These object names look like "PCI Interrupt Link Device" but they are not declared (further analysis requires acpidump log - sudo acpidump > acpi.log). This is a BIOS bug which kernel can do little to help.
Fortunately, if you don't observe any obvious failures, these errors can be ignored -- 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/1892909 Title: ACPI Error Status in linux package in Ubuntu: Confirmed Bug description: 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux ----- [ 0.297458] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297464] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297468] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297472] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297482] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297485] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297489] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297492] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297502] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297506] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297509] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297512] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297523] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297526] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297529] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297533] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297543] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297546] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297550] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297553] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297563] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297566] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297570] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297573] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297583] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297586] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297590] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297593] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297603] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297607] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297610] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297614] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297623] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297627] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297630] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297634] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297644] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297647] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297650] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297654] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297458] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297464] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297468] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297472] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297482] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297485] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297489] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297492] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297502] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297506] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297509] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297512] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297523] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297526] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297529] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297533] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297543] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297546] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297550] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297553] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297563] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297566] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297570] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297573] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297583] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297586] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297590] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297593] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297603] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297607] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297610] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297614] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297623] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297627] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297630] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297634] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297644] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297647] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297650] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297654] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297458] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297464] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297468] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297472] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297482] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297485] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297489] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297492] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297502] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297506] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297509] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297512] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297523] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297526] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297529] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297533] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297543] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297546] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297550] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297553] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297563] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297566] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297570] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297573] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297583] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297586] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297590] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297593] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297603] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297607] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297610] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297614] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297623] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297627] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297630] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297634] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297644] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297647] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297650] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297654] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297458] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297464] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297468] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297472] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297482] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297485] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297489] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297492] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297502] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297506] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297509] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297512] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297523] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297526] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297529] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297533] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297543] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297546] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297550] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297553] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297563] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297566] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297570] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297573] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297583] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297586] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297590] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297593] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297603] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297607] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297610] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297614] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297623] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) [ 0.297627] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297630] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297634] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297644] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438) [ 0.297647] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438) [ 0.297650] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438) [ 0.297654] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438) ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-42-generic 5.4.0-42.46 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: esgaal 1337 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Aug 25 14:02:58 2020 InstallationDate: Installed on 2020-08-25 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) IwConfig: enp2s0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. GA-A75M-S2V ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic root=UUID=96c02ad8-da95-466e-b7d3-c0fd3ba24883 ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Daemon not responding. RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187.2 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/15/2011 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F1 dmi.board.name: GA-A75M-S2V dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF1:bd06/15/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-A75M-S2V:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-A75M-S2V:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-A75M-S2V dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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