I executed instructions 1 to 3 of https://01.org/linux-acpi/utilities in an attempt to understand the failure msg mentioned above. The generated files from instructions 1 to 3 are attached. SSDT 2,3,4 & 6 were dissembled with reference to DSDT, e.g. $ iasl -e dsdt.dat -d ssdt2.dat, and DSDT.dat was dissembled with reference to SSDT*.dat.
My findings: 1. from acpidump.out, SB_PCI0XHC_RHUBHS11 is refer to in the 5th SSDT table. 0340: 88 55 48 53 44 0A 09 00 0A 0A 10 3C 5C 2F 05 5F .UHSD......<\/._ 0350: 53 42 5F 50 43 49 30 58 48 43 5F 52 48 55 42 48 SB_PCI0XHC_RHUBH 0360: 53 31 31 14 0C 5F 55 50 43 00 A4 47 55 50 43 01 S11.._UPC..GUPC. 0370: 14 16 5F 50 4C 44 00 A4 47 50 4C 44 83 88 55 48 .._PLD..GPLD..UH 0380: 53 44 0A 0A 00 0A 0B 10 3C 5C 2F 05 5F 53 42 5F SD......<\/._SB_ 2.From SSDT5.dat, this file contains instructions for INTEL Table ID "xh_rvp08". It seems to be instructions for all \_SB.PCI0.XHC.RHUB devices. Specifically for \_SB.PCI0.XHC.RHUB.HS11, it is to return information concerning the USB Port Capabilities _UPC and Physical Location of Device _PLD (details of these is given in http://www.acpi.info/DOWNLOADS/ACPI_5_Errata%20A.pdf) : Scope (\_SB.PCI0.XHC.RHUB.HS11) { Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities { Return (GUPC (One)) } Method (_PLD, 0, NotSerialized) // _PLD: Physical Location of Device { Return (GPLD (DerefOf (UHSD [0x0A]), 0x0B)) } } 3. During $ iasl -e ssdt*.dat -d dsdt.dat, the resulting file dsdt.dsl warned: * iASL Warning: There were 19 external control methods found during * disassembly, but only 10 were resolved (9 unresolved). I tried $ iasl -e ssdt*.dat facp.dat -d dsdt.dat, because facp.dat was the only other aml type file provided by acpidump, by this command created a lot ACPI ERRORs and finally resulted in "Segmentation fault (core dumped)". There is a command to cause the objects defined in HS11 to be created relative to a new location _SB.PCI0.XHC.RHUB in the namespace under certain condition. If (PCHV () == SPTH) { Scope (_SB.PCI0.XHC.RHUB) { Device (HS11) { Name (_ADR, 0x0B) // _ADR: Address } 4. "$ iasl -sa dsdt.dsl" reported 3 errors. Intel ACPI Component Architecture ASL+ Optimizing Compiler version 20160422-64 Copyright (c) 2000 - 2016 Intel Corporation Compiler aborting due to parser-detected syntax error(s) dsdt.dsl 14493: Arg1 Error 6126 - ^ syntax error, unexpected PARSEOP_ARG1 dsdt.dsl 17932: } Error 6126 - ^ syntax error, unexpected '}' dsdt.dsl 33570: Error 6126 - syntax error, unexpected $end and premature End-Of-File ASL Input: dsdt.dsl - 33570 lines, 1067589 bytes, 16115 keywords ASM Source: dsdt.asm - 193 bytes Compilation complete. 3 Errors, 0 Warnings, 0 Remarks, 0 Optimizations ** Attachment added: "acpidump.out files e.g. DSDT, SSDTs, etc" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584407/+attachment/4668138/+files/acpidump.tar.gz -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1584407 Title: Ubuntu 16.04 LTS --> Kernal --> ACPI Errors: Namespace lookup failure and 1 table load failures Status in linux package in Ubuntu: Confirmed Bug description: [ 0.016192] ACPI Error: [\_SB_.PCI0.XHC_.RHUB.HS11] Namespace lookup failure, AE_NOT_FOUND (20150930/dswload-210) [ 0.016195] ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20150930/psobject-227) [ 0.016222] ACPI Exception: AE_NOT_FOUND, (SSDT:xh_rvp08) while loading table (20150930/tbxfload-193) [ 0.021348] ACPI Error: 1 table load failures, 7 successful (20150930/tbxfload-214) I have noticed this ACPI error persisting in my syslog and dmesg. Based on what I have learnt from ACPI, acpitool -w and lspci, I think the error is related to Namespaces provided in the DDST on \_SB_.PCI0.XHC_.RHUB.HS11, which I think concerns the Root → System bus tree → PCI bus → USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) in my system. I have not found what .RHUB.HS11 refers too. I have tried changing my UEFI USB settings but to no avail. Appreciate help to fix this bug. I reported it as a question https://answers.launchpad.net/ubuntu/+question/293489 and to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553690. https://launchpad.net/~penalvch advice me to make this ubuntu-bug report. $ lsb_release -rd Description: Ubuntu 16.04 LTS Release: 16.04 $ uname -r 4.4.0-22-generic MB Bios: ASUS z170m-plus version 0704 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-22-generic 4.4.0-22.40 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: sunbear1604 1905 F.... pulseaudio /dev/snd/controlC0: sunbear1604 1905 F.... pulseaudio CurrentDesktop: Unity Date: Sun May 22 07:48:53 2016 HibernationDevice: RESUME=UUID=c1eef599-9978-461e-a399-a04370b6ae59 InstallationDate: Installed on 2016-05-01 (20 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IwConfig: enp0s31f6 no wireless extensions. lo no wireless extensions. MachineType: System manufacturer System Product Name ProcFB: 0 EFI VGA 1 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed root=UUID=69a55da3-4a70-4239-8e7e-2430ceac525d ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-22-generic N/A linux-backports-modules-4.4.0-22-generic N/A linux-firmware 1.157 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/18/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0704 dmi.board.asset.tag: Default string dmi.board.name: Z170M-PLUS dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0704:bd02/18/2016:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170M-PLUS:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584407/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp