Messages in this thread |  | | Date | Sun, 5 Apr 2026 09:16:59 +0200 | | From | Lukas Wunner <> | | Subject | Re: [BUG] ASUS ProArt PX13 HN7306WU: amd_pmc s2idle S0ix corrupts AMD 1022:150b root port, NVIDIA dGPU returns header type 7f |
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On Fri, Apr 03, 2026 at 04:28:23PM -0500, Mario Limonciello wrote: > On 4/3/26 4:05 PM, Mario Limonciello wrote: > > Thanks - the most obvious observation is what you already noted - > > without hotplug support the root port skips PM all together. > > > > [24.575705] pcieport 0000:00:01.2: PCI PM: Suspend power state: D0 > > [24.575707] pcieport 0000:00:01.2: PCI PM: Skipped > > [24.575709] pcieport 0000:00:01.1: PCI PM: Suspend power state: D0 > > [24.575709] pcieport 0000:00:01.1: PCI PM: Skipped > > > > vs > > > > [29.279987] pcieport 0000:00:01.1: power state changed by ACPI to D3cold > > [29.279991] pcieport 0000:00:01.1: PCI PM: Suspend power state: D3cold > > [29.280214] pcieport 0000:00:01.2: power state changed by ACPI to D3cold > > [29.280219] pcieport 0000:00:01.2: PCI PM: Suspend power state: D3cold
Those are different Root Ports than 0000:00:03.1.
> > The hotplug support seems to apply to 3 ports. [...] > > 0000:00:03.1 (Bus c4): > > - Slot Capabilities: 0x000425e0 > > - Flags: HotPlug+ Surprise+ LLActRep+ [...] > OK - so the issue comes from acpi_pci_bridge_d3() which is called from > platform_pci_bridge_d3(): > > if (acpi_pci_disabled || !dev->is_pciehp) > return false;
Also not relevant, the is_pciehp flag is true because of the set HotPlug+ bit in the Slot Capabilities Register, so the check doesn't evaluate to true and the function doesn't return here.
Thanks,
Lukas
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