https://bugzilla.kernel.org/show_bug.cgi?id=220705

--- Comment #36 from Lukas Wunner ([email protected]) ---
@Rich H: Thanks! The dmesg output looks good, no errors.

But there's an oddity with the lspci output: On the wifi card (01:00.0), the L1
PM Substates Extended Capability has all the extra ASPM features disabled and
the T_CommonMode and LTR1.2_Threshold fields are not configured:

                L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
                           T_CommonMode=0us LTR1.2_Threshold=0ns

The expected settings would be:

                L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
                           T_CommonMode=0us LTR1.2_Threshold=106496ns

.. because coreboot enables all these features and with the "default" ASPM
policy, the kernel shouldn't touch those settings (except update the
LTR1.2_Threshold).

After a fresh boot and *without* a sleep/wake cycle, are you seeing those ASPM
features enabled (+) or disabled (-)?

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