I found the reason for error message. It was caused by my system BIOS setting. Motherboard: ASUS Z170M-Plus Driver: Z170M-PLUS BIOS 3301 updated 2017/03/02 (latest driver when posting this comment)
In BIOS main, I went to Advanced --> Platform Msc Configuration. In this page, I had to set: - PCI Express Native Power Management Enabled - Native ASPM Enabled Enabling the latter parameter allowed OS to managed ASPM while disabling it meant that BIOS managed ASPM of PCIe. In my case, Native ASPM was Disabled and this caused the error. [ 0.201657], acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability] now replaced [ 0.186376] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM $ dmesg | grep acpi [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x08] high edge lint[0x1]) [ 0.157543] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.200629] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI] [ 0.201657] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability] [ 0.209567] acpiphp: Slot [1] registered [ 0.209618] acpiphp: Slot [1-1] registered [ 0.234384] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns sunbear1604@Eliot:~$ dmesg | grep ASPM [ 0.200629] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI] -- 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/1349740 Title: acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM Status in Linux: Unknown Status in linux package in Ubuntu: Confirmed Bug description: [ 0.183201] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-6-generic 3.16.0-6.11 ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7 Uname: Linux 3.16.0-6-generic x86_64 ApportVersion: 2.14.4-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: caravena 2878 F.... pulseaudio CurrentDesktop: GNOME Date: Tue Jul 29 04:47:24 2014 HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87 InstallationDate: Installed on 2014-04-27 (92 days ago) InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-6-generic root=UUID=13144268-2374-4154-83f1-c35d81306190 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-6-generic N/A linux-backports-modules-3.16.0-6-generic N/A linux-firmware 1.132 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/15/2013 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P14AAJ dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: SAMSUNG_NP1234567890 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 530U3C/530U4C dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1349740/+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
