Ubuntu 18.04 видит только один CPU на X10SDV

У меня есть Ubuntu 18.04

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.1 LTS
Release:    18.04
Codename:   bionic


# uname -a
Linux kb 4.15.0-34-generic #37-Ubuntu SMP Mon Aug 27 15:21:48 UTC 2018 
x86_64 x86_64 x86_64 GNU/Linux

Это установлено на Супермикро X10SDV-4C-TLN2F.

Я вижу только один ЦП из 8, я предполагаю для наблюдения. Это может работать правильно над этой машиной, когда я переместил эту машину от Debian до Ubuntu, и на Debian я видел эти 8 центральных процессоров в тех же самых аппаратных средствах. Единственная разница - то, что затем ОС была на жестком диске ZFS (который не является прекрасной идеей, но служил мне хорошо...), и теперь ОС находится на новом SSD.

# lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              1
On-line CPU(s) list: 0
Thread(s) per core:  1
Core(s) per socket:  1
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               86
Model name:          Intel(R) Xeon(R) CPU D-1518 @ 2.20GHz
Stepping:            3
CPU MHz:             800.134
CPU max MHz:         2200,0000
CPU min MHz:         800,0000
BogoMIPS:            4399.64
Virtualization:      VT-x
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            6144K
NUMA node0 CPU(s):   0
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall 
nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl 
xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl 
vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 
x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm 
abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single pti 
intel_ppin ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid 
fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a 
rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total 
cqm_mbm_local dtherm arat pln pts flush_l1d

Я вхожу в dmesg следующее:

[    0.000000] Linux version 4.15.0-34-generic (buildd@lgw01-amd64-047) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #37-Ubuntu SMP Mon Aug 27 15:21:48 UTC 2018 (Ubuntu 4.15.0-34.37-generic 4.15.18)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=5c533343-893f-4dbd-8dbe-2bf1eedeb960 ro quiet nr_cpus=8 splash vt.handoff=1
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000796ebfff] usable
[    0.000000] BIOS-e820: [mem 0x00000000796ec000-0x00000000798bafff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000798bb000-0x0000000079a26fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000079a27000-0x0000000079e57fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000079e58000-0x000000007bd4cfff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007bd4d000-0x000000007bdb0fff] type 20
[    0.000000] BIOS-e820: [mem 0x000000007bdb1000-0x000000007bdb1fff] usable
[    0.000000] BIOS-e820: [mem 0x000000007bdb2000-0x000000007be37fff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007be38000-0x000000007bffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000080000000-0x000000008fffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.40 by American Megatrends
[    0.000000] efi:  ACPI=0x79ae7000  ACPI 2.0=0x79ae7000  ESRT=0x7bb14e18 
[    0.000000] secureboot: Secure boot could not be determined (mode 0)
[    0.000000] DMI not present or invalid.
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] e820: last_pfn = 0x7c000 max_arch_pfn = 0x400000000
[    0.000000] MTRR default type: write-back
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-BFFFF uncachable
[    0.000000]   C0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000080000000 mask 3FFF80000000 uncachable
[    0.000000]   1 base 380000000000 mask 3FC000000000 uncachable
[    0.000000]   2 base 0000E0000000 mask 3FFFF0000000 write-through
[    0.000000]   3 base 0000F0000000 mask 3FFFFE000000 write-through
[    0.000000]   4 base 0000F2000000 mask 3FFFFFC00000 write-through
[    0.000000]   5 base 0000F2400000 mask 3FFFFFE00000 write-through
[    0.000000]   6 base 0000F2600000 mask 3FFFFFF00000 write-through
[    0.000000]   7 disabled
[    0.000000]   8 disabled
[    0.000000]   9 disabled
[    0.000000] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
[    0.000000] esrt: Reserving ESRT space from 0x000000007bb14e18 to 0x000000007bb14e50.
