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Whiskey Lake and HP: ACPI AE_NOT_FOUND and no s3 in kernel v5.0

Bug #1819282 reported by Fmstrat on 2019-03-09

This bug affects 3 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

Hardware: HP Spectre x360 13" i7 2018 Gem Cut

No s3 support and ACPI errors in dmesg:

[ 0.165087] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[ 0.165087] ACPI: bus type PCI registered
[ 0.165087] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.165087] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[ 0.165087] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in E820
[ 0.165087] PCI: Using configuration type 1 for base access
[ 0.165256] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.165256] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.165256] ACPI: Added _OSI(Module Device)
[ 0.165256] ACPI: Added _OSI(Processor Device)
[ 0.165256] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.165256] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.165256] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.165256] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 0.165256] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[ 0.209836] ACPI BIOS Error (bug): Could not resolve [\_SB.PCI0.XDCI], AE_NOT_FOUND (20181213/dswload2-160)
[ 0.209841] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20181213/psobject-221)
[ 0.209844] ACPI: Skipping parse of AML opcode: Scope (0x0010)
[ 0.210311] ACPI BIOS Error (bug): Could not resolve [\_SB.PCI0.I2C1.TPL1], AE_NOT_FOUND (20181213/dswload2-160)
[ 0.210315] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20181213/psobject-221)
[ 0.210317] ACPI: Skipping parse of AML opcode: Scope (0x0010)
[ 0.210811] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.GPLD], AE_ALREADY_EXISTS (20181213/dswload2-324)
[ 0.210814] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221)
[ 0.210816] ACPI: Skipping parse of AML opcode: Method (0x0014)
[ 0.210817] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.TPLD], AE_ALREADY_EXISTS (20181213/dswload2-324)
[ 0.210820] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221)
[ 0.210822] ACPI: Skipping parse of AML opcode: Method (0x0014)
[ 0.210823] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.GUPC], AE_ALREADY_EXISTS (20181213/dswload2-324)
...

Full output of many AE_ALREADY_EXISTS in attached dmesg. I am running v5.0.0+ (only change is the patch for the hid error reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818547 )