Re: [Regression] [PCI/ASPM] [ASUS PN51] Reboot on resume attempt (bisect done; commit found)

Michael Schaller
2023-12-29T10:32:50Z

> Hi Michael, thank you very much for debugging and reporting this!
> Sorry for the major inconvenience.
>
You're welcome and the only inconvenience was doing the bisect. ;-)

> We have some known issues with saving and restoring ASPM state on
> suspend/resume, in particular with ASPM L1 Substates, which are
> enabled on this device.
>
> David Box has a patch in the works that should fix one of those
> issues:
> https://lore.kernel.org/r/20231221011250.191599-1-david.e.box@linux.intel.com
>
> It's not merged yet, but it's possible it might fix or at least be
> related to this. If you try it out, please let us know what happens.
>
I gave the proposed patch a quick test on top of kernel 6.6.8 and it
didn't affect this issue (the reboot still happens on resume attempt).