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Base memory trampoline at     [        (ptrval)] 96000 size 24576
[    0.000000] Using GB pages for direct mapping
[    0.000000] BRK [0x4753e000, 0x4753efff] PGTABLE
[    0.000000] BRK [0x4753f000, 0x4753ffff] PGTABLE
[    0.000000] BRK [0x47540000, 0x47540fff] PGTABLE
[    0.000000] BRK [0x47541000, 0x47541fff] PGTABLE
[    0.000000] BRK [0x47542000, 0x47542fff] PGTABLE
[    0.000000] BRK [0x47543000, 0x47543fff] PGTABLE
[    0.000000] BRK [0x47544000, 0x47544fff] PGTABLE
[    0.000000] BRK [0x47545000, 0x47545fff] PGTABLE
[    0.000000] BRK [0x47546000, 0x47546fff] PGTABLE
[    0.000000] BRK [0x47547000, 0x47547fff] PGTABLE
[    0.000000] RAMDISK: [mem 0x1da3a000-0x21765fff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: RSDP 0x0000000079AE7000 000024 (v02 SUPERM)
[    0.000000] ACPI: XSDT 0x0000000079AE7080 00007C (v01 SUPERM SMCI--MB 01072009 AMI  00010013)
[    0.000000] ACPI: FACP 0x0000000079AFF8A8 00010C (v05 SUPERM SMCI--MB 01072009 AMI  00010013)
[    0.000000] ACPI: DSDT 0x0000000079AE7190 018716 (v02 SUPERM SMCI--MB 01072009 INTL 20091013)
[    0.000000] ACPI: FACS 0x0000000079E56F80 000040
[    0.000000] ACPI: APIC 0x0000000079AFF9B8 00004C (v03 SUPERM SMCI--MB 01072009 AMI  00010013)
[    0.000000] ACPI: FPDT 0x0000000079AFFA08 000044 (v01 SUPERM SMCI--MB 01072009 AMI  00010013)
[    0.000000] ACPI: FIDT 0x0000000079AFFA50 00009C (v01 SUPERM SMCI--MB 01072009 AMI  00010013)
[    0.000000] ACPI: SPMI 0x0000000079AFFAF0 000041 (v05 SUPERM SMCI--MB 00000000 AMI. 00000000)
[    0.000000] ACPI: MCFG 0x0000000079AFFB38 00003C (v01 SUPERM SMCI--MB 01072009 MSFT 00000097)
[    0.000000] ACPI: UEFI 0x0000000079AFFB78 000042 (v01                 00000000      00000000)
[    0.000000] ACPI: DBG2 0x0000000079AFFBC0 000072 (v00 SUPERM SMCI--MB 00000000 INTL 20091013)
[    0.000000] ACPI: HPET 0x0000000079AFFC38 000038 (v01 SUPERM SMCI--MB 00000001 INTL 20091013)
[    0.000000] ACPI: WDDT 0x0000000079AFFC70 000040 (v01 SUPERM SMCI--MB 00000000 INTL 20091013)
[    0.000000] ACPI: SSDT 0x0000000079AFFCB0 00EDCB (v01 AMI    PmMgt    00000001 INTL 20120913)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000007bffffff]
[    0.000000] NODE_DATA(0) allocated [mem 0x799fc000-0x79a26fff]
[    0.000000] tsc: Fast TSC calibration using PIT
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.000000]   DMA32    [mem 0x0000000001000000-0x000000007bffffff]
[    0.000000]   Normal   empty
[    0.000000]   Device   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009ffff]
[    0.000000]   node   0: [mem 0x0000000000100000-0x00000000796ebfff]
[    0.000000]   node   0: [mem 0x00000000798bb000-0x0000000079a26fff]
[    0.000000]   node   0: [mem 0x000000007bdb1000-0x000000007bdb1fff]
[    0.000000]   node   0: [mem 0x000000007be38000-0x000000007bffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007bffffff]
[    0.000000] On node 0 totalpages: 498112
[    0.000000]   DMA zone: 64 pages used for memmap
[    0.000000]   DMA zone: 27 pages reserved
[    0.000000]   DMA zone: 3999 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 7872 pages used for memmap
[    0.000000]   DMA32 zone: 494113 pages, LIFO batch:31
[    0.000000] Reserved but unavailable: 98 pages
[    0.000000] ACPI: PM-Timer IO Port: 0x408
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: No LAPIC entries present
[    0.000000] Using ACPI for processor (LAPIC) configuration information
[    0.000000] ACPI: HPET id: 0x8086a701 base: 0xfed00000
[    0.000000] smpboot: Boot CPU (id 0) not listed by BIOS
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[    0.000000] PM: Registered nosave memory: [mem 0x796ec000-0x798bafff]
[    0.000000] PM: Registered nosave memory: [mem 0x79a27000-0x79e57fff]
[    0.000000] PM: Registered nosave memory: [mem 0x79e58000-0x7bd4cfff]
[    0.000000] PM: Registered nosave memory: [mem 0x7bd4d000-0x7bdb0fff]
