ACPI Problems? Bug?

My KVMs fail to start sometimes and it only works if I re-try it several times.
I am using the latest Proxmox server, installed with ISO.


I have found the several warnings in dmesg:

dmesg | grep ACPI


BIOS-e820: 00000000cca9e000 - 00000000ccaaf000 (ACPI data)
BIOS-e820: 00000000ccaaf000 - 00000000ccbd4000 (ACPI NVS)
BIOS-e820: 00000000cd7f5000 - 00000000cd838000 (ACPI NVS)
ACPI: RSDP 00000000000f0490 00024 (v02 ALASKA)
ACPI: XSDT 00000000ccaa1078 0006C (v01 ALASKA A M I 01072009 AMI 00010013)
ACPI: FACP 00000000ccaac560 0010C (v05 ALASKA A M I 01072009 AMI 00010013)
ACPI Warning: FADT (revision 5) is longer than ACPI 2.0 version, truncating leng th 0x10C to 0xF4 (20090903/tbfadt-288)
ACPI: DSDT 00000000ccaa1180 0B3D9 (v02 ALASKA A M I 00000022 INTL 20051117)
ACPI: FACS 00000000ccbd2080 00040
ACPI: APIC 00000000ccaac670 00092 (v03 ALASKA A M I 01072009 AMI 00010013)
ACPI: FPDT 00000000ccaac708 00044 (v01 ALASKA A M I 01072009 AMI 00010013)
ACPI: MCFG 00000000ccaac750 0003C (v01 ALASKA A M I 01072009 MSFT 00000097)
ACPI: HPET 00000000ccaac790 00038 (v01 ALASKA A M I 01072009 AMI. 00000005)
ACPI: SSDT 00000000ccaac7c8 0036D (v01 SataRe SataTabl 00001000 INTL 20091112)
ACPI: SSDT 00000000ccaacb38 009AA (v01 PmRef Cpu0Ist 00003000 INTL 20051117)
ACPI: SSDT 00000000ccaad4e8 00A92 (v01 PmRef CpuPm 00003000 INTL 20051117)
ACPI: DMAR 00000000ccaadfd8 000B0 (v01 INTEL SNB 00000001 INTL 00000001)
ACPI: Local APIC address 0xfee00000
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
ACPI: LAPIC (acpi_id[0x05] lapic_id[0x01] enabled)
ACPI: LAPIC (acpi_id[0x06] lapic_id[0x03] enabled)
ACPI: LAPIC (acpi_id[0x07] lapic_id[0x05] enabled)
ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] enabled)
ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x8086a701 base: 0xfed00000
ACPI: Core revision 20090903
PM: Registering ACPI NVS region at ccaaf000 (1200128 bytes)
PM: Registering ACPI NVS region at cd7f5000 (274432 bytes)
ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
ACPI: bus type pci registered
ACPI: EC: Look up EC in DSDT
ACPI: Executed 1 blocks of module-level executable AML code
ACPI Error (psargs-0359): [RAMB] Namespace lookup failure, AE_NOT_FOUND
ACPI Exception: AE_NOT_FOUND, Could not execute arguments for [RAMW] (Region) (2 0090903/nsinit-347)
ACPI: Interpreter enabled
ACPI: (supports S0 S3 S4 S5)
ACPI: Using IOAPIC for interrupt routing
ACPI: Power Resource [FN00] (off)
ACPI: Power Resource [FN01] (off)
ACPI: Power Resource [FN02] (off)
ACPI: Power Resource [FN03] (off)
ACPI: Power Resource [FN04] (off)
ACPI: No dock devices found.
PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and repo rt a bug
ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-3e])
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP01._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEG0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP05._PRT]
pci0000:00: Requesting ACPI _OSC control (0x1d)
pci0000:00: ACPI _OSC control (0x18) granted
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 *4 5 6 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 *5 6 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 10 11 12 14 15)
PCI: Using ACPI for IRQ routing
pnp: PnP ACPI init
ACPI: bus type pnp registered
pnp 00:00: Plug and Play ACPI device, IDs PNP0a08 PNP0a03 (active)
pnp 00:01: Plug and Play ACPI device, IDs PNP0c01 (active)
pnp 00:02: Plug and Play ACPI device, IDs PNP0200 (active)
pnp 00:03: Plug and Play ACPI device, IDs INT0800 (active)
pnp 00:04: Plug and Play ACPI device, IDs PNP0103 (active)
pnp 00:05: Plug and Play ACPI device, IDs PNP0c02 (active)
pnp 00:06: Plug and Play ACPI device, IDs PNP0b00 (active)
pnp 00:07: Plug and Play ACPI device, IDs INT3f0d PNP0c02 (active)
pnp 00:08: Plug and Play ACPI device, IDs PNP0c02 (active)
pnp 00:09: Plug and Play ACPI device, IDs PNP0c02 (active)
pnp 00:0a: Plug and Play ACPI device, IDs PNP0c04 (active)
pnp 00:0b: Plug and Play ACPI device, IDs PNP0303 PNP030b (active)
pnp 00:0c: Plug and Play ACPI device, IDs PNP0c02 (active)
pnp 00:0d: Plug and Play ACPI device, IDs PNP0c01 (active)
pnp: PnP ACPI: found 14 devices
ACPI: ACPI bus type pnp unregistered
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
ACPI: Power Button [PWRB]
ACPI: Power Button [PWRF]
ACPI: Fan [FAN0] (off)
ACPI: Fan [FAN1] (off)
ACPI: Fan [FAN2] (off)
ACPI: Fan [FAN3] (off)
ACPI: Fan [FAN4] (off)
ACPI: acpi_idle yielding to intel_idleACPI: SSDT 00000000cca4b018 0083B (v01 Pm Ref Cpu0Cst 00003001 INTL 20051117)
ACPI: SSDT 00000000cca4ca98 00303 (v01 PmRef ApIst 00003000 INTL 20051117)
ACPI: SSDT 00000000cca4dc18 00119 (v01 PmRef ApCst 00003000 INTL 20051117)
ACPI: Thermal Zone [TZ00] (28 C)
ACPI: Thermal Zone [TZ01] (30 C)
ata1.00: ACPI _SDD failed (AE 0x5)
ata2.00: ACPI _SDD failed (AE 0x5)
ata1.00: ACPI _SDD failed (AE 0x5)
ata1.00: ACPI: failed the second time, disabled
ata2.00: ACPI _SDD failed (AE 0x5)
ata2.00: ACPI: failed the second time, disabled
ACPI: resource 0000:00:1f.3 [io 0xf040-0xf05f] conflicts with ACPI region SMBI [io 0xf040-0xf04f]
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)

----

dmesg | grep Warning
ACPI Warning: FADT (revision 5) is longer than ACPI 2.0 version, truncating length 0x10C to 0xF4 (20090903/tbfadt-288)



Any suggestions?