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Date:   Sun, 27 Dec 2020 21:43:49 -0800 (PST)
From:   "Kenneth R. Crudup" <>
To:     Bjorn Helgaas <>
cc:     Vidya Sagar <>,,
Subject: Re: Commit 4257f7e0 ("PCI/ASPM: Save/restore L1SS Capability for
 suspend/resume") causing hibernate resume failures

OK, got more info:

On Sun, 27 Dec 2020, Bjorn Helgaas wrote:

> If it's convenient, can you try the patch below?  If the debug patch
> doesn't help:

>   - Are you seeing the hibernate/resume problem when on AC or on
>     battery?

OK, so:

- on TLP, before your patch, it panic()s on AC, but not on battery
- on TLP, with your patch, it panic()s on battery, but NOT on AC
- if TLP is masked, it still panic()s, but I forget if AC or battery
- even if I mask TLP, with your commit in place it panic()s

>   - If you revert 4257f7e008ea, does hibernate/resume work fine?  Both
>     with the tlp tweak and without?

Definitely with the revert everything works. I'll try your patch after the
revert and see if anything changes.


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

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