NVIDIA / NVIDIA/open-gpu-kernel-modules
NVRM: krcWatchdogCallbackVblankRecovery_IMPL: NVRM-RC: RM has detected that 7 Seconds without a Vblank Counter Update on head:D0
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Description
NVIDIA Open GPU Kernel Modules Version
550.78
Please confirm this issue does not happen with the proprietary driver (of the same version). This issue tracker is only for bugs specific to the open kernel driver.
- I confirm that this does not happen with the proprietary driver package.
Operating System and Version
Fedora 40
Kernel Release
6.8.7-300.fc40.x86_64
Please confirm you are running a stable release kernel (e.g. not a -rc). We do not accept bug reports for unreleased kernels.
- I am running on a stable kernel release.
Hardware: GPU
NVIDIA GeForce RTX 4070 SUPER
Describe the bug
Kernel messages being spammed by these lines:
[ 6614.717414] NVRM: Xid (PCI:0000:01:00): 16, pid='<unknown>', name=<unknown>, Head 00000003 Count 0000f82a
[ 6614.717420] NVRM: krcWatchdogCallbackVblankRecovery_IMPL: NVRM-RC: RM has detected that 7 Seconds without a Vblank Counter Update on head:D0
After a few iterations of the two, it keeps spamming NVRM: krcWatchdogCallbackVblankRecovery_IMPL [...].
To Reproduce
Just boot the system with the open kernel modules installed.
Bug Incidence
Always
nvidia-bug-report.log.gz
More Info
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the attached nvidia-bug-report.log.gz and the repeated Xid 16 and krcWatchdogCallbackVblankRecovery_IMPL messages. Reproduce on Fedora 40 with kernel 6.8.7-300.fc40.x86_64, NVIDIA 550.78 open modules, and an RTX 4070 SUPER; done means identifying and resolving the cause of the recurring messages.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, linux
- Domain
- computer-graphics, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100