Aug 12 22:26:25 2025
InstallationDate: Installed on 2022-05-02 (1198 days ago)
InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 
(20220419)
MachineType: System manufacturer System Product Name
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.11.0-26-generic 
root=UUID=4bb10288-f61c-475e-bd2d-445ff20f7c27 ro quiet splash delayacct 
zswap.enabled=1 amd_pstate=active vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-6.11.0-26-generic N/A
 linux-backports-modules-6.11.0-26-generic  N/A
 linux-firmware                             20240318.git3b128b60-0ubuntu2.15
SourcePackage: linux-hwe-6.14
UpgradeStatus: Upgraded to noble on 2025-03-01 (165 days ago)
dmi.bios.date: 03/22/2024
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5013
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.:bvr5013:bd03/22/2024:br5.17:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX570-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
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

** Affects: linux-hwe-6.14 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble

** Attachment added: "DMESG info when the issue occured."
   
https://bugs.launchpad.net/bugs/2120504/+attachment/5898764/+files/dmesg-20250812-suspendhang-clean.txt

** Description changed:

  Issue: After the kernel is updated from 6.11 HWE to 6.14 HWE in an upgrade, 
the PC experiences suspend issues every time being put to sleep. After pressing 
sleep, the system would go blackscreen and freeze, with the mouse pointer still 
visible at first, then the screen would start to flicker randomly; the system 
is unresponsive to key-press in this state, and would last for minutes before 
successfully suspending. This bug is reproducible every time every time the PC 
suspends on kernel 6.14. Switching back to kernel 6.11 on boot solves the issue 
completely (system suspend takes under 2 seconds), and switching to kernel 6.14 
causes the stated issue to be reproduced. Cold-rebooting several times did not 
solve the problem.
- System: KUbuntu 24.04 (HWE)/ AMD ryzen 9 3950x/ 128GiB RAM/ Radeon RX6600xt/ 
ASUS Prime x570-pro (Bios 5013)/ Display: 3840x2160, XOrg, KWin compositor, 
using the default AMDGPU driver.
- Additional info: The system has been running stably and trouble-free since 
setup until this update, no recent hardware changes, no major recent 
software/config changes. The DMESG during the issue is attached.
+ System: KUbuntu 24.04 (HWE)/ AMD ryzen 9 3950x/ 128GiB RAM/ Radeon RX6600xt/ 
ASUS Prime x570-pro (Bios 5013)/ Display: 3840x2160, XOrg, KWin compositor, 
using the default AMDGPU driver. Using NVME drives. Only KUbuntu installed.
+ Additional info: The system has been running stably and trouble-free since 
setup until this update, no recent hardware changes, no major recent 
software/config changes. The DMESG during the issue is attached. 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: linux-image-6.14.0-27-generic 6.14.0-27.27~24.04.1
  ProcVersionSignature: Ubuntu 6.11.0-26.26~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-26-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.8
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  kagamisaki   2519 F.... wireplumber
-  /dev/snd/controlC0:  kagamisaki   2519 F.... wireplumber
-  /dev/snd/seq:        kagamisaki   2517 F.... pipewire
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  kagamisaki   2519 F.... wireplumber
+  /dev/snd/controlC0:  kagamisaki   2519 F.... wireplumber
+  /dev/snd/seq:        kagamisaki   2517 F.... pipewire
  CRDA: N/A
  CasperMD5CheckResult: pass
  CurrentDesktop: KDE
  Date: Tue Aug 12 22:26:25 2025
  InstallationDate: Installed on 2022-05-02 (1198 days ago)
  InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 
(20220419)
  MachineType: System manufacturer System Product Name
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.11.0-26-generic 
root=UUID=4bb10288-f61c-475e-bd2d-445ff20f7c27 ro quiet splash delayacct 
zswap.enabled=1 amd_pstate=active vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
-  linux-restricted-modules-6.11.0-26-generic N/A
-  linux-backports-modules-6.11.0-26-generic  N/A
-  linux-firmware                             20240318.git3b128b60-0ubuntu2.15
+  linux-restricted-modules-6.11.0-26-generic N/A
+  linux-backports-modules-6.11.0-26-generic  N/A
+  linux-firmware                             20240318.git3b128b60-0ubuntu2.15
  SourcePackage: linux-hwe-6.14
  UpgradeStatus: Upgraded to noble on 2025-03-01 (165 days ago)
  dmi.bios.date: 03/22/2024
  dmi.bios.release: 5.17
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 5013
  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.:bvr5013:bd03/22/2024:br5.17:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX570-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
  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

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-hwe-6.14 in Ubuntu.
https://bugs.launchpad.net/bugs/2120504

Title:
  Kernel 6.14 causes suspend and sleep issues

Status in linux-hwe-6.14 package in Ubuntu:
  New

Bug description:
  Issue: After the kernel is updated from 6.11 HWE to 6.14 HWE in an upgrade, 
the PC experiences suspend issues every time being put to sleep. After pressing 
sleep, the system would go blackscreen and freeze, with the mouse pointer still 
visible at first, then the screen would start to flicker randomly; the system 
is unresponsive to key-press in this state, and would last for minutes before 
successfully suspending. This bug is reproducible every time every time the PC 
suspends on kernel 6.14. Switching back to kernel 6.11 on boot solves the issue 
completely (system suspend takes under 2 seconds), and switching to kernel 6.14 
causes the stated issue to be reproduced. Cold-rebooting several times did not 
solve the problem.
  System: KUbuntu 24.04 (HWE)/ AMD ryzen 9 3950x/ 128GiB RAM/ Radeon RX6600xt/ 
ASUS Prime x570-pro (Bios 5013)/ Display: 3840x2160, XOrg, KWin compositor, 
using the default AMDGPU driver. Using NVME drives. Only KUbuntu installed.
  Additional info: The system has been running stably and trouble-free since 
setup until this update, no recent hardware changes, no major recent 
software/config changes. The DMESG during the issue is attached. 

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: linux-image-6.14.0-27-generic 6.14.0-27.27~24.04.1
  ProcVersionSignature: Ubuntu 6.11.0-26.26~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-26-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  kagamisaki   2519 F.... wireplumber
   /dev/snd/controlC0:  kagamisaki   2519 F.... wireplumber
   /dev/snd/seq:        kagamisaki   2517 F.... pipewire
  CRDA: N/A
  CasperMD5CheckResult: pass
  CurrentDesktop: KDE
  Date: Tue Aug 12 22:26:25 2025
  InstallationDate: Installed on 2022-05-02 (1198 days ago)
  InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 
(20220419)
  MachineType: System manufacturer System Product Name
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.11.0-26-generic 
root=UUID=4bb10288-f61c-475e-bd2d-445ff20f7c27 ro quiet splash delayacct 
zswap.enabled=1 amd_pstate=active vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-6.11.0-26-generic N/A
   linux-backports-modules-6.11.0-26-generic  N/A
   linux-firmware                             20240318.git3b128b60-0ubuntu2.15
  SourcePackage: linux-hwe-6.14
  UpgradeStatus: Upgraded to noble on 2025-03-01 (165 days ago)
  dmi.bios.date: 03/22/2024
  dmi.bios.release: 5.17
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 5013
  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.:bvr5013:bd03/22/2024:br5.17:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX570-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
  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

To manage notifications about this bug go to:
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