Re: My AlderLake Dell (XPS-9320) needs these patches to get full standby/low-power modes

Kenneth R. Crudup
2024-05-13T05:43:32Z

On Sat, 4 Nov 2023, Kenneth R. Crudup wrote:

> I'd bisected it to the following commits (in this order):
> 4ff116d0d5fd PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
> 5e85eba6f50d PCI/ASPM: Refactor L1 PM Substates Control Register programming

So the good news is the above two have made it into (the recently-released) 6.9!

Now I'm rooting for these last three:

> 1a0102a08f20 UBUNTU: SAUCE: PCI/ASPM: Enable ASPM for links under VMD domain
> 47c7bfd31514 UBUNTU: SAUCE: PCI/ASPM: Enable LTR for endpoints behind VMD
> 154d48da2c57 UBUNTU: SAUCE: vmd: fixup bridge ASPM by driver name instead

Applying (refactored for 6.8+ versions) of these last three enable full power
savings for 6.9 .

-Kenny, fingers crossed

--
Kenneth R. Crudup / Sr. SW Engineer, Scott County Consulting, Orange County CA