NVIDIA
PCI-Express Runtime D3 (RTD3) Power Management
NVIDIA Open GPU Kernel Modules Version
570.133.07
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
does not matter.
Kernel Release
does not matter
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- [x] I am running on a stable kernel release.
Hardware: GPU
4060TI
Describe the bug
No PCI-Express Runtime D3 (RTD3) Power Management. I get not supported.
on -> https://us.download.nvidia.com/XFree86/Linux-x86_64/570.133.07/README/dynamicpowermanagement.html
""Supported Configurations .... This feature is supported on notebooks and desktops.""
BUT on
https://github.com/NVIDIA/open-gpu-kernel-modules/blob/c5e439fea4fe81c78d52b95419c30cabe44e48fd/src/nvidia/arch/nvalloc/unix/src/dynamic-power.c#L737
you literally
// From GA102+, we enable RTD3 only if system is found to be Notebook if ((chipId >= NV_PMC_BOOT_42_CHIP_ID_GA102) && (rm_is_system_notebook())) { *pOption = NV_REG_DYNAMIC_POWER_MANAGEMENT_FINE; return NV_OK; }
If I understand correctly the function above i'll not run because we have before it:
if (*pRegkeyValue != NV_REG_DYNAMIC_POWER_MANAGEMENT_DEFAULT) { *pOption = *pRegkeyValue; return NV_OK; }
should honor NVreg_DynamicPowerManagement option but I still get "not supported".
So, is this a bug ? oversight ? or not supposed to be enabled on Desktop cards after all ?
My motherboard dsdt.zip apparently shows _PR3 is supported.
I have tested making the intel igpu the main output device but I still get "not supported". I'm sure nothing is running on the nvidia gpu, nvidia-smi confirms nothing is running on the gpu. I'm out of ideas.
To Reproduce
load nvidia module with option NVreg_DynamicPowerManagement=0x01 or NVreg_DynamicPowerManagement=0x02
and
root@pve:~# cat /proc/driver/nvidia/gpus/0000:01:00.0/power Runtime D3 status: Not supported Video Memory: Active
GPU Hardware Support: Video Memory Self Refresh: Not Supported Video Memory Off: Supported
S0ix Power Management: Platform Support: Supported Status: Disabled
Notebook Dynamic Boost: Not Supported
So, what nvidia desktop cards supports PCI-Express Runtime D3 (RTD3) Power Management?
Bug Incidence
Always
nvidia-bug-report.log.gz
More Info
No response
Even on my 2080 Ti it says Runtime D3 status: Disabled by default.
And dump of DSDT does not show _PR3.
