Bug still present on Ubuntu 16.04 LTS, running on an HP Elitebook 850
G2. Ubuntu is installed on an SSD, and I noticed that there were long
delays that the hard drive light wasn't active. A check of dmesg showed
two ~6 second delays in the boot process, both on the same problem:
...SNIP...
[0.141122] ACPI: bus type PCI registered
[0.141123] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[0.141183] PCI: MMCONFIG for domain [bus 00-ff] at [mem
0xe000-0xefff] (base 0xe000)
[0.141184] PCI: not using MMCONFIG
[0.141185] PCI: Using configuration type 1 for base access
[0.157183] HugeTLB registered 1 GB page size, pre-allocated 0 pages
[0.157184] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[0.157406] ACPI: Added _OSI(Module Device)
[0.157406] ACPI: Added _OSI(Processor Device)
[0.157407] ACPI: Added _OSI(3.0 _SCP Extensions)
[0.157408] ACPI: Added _OSI(Processor Aggregator Device)
[0.164672] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[0.169886] ACPI: Dynamic OEM Table Load:
[0.169894] ACPI: SSDT 0xA08A05621000 0003F3 (v02 PmRef Cpu0Cst
3001 INTL 20130927)
[0.170667] ACPI: Dynamic OEM Table Load:
[0.170674] ACPI: SSDT 0xA08A055F8800 0005DB (v02 PmRef ApIst
3000 INTL 20130927)
[0.171490] ACPI: Dynamic OEM Table Load:
[0.171495] ACPI: SSDT 0xA08A0568AA00 000119 (v02 PmRef ApCst
3000 INTL 20130927)
[0.172854] ACPI : EC: EC started
[6.094429] ACPI: Interpreter enabled
[6.094459] ACPI: (supports S0 S3 S4 S5)
[6.094460] ACPI: Using IOAPIC for interrupt routing
[6.094480] PCI: MMCONFIG for domain [bus 00-ff] at [mem
0xe000-0xefff] (base 0xe000)
[6.094904] PCI: MMCONFIG at [mem 0xe000-0xefff] reserved in ACPI
motherboard resources
[6.094917] PCI: Using host bridge windows from ACPI; if necessary, use
"pci=nocrs" and report a bug
[6.096366] ACPI: Power Resource [APPR] (off)
[6.098669] ACPI: Power Resource [COMP] (on)
[6.098863] ACPI: Power Resource [LPP] (on)
[6.099525] ACPI: Power Resource [PXP2] (on)
[6.218841] ACPI: Power Resource [WRST] (on)
[6.221957] ACPI: PCI Root Bridge [PCI0] (domain [bus 00-fe])
[6.221962] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM
Segments MSI]
[6.223644] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER
PCIeCapability]
[6.223645] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS
configuration
[6.224136] PCI host bridge to bus :00
[6.224138] pci_bus :00: root bus resource [io 0x-0x0cf7 window]
[6.224139] pci_bus :00: root bus resource [io 0x0d00-0x window]
[6.224140] pci_bus :00: root bus resource [mem 0x000a-0x000b
window]
[6.224141] pci_bus :00: root bus resource [mem 0xae80-0xdfff
window]
[6.224144] pci_bus :00: root bus resource [mem 0xf000-0xfed3
window]
[6.224145] pci_bus :00: root bus resource [mem 0xfed45000-0xfedf
window]
[6.224146] pci_bus :00: root bus resource [mem 0xfee01000-0x
window]
[6.224148] pci_bus :00: root bus resource [bus 00-fe]
[6.224155] pci :00:00.0: [8086:1604] type 00 class 0x06
[6.224278] pci :00:02.0: [8086:1616] type 00 class 0x03
[6.224288] pci :00:02.0: reg 0x10: [mem 0xc000-0xc0ff 64bit]
[6.224294] pci :00:02.0: reg 0x18: [mem 0xb000-0xbfff 64bit
pref]
[6.224298] pci :00:02.0: reg 0x20: [io 0x5000-0x503f]
[6.224429] pci :00:03.0: [8086:160c] type 00 class 0x040300
[6.224436] pci :00:03.0: reg 0x10: [mem 0xc133-0xc1333fff 64bit]
[6.224571] pci :00:14.0: [8086:9cb1] type 00 class 0x0c0330
[6.224584] pci :00:14.0: reg 0x10: [mem 0xc132-0xc132 64bit]
[6.224636] pci :00:14.0: PME# supported from D3hot D3cold
[6.224702] pci :00:14.0: System wakeup disabled by ACPI
[6.224739] pci :00:16.0: [8086:9cba] type 00 class 0x078000
[6.224756] pci :00:16.0: reg 0x10: [mem 0xc133b000-0xc133b01f 64bit]
[6.224828] pci :00:16.0: PME# supported from D0 D3hot D3cold
[6.224931] pci :00:19.0: [8086:15a2] type 00 class 0x02
[6.224944] pci :00:19.0: reg 0x10: [mem 0xc130-0xc131]
[6.224951] pci :00:19.0: reg 0x14: [mem 0xc133d000-0xc133dfff]
[6.224958] pci :00:19.0: reg 0x18: [io 0x5080-0x509f]
[6.225017] pci :00:19.0: PME# supported from D0 D3hot D3cold
[6.225083] pci :00:19.0: System wakeup disabled by ACPI
[6.225117] pci :00:1b.0: [8086:9ca0] type 00 class 0x040300
[6.225131] pci :00:1b.0: reg 0x10: [mem 0xc1334000-0xc1337fff 64bit]
[6.225182] pci :00:1b.0: PME# supported from D0 D3hot D3cold
[6.225279] pci :00:1c.0: [8086:9c90] type 01 class 0x060400
[6.225345] pci :00:1c.0: PME# supported from D0 D3hot D3cold
[