[    0.000000] PM: Registered nosave memory: [mem 0x7bdb2000-0x7be37fff]
[    0.000000] e820: [mem 0x90000000-0xfed1bfff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[    0.000000] random: get_random_bytes called from start_kernel+0x99/0x4fd with crng_init=0
[    0.000000] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:1 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] percpu: Embedded 46 pages/cpu @        (ptrval) s151552 r8192 d28672 u2097152
[    0.000000] pcpu-alloc: s151552 r8192 d28672 u2097152 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 490149
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=5c533343-893f-4dbd-8dbe-2bf1eedeb960 ro quiet nr_cpus=8 splash vt.handoff=1
[    0.000000] Calgary: detecting Calgary via BIOS EBDA area
[    0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
[    0.000000] Memory: 1493264K/1992448K available (12300K kernel code, 2471K rwdata, 4244K rodata, 2408K init, 2416K bss, 499184K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Kernel/User page tables isolation: enabled
[    0.000000] ftrace: allocating 39147 entries in 153 pages
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=1.
[    0.000000]  Tasks RCU enabled.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 524544, nr_irqs: 32, preallocated irqs: 16
[    0.000000] vt handoff: transparent VT on vt#1
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] ACPI: Core revision 20170831
[    0.000000] ACPI: 2 ACPI AML tables successfully acquired and loaded
[    0.000000] ACPI: setting ELCR to 0200 (from 0000)
[    0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 133484882848 ns
[    0.000000] hpet clockevent registered
[    0.000000] APIC: Switch to symmetric I/O mode setup
[    0.000000] x2apic: IRQ remapping doesn't support X2APIC mode
[    0.000000] tsc: Fast TSC calibration using PIT
[    0.004000] tsc: Detected 2199.822 MHz processor
[    0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4399.64 BogoMIPS (lpj=8799288)
[    0.004000] pid_max: default: 32768 minimum: 301
[    0.004000] Security Framework initialized
[    0.004000] Yama: becoming mindful.
[    0.004000] AppArmor: AppArmor initialized
[    0.004000] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.004000] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.004000] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.004000] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.004000] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.004000] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)
[    0.004000] mce: CPU supports 22 MCE banks
[    0.004000] CPU0: Thermal monitoring enabled (TM1)
[    0.004000] process: using mwait in idle threads
[    0.004000] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[    0.004000] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
[    0.004000] Spectre V2 : Mitigation: Full generic retpoline
[    0.004000] Spectre V2 : Spectre v2 mitigation: Enabling Indirect Branch Prediction Barrier
[    0.004000] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    0.004000] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp
[    0.030081] Freeing SMP alternatives memory: 36K
[    0.053603] TSC deadline timer enabled
[    0.053607] smpboot: CPU0: Intel(R) Xeon(R) CPU D-1518 @ 2.20GHz (family: 0x6, model: 0x56, stepping: 0x3)
[    0.053754] Performance Events: PEBS fmt2+, Broadwell events, 16-deep LBR, full-width counters, Intel PMU driver.
[    0.053813] ... version:                3
[    0.053815] ... bit width:              48
[    0.053816] ... generic registers:      4
[    0.053818] ... value mask:             0000ffffffffffff
[    0.053820] ... max period:             00007fffffffffff
[    0.053821] ... fixed-purpose events:   3
[    0.053823] ... event mask:             000000070000000f
[    0.053895] Hierarchical SRCU implementation.
[    0.055986] NMI watchdog: Enabled. Permanently consumes one hw-PMU counter.
[    0.056000] smp: Bringing up secondary CPUs ...
