[Bug 2161961] [NEW] Black screen after suspend/resume on HP ZBook 15 G4 with kernel 7.0.0-28

Public bug reported: Problem Description: After upgrading to kernel 7.0.0-28-generic, my HP ZBook 15 G4 laptop displays a completely black screen upon waking from suspend (closing and opening the lid). The system appears to be running (fans, LEDs active) but the display remains off. The only way to recover is to force a hard shutdown by holding the power button. This issue did not exist with kernel 6.17.0-41-generic, where suspend/resume worked perfectly. System Information: - Laptop Model: HP ZBook 15 G4 - Graphics Card: NVIDIA Quadro M1200 or M2200 (Hybrid/Discrete) - OS: Ubuntu (version 24.10 or 25.04 - please confirm based on kernel) - Current Kernel: 7.0.0-28-generic - Previous Working Kernel: 6.17.0-41-generic Steps to Reproduce: 1. Boot the system with kernel 7.0.0-28-generic. 2. Close the lid or manually suspend the system (sudo systemctl suspend). 3. Wait a few seconds. 4. Open the lid or press any key to wake the system. 5. The screen remains black and unresponsive. No backlight, no display output. Expected Behavior: The display should turn on and show the login screen or desktop, as it does with kernel 6.17.0-41. Additional Context: I have already attempted the following workarounds without success: - Adding kernel parameters to GRUB: nvidia.NVreg_PreserveVideoMemoryAllocations=1 acpi_sleep=nonvs intel_idle.max_cstate=2 - Disabling Secure Boot and setting Graphics Mode to "Discrete" in BIOS - Reinstalling NVIDIA drivers This appears to be a regression introduced in kernel 7.0.0-28, as it works flawlessly with kernel 6.17.0-41. Please investigate the changes in DRM/NVIDIA/ACPI handling that may have caused this issue for HP ZBook G4 series laptops. I have attached the requested logs: - version.log - lspci-vnv.log Thank you for your time and efforts in resolving this issue. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-28-generic 7.0.0-28.28 ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12 Uname: Linux 7.0.0-28-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: NimaHatami 3758 F.... wireplumber /dev/snd/controlC0: NimaHatami 3758 F.... wireplumber /dev/snd/seq: NimaHatami 3742 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Tue Jul 28 14:06:27 2026 MachineType: HP HP ZBook 15 G4 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-28-generic root=UUID=4fccc91e-5b81-4057-be81-4e0854b8b673 ro quiet splash nvidia.NVreg_PreserveVideoMemoryAllocations=1 acpi_sleep=nonvs intel_idle.max_cstate=2 crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 12/08/2023 dmi.bios.release: 1.49 dmi.bios.vendor: HP dmi.bios.version: P70 Ver. 01.49 dmi.board.name: 8275 dmi.board.vendor: HP dmi.board.version: KBC Version 46.80 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.ec.firmware.release: 70.128 dmi.modalias: dmi:bvnHP:bvrP70Ver.01.49:bd12/08/2023:br1.49:efr70.128:svnHP:pnHPZBook15G4:pvr:rvnHP:rn8275:rvrKBCVersion46.80:cvnHP:ct10:cvr:skuY4E78AV:pfa103C_5336AN: dmi.product.family: 103C_5336AN dmi.product.name: HP ZBook 15 G4 dmi.product.sku: Y4E78AV dmi.sys.vendor: HP ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161961 Title: Black screen after suspend/resume on HP ZBook 15 G4 with kernel 7.0.0-28 Status in linux package in Ubuntu: New Bug description: Problem Description: After upgrading to kernel 7.0.0-28-generic, my HP ZBook 15 G4 laptop displays a completely black screen upon waking from suspend (closing and opening the lid). The system appears to be running (fans, LEDs active) but the display remains off. The only way to recover is to force a hard shutdown by holding the power button. This issue did not exist with kernel 6.17.0-41-generic, where suspend/resume worked perfectly. System Information: - Laptop Model: HP ZBook 15 G4 - Graphics Card: NVIDIA Quadro M1200 or M2200 (Hybrid/Discrete) - OS: Ubuntu (version 24.10 or 25.04 - please confirm based on kernel) - Current Kernel: 7.0.0-28-generic - Previous Working Kernel: 6.17.0-41-generic Steps to Reproduce: 1. Boot the system with kernel 7.0.0-28-generic. 2. Close the lid or manually suspend the system (sudo systemctl suspend). 3. Wait a few seconds. 4. Open the lid or press any key to wake the system. 5. The screen remains black and unresponsive. No backlight, no display output. Expected Behavior: The display should turn on and show the login screen or desktop, as it does with kernel 6.17.0-41. Additional Context: I have already attempted the following workarounds without success: - Adding kernel parameters to GRUB: nvidia.NVreg_PreserveVideoMemoryAllocations=1 acpi_sleep=nonvs intel_idle.max_cstate=2 - Disabling Secure Boot and setting Graphics Mode to "Discrete" in BIOS - Reinstalling NVIDIA drivers This appears to be a regression introduced in kernel 7.0.0-28, as it works flawlessly with kernel 6.17.0-41. Please investigate the changes in DRM/NVIDIA/ACPI handling that may have caused this issue for HP ZBook G4 series laptops. I have attached the requested logs: - version.log - lspci-vnv.log Thank you for your time and efforts in resolving this issue. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-28-generic 7.0.0-28.28 ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12 Uname: Linux 7.0.0-28-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: NimaHatami 3758 F.... wireplumber /dev/snd/controlC0: NimaHatami 3758 F.... wireplumber /dev/snd/seq: NimaHatami 3742 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Tue Jul 28 14:06:27 2026 MachineType: HP HP ZBook 15 G4 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-28-generic root=UUID=4fccc91e-5b81-4057-be81-4e0854b8b673 ro quiet splash nvidia.NVreg_PreserveVideoMemoryAllocations=1 acpi_sleep=nonvs intel_idle.max_cstate=2 crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 12/08/2023 dmi.bios.release: 1.49 dmi.bios.vendor: HP dmi.bios.version: P70 Ver. 01.49 dmi.board.name: 8275 dmi.board.vendor: HP dmi.board.version: KBC Version 46.80 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.ec.firmware.release: 70.128 dmi.modalias: dmi:bvnHP:bvrP70Ver.01.49:bd12/08/2023:br1.49:efr70.128:svnHP:pnHPZBook15G4:pvr:rvnHP:rn8275:rvrKBCVersion46.80:cvnHP:ct10:cvr:skuY4E78AV:pfa103C_5336AN: dmi.product.family: 103C_5336AN dmi.product.name: HP ZBook 15 G4 dmi.product.sku: Y4E78AV dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161961/+subscriptions