Failed to display anything when early KMS

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

Arch Linux

Kernel Release

6.8.9-arch1-1

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 3050 Ti Laptop GPU

Describe the bug

Failed to display anything when early KMS.
Only a small portion on the left side of the screen can display content, but flash quickly.
When I power on my laptop, I get chaotic content displayed. It works well for a long time, and 550.76 is the last version that it works well.

I've enabled early KMS for Nvidia (much early than this issue happening), which is needed for Plymouth. (I do not know if it is related to this issue).

# /etc/mkinitcpio.conf
MODULES=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
HOOKS=(base systemd plymouth autodetect modconf kms keyboard sd-vconsole numlock block sd-encrypt filesystems fsck)

To Reproduce

Install the driver and you'll meet it

Bug Incidence

Always

nvidia-bug-report.log.gz

Failed to collect it. I cannot operate my laptop without display!

More Info

No response

Start by reproducing the display failure with the early-KMS configuration in /etc/mkinitcpio.conf, comparing driver versions 550.76 and 550.78 on the reported Arch Linux kernel and GPU. The issue is resolved when the regression is isolated and display output works reliably with early KMS; no test or source file is identified in the report.