Public bug reported:
Hardware: CyberPowerPC / ASUS Z890 MAX GAMING WIFI7, BIOS 3002 (01/29/2026)
CPU: Intel Core Ultra 9 285K (Arrow Lake)
GPU: Intel Arrow Lake iGPU (i915) + NVIDIA RTX 4070 Ti SUPER (nvidia 595.84,
DKMS)
Kubuntu 24.04, X11/KDE Plasma
Summary:
Resume from hibernation reliably hangs on 6.8.0-139-generic. Booting
6.8.0-138-generic, with no other package changes, resumes from hibernation
without any issues. This isolates the regression to the kernel package
itself, not to userspace, initramfs, or firmware shipped alongside it.
Details:
The hibernation image is written and read back successfully. The restored
kernel begins resuming devices and then never completes -- "PM: resume of
devices complete" never prints. The machine is not frozen: it continues
servicing timers indefinitely (observed for 5+ minutes without a hang or
watchdog panic).
Console output (captured with no_console_suspend ignore_loglevel
pm_debug_messages keep_bootcon):
[ 52.940] PM: hibernation: Read 12721052 kbytes in 11.76 seconds
[ 52.941] PM: Image successfully loaded
[174.845] i915 0000:00:02.0: [drm] GT1: Loaded GSC firmware i915/mtl_gsc_1.bin
[174.865] i915 0000:00:02.0: [drm] GT1: HuC: authenticated for all workloads
[194.867] i915 0000:00:02.0: [drm] *ERROR* GT1: GSC proxy component didn't
bind within the expected timeout
[194.873] i915 0000:00:02.0: [drm] *ERROR* GT1: GSC proxy handler failed to
init
[228.539] page_pool_release_retry() stalled pool shutdown: id 29, 7 inflight
60 sec
(repeats at 120, 181, 241, 302, 362 sec ...)
Note: mei_gsc_proxy binds correctly on resume from S3 (suspend-to-RAM) on
this same machine; it only fails to bind after hibernation (S4).
Also observed on the hibernate-entry path, one WARNING per CPU offlined
(may be unrelated, noting for completeness):
sysfs group 'package_00_die_00' not found for kobject 'intel_uncore_frequency'
WARNING: at fs/sysfs/group.c:282 sysfs_remove_group+0x85/0x90
Call Trace: uncore_freq_remove_die_entry -> uncore_event_cpu_offline
-> cpuhp_invoke_callback
Steps to reproduce:
1. Boot 6.8.0-139-generic.
2. sudo systemctl hibernate (or via suspend-then-hibernate).
3. Power the machine back on.
Expected: resumes normally.
Actual: hangs indefinitely during device resume; only page_pool_release_retry
warnings continue printing every ~60 seconds.
Regression confirmed:
Booted 6.8.0-138-generic with identical userspace/initramfs/firmware
packages (only the running kernel differs). Hibernate/resume completed
successfully with no issues. This confirms the regression is isolated to
the 6.8.0-139 kernel package itself.
Already ruled out:
- nvidia DKMS module builds cleanly for 6.8.0-139; vermagic matches uname -r
- Unloading all nvidia modules (nvidia_drm, nvidia_modeset, nvidia_uvm,
nvidia) before hibernating does NOT fix the hang
- CONFIG_DPM_WATCHDOG is not set in this kernel build, so no automatic
panic/device name is produced on the hang; diagnosis required manual
console capture via no_console_suspend
Workaround in use: booting 6.8.0-138-generic until this is resolved.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-139-generic 6.8.0-139.139
ProcVersionSignature: Ubuntu 6.8.0-139.139-generic 6.8.12
Uname: Linux 6.8.0-139-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: pm 3425 F.... wireplumber
/dev/snd/controlC1: pm 3425 F.... wireplumber
/dev/snd/controlC0: pm 3425 F.... wireplumber
/dev/snd/seq: pm 3423 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Thu Sep 10 13:22:26 2026
HibernationDevice: RESUME=UUID=f2799cf1-38b5-43b9-80b1-9f330e95c354
InstallationDate: Installed on 2024-12-22 (628 days ago)
InstallationMedia: Kubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 (20240827)
MachineType: CyberPowerPC GamingPC
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-139-generic
root=UUID=d7e17bac-b56c-4498-b5e0-e249bd682b7d ro no_console_suspend
ignore_loglevel pm_debug_messages keep_bootcon
cryptdevice=UUID=c8b193ba-0124-495f-a549-091eb877b76a:cryptroot
root=/dev/mapper/cryptroot resume=UUID=f2799cf1-38b5-43b9-80b1-9f330e95c354
"acpi_osi=Windows 2022" nvidia_drm.fbdev=0
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.8.0-139-generic N/A
linux-backports-modules-6.8.0-139-generic N/A
linux-firmware 20240318.git3b128b60.0ubuntu3.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/29/2026
dmi.bios.release: 30.2
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3002
dmi.board.asset.tag: Default string
dmi.board.name: Z890 MAX GAMING WIFI7
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3002:bd01/29/2026:br30.2:svnCyberPowerPC:pnGamingPC:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ890MAXGAMINGWIFI7:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuCPPC-SYSTEM-US:
dmi.product.family: C Series
dmi.product.name: GamingPC
dmi.product.sku: CPPC-SYSTEM-US
dmi.product.version: System Version
dmi.sys.vendor: CyberPowerPC
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2167009
Title:
Regression in 6.8.0-139: resume from hibernation hangs (GSC proxy bind
timeout); 6.8.0-138 unaffected with identical userspace
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2167009/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
