The setpci commands I used modified the LnkCtl option but not the LnkCap
values. I'm not sure but suspect that the LnkCap values are what are
causing the problem.
--
LnkCap: Port #17, Speed 8GT/s, Width x4, ASPM not supported, Exit Latency L0s
<1us, L1 <16us
ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkCap: Port #7, Speed 8GT/s, Width x1, ASPM not supported, Exit Latency L0s
<1us, L1 <16us
ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
vs
LnkCap: Port #17, Speed 8GT/s, Width x4, ASPM not supported, Exit Latency L0s
unlimited, L1 <16us
ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkCap: Port #7, Speed 8GT/s, Width x1, ASPM not supported, Exit Latency L0s
unlimited, L1 <16us
ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
--
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https://bugs.launchpad.net/bugs/1682711
Title:
PCIe ASPM disabled even when enabled in FADT and pcie_aspm=force /
setpci used
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