Public bug reported:
The external display disconnected during a power-management resume path
and could not be detected again until a restart/power cycle. This
coincided with the NVIDIA GPU being lost from PCIe; it was not an
ordinary monitor hotplug failure.
This is the observed event order from the previous boot journal (local
time, UTC-7):
At 10:43:02, ACPI power-on for the PCIe path timed out:
ACPI Error: Aborting method \_SB.PC00.PEG1.PXP._ON due to previous error
(AE_AML_LOOP_TIMEOUT)
At 10:43:03–10:43:05, PCIe link recovery failed:
pcieport 0000:00:01.0: broken device, retraining non-functional downstream link
at 2.5GT/s
pcieport 0000:00:01.0: retraining failed
pcieport 0000:00:01.0: Data Link Layer Link Active not set in 100 msec
At 10:43:05, the NVIDIA driver reported:
NVRM: Xid (PCI:0000:01:00): 79, GPU has fallen off the bus.
NVRM: gpuPowerManagementResume: GSP boot failed at resume (bootMode 0x1): 0x65
NVRM: Xid (PCI:0000:01:00): 154, GPU recovery action changed from 0x0 (None) to
0x1 (GPU Reset Required)
Later in the same boot, suspend hung. At 11:13:50, nvidia-suspend.service
began. Starting at 11:13:55 and repeating every five seconds through 11:16:00,
nvidia-modeset emitted:
nvidia-modeset: ERROR: GPU:0: Error while waiting for GPU progress:
0x0000c67d:0 2:0:4048:4040
The graphical system did not recover; normal reboot requests conflicted
with the pending NVIDIA suspend/resume jobs, and the machine required a
forced restart/power cycle.
Environment:
- Ubuntu 26.04 LTS
- Kernel: 7.0.0-29-generic / package 7.0.0-29.29
- Hardware: MSI Stealth GS66 12UGS
- BIOS: E16V5IFB.10A
- GPU: NVIDIA GeForce RTX 3070 Ti Laptop GPU, PCI ID 10de:24a0
- Package: nvidia-driver-595-open 595.84-0ubuntu0.26.04.1
- NVIDIA driver version: 595.84
The journal establishes the sequence: an ACPI/PCIe/GPU-loss failure
occurred during resume, followed later by a suspend hang while the
driver waited for GPU progress. It does not establish whether the
underlying cause is firmware, kernel PCIe power management, or NVIDIA
driver code.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: nvidia-driver-595-open 595.84-0ubuntu0.26.04.1
ProcVersionSignature: Ubuntu 7.0.0-29.29-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 10 11:33:26 2026
InstallationDate: Installed on 2026-07-26 (16 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
SourcePackage: nvidia-graphics-drivers-595
UpgradeStatus: Upgraded to resolute on 2026-07-26 (16 days ago)
** Affects: nvidia-graphics-drivers-595 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2163194
Title:
RTX 3070 Ti Laptop GPU falls off PCIe bus during resume; subsequent
suspend hangs in nvidia-suspend.service
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