[    0.056000] smp: Brought up 1 node, 1 CPU
[    0.056000] smpboot: Max logical packages: 1
[    0.056000] smpboot: Total of 1 processors activated (4399.64 BogoMIPS)
[    0.056363] devtmpfs: initialized
[    0.056492] x86/mm: Memory block size: 128MB
[    0.057069] evm: security.selinux
[    0.057071] evm: security.SMACK64
[    0.057072] evm: security.SMACK64EXEC
[    0.057073] evm: security.SMACK64TRANSMUTE
[    0.057075] evm: security.SMACK64MMAP
[    0.057076] evm: security.apparmor
[    0.057077] evm: security.ima
[    0.057079] evm: security.capability
[    0.057204] PM: Registering ACPI NVS region [mem 0x79a27000-0x79e57fff] (4395008 bytes)
[    0.057477] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.057487] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.057563] pinctrl core: initialized pinctrl subsystem
[    0.057761] RTC time: 22:13:23, date: 09/20/18
[    0.057977] NET: Registered protocol family 16
[    0.058175] audit: initializing netlink subsys (disabled)
[    0.058476] cpuidle: using governor ladder
[    0.058479] cpuidle: using governor menu
[    0.058578] ACPI: bus type PCI registered
[    0.058581] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.058646] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
[    0.058652] PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820
[    0.058688] PCI: Using configuration type 1 for base access
[    0.061750] audit: type=2000 audit(1537481603.056:1): state=initialized audit_enabled=0 res=1
[    0.061891] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[    0.061894] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.062303] ACPI: Added _OSI(Module Device)
[    0.062306] ACPI: Added _OSI(Processor Device)
[    0.062308] ACPI: Added _OSI(3.0 _SCP Extensions)
[    0.062310] ACPI: Added _OSI(Processor Aggregator Device)
[    0.062312] ACPI: Added _OSI(Linux-Dell-Video)
[    0.062315] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.219316] ACPI: Interpreter enabled
[    0.219352] ACPI: (supports S0 S4 S5)
[    0.219355] ACPI: Using PIC for interrupt routing
[    0.219428] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    0.220407] ACPI: Enabled 5 GPEs in block 00 to 3F
[    0.319963] ACPI: PCI Root Bridge [UNC0] (domain 0000 [bus ff])
[    0.319975] acpi PNP0A03:03: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[    0.321903] acpi PNP0A03:03: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability]
[    0.322026] PCI host bridge to bus 0000:ff
[    0.322032] pci_bus 0000:ff: root bus resource [bus ff]
[    0.322060] pci 0000:ff:0b.0: [8086:6f81] type 00 class 0x088000
[    0.322193] pci 0000:ff:0b.1: [8086:6f36] type 00 class 0x110100
[    0.322307] pci 0000:ff:0b.2: [8086:6f37] type 00 class 0x110100
[    0.322417] pci 0000:ff:0b.3: [8086:6f76] type 00 class 0x088000
[    0.322533] pci 0000:ff:0c.0: [8086:6fe0] type 00 class 0x088000
[    0.322644] pci 0000:ff:0c.1: [8086:6fe1] type 00 class 0x088000
[    0.322752] pci 0000:ff:0c.2: [8086:6fe2] type 00 class 0x088000
[    0.322859] pci 0000:ff:0c.3: [8086:6fe3] type 00 class 0x088000
[    0.322976] pci 0000:ff:0f.0: [8086:6ff8] type 00 class 0x088000
[    0.323086] pci 0000:ff:0f.4: [8086:6ffc] type 00 class 0x088000
[    0.323193] pci 0000:ff:0f.5: [8086:6ffd] type 00 class 0x088000
[    0.323304] pci 0000:ff:0f.6: [8086:6ffe] type 00 class 0x088000
[    0.323416] pci 0000:ff:10.0: [8086:6f1d] type 00 class 0x088000
[    0.323525] pci 0000:ff:10.1: [8086:6f34] type 00 class 0x110100
[    0.323636] pci 0000:ff:10.5: [8086:6f1e] type 00 class 0x088000
[    0.323746] pci 0000:ff:10.6: [8086:6f7d] type 00 class 0x110100
