nvidia-powerd causes microstuttering #1061
Description
NVIDIA Open GPU Kernel Modules Version
595.45.04
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 Linux 43 (KDE Plasma Desktop Edition)
Kernel Release
Linux fedora 6.19.6-cachyos1.fc43.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 4060 Laptop GPU
Describe the bug
nvidia-powerd causes microstutters intermittently, the frameratre line in mangohud becomes jagged for a few seconds and it visibly stutters. Happens on any laptop performance mode. Very noticeable in ARC Raiders and GTA V Enhanced. Might be exacerbated by Reflex (not sure on that, the issue is present either way).
I first noticed it does not stutter when I reinstalled the drivers, powerd seems to not work on the first boot and it's totally stutter-free. So powerd being off at first kernel boot is probably also a bug. I did not check specifically if it was on or off, however I was capped at ~2000mhz clock speed, same as when it is turned off manually, so it likely was.
The issue should be reproducible since at least 580.x drivers, did not test earlier ones.
To Reproduce
Enter practice range in ARC Raiders and observe framerate graph as well as visual stutters. Or drive around in GTA V Enhanced. Used latest Proton-GE and Proton-CachyOS.
Bug Incidence
Always
nvidia-bug-report.log.gz
More Info
CPU: AMD Ryzen 7 7840HS
Lenovo Legion Slim 5 16APH8
Dedicated GPU only, haven't tested in hybrid mode.