[    0.323853] pci 0000:ff:10.7: [8086:6f1f] type 00 class 0x088000
[    0.323964] pci 0000:ff:12.0: [8086:6fa0] type 00 class 0x088000
[    0.324045] pci 0000:ff:12.1: [8086:6f30] type 00 class 0x110100
[    0.324168] pci 0000:ff:13.0: [8086:6fa8] type 00 class 0x088000
[    0.324288] pci 0000:ff:13.1: [8086:6f71] type 00 class 0x088000
[    0.324406] pci 0000:ff:13.2: [8086:6faa] type 00 class 0x088000
[    0.324523] pci 0000:ff:13.3: [8086:6fab] type 00 class 0x088000
[    0.324643] pci 0000:ff:13.4: [8086:6fac] type 00 class 0x088000
[    0.324761] pci 0000:ff:13.5: [8086:6fad] type 00 class 0x088000
[    0.324877] pci 0000:ff:13.6: [8086:6fae] type 00 class 0x088000
[    0.324993] pci 0000:ff:13.7: [8086:6faf] type 00 class 0x088000
[    0.325104] pci 0000:ff:14.0: [8086:6fb0] type 00 class 0x088000
[    0.325224] pci 0000:ff:14.1: [8086:6fb1] type 00 class 0x088000
[    0.325346] pci 0000:ff:14.2: [8086:6fb2] type 00 class 0x088000
[    0.325464] pci 0000:ff:14.3: [8086:6fb3] type 00 class 0x088000
[    0.325581] pci 0000:ff:14.4: [8086:6fbc] type 00 class 0x088000
[    0.325693] pci 0000:ff:14.5: [8086:6fbd] type 00 class 0x088000
[    0.325803] pci 0000:ff:14.6: [8086:6fbe] type 00 class 0x088000
[    0.325913] pci 0000:ff:14.7: [8086:6fbf] type 00 class 0x088000
[    0.326027] pci 0000:ff:15.0: [8086:6fb4] type 00 class 0x088000
[    0.326148] pci 0000:ff:15.1: [8086:6fb5] type 00 class 0x088000
[    0.326267] pci 0000:ff:15.2: [8086:6fb6] type 00 class 0x088000
[    0.326385] pci 0000:ff:15.3: [8086:6fb7] type 00 class 0x088000
[    0.326526] pci 0000:ff:1e.0: [8086:6f98] type 00 class 0x088000
[    0.326635] pci 0000:ff:1e.1: [8086:6f99] type 00 class 0x088000
[    0.326750] pci 0000:ff:1e.2: [8086:6f9a] type 00 class 0x088000
[    0.326860] pci 0000:ff:1e.3: [8086:6fc0] type 00 class 0x088000
[    0.326941] pci 0000:ff:1e.4: [8086:6f9c] type 00 class 0x088000
[    0.327059] pci 0000:ff:1f.0: [8086:6f88] type 00 class 0x088000
[    0.327171] pci 0000:ff:1f.2: [8086:6f8a] type 00 class 0x088000
[    0.329861] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 1/0x2 ignored.
[    0.329862] ACPI: Unable to map lapic to logical cpu number
[    0.331143] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 2/0x4 ignored.
[    0.331144] ACPI: Unable to map lapic to logical cpu number
[    0.332446] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 3/0x6 ignored.
[    0.332448] ACPI: Unable to map lapic to logical cpu number
[    0.333728] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 4/0x1 ignored.
[    0.333729] ACPI: Unable to map lapic to logical cpu number
[    0.335008] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 5/0x3 ignored.
[    0.335009] ACPI: Unable to map lapic to logical cpu number
[    0.336311] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 6/0x5 ignored.
[    0.336312] ACPI: Unable to map lapic to logical cpu number
[    0.337590] APIC: NR_CPUS/possible_cpus limit of 1 reached. Processor 7/0x7 ignored.
[    0.337591] ACPI: Unable to map lapic to logical cpu number
[    0.347574] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-fe])
[    0.347586] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[    0.349465] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability]
[    0.350433] PCI host bridge to bus 0000:00
[    0.350441] pci_bus 0000:00: root bus resource [io  0x0000-0x0cf7 window]
[    0.350445] pci_bus 0000:00: root bus resource [io  0x1000-0xffff window]
[    0.350449] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[    0.350453] pci_bus 0000:00: root bus resource [mem 0x90000000-0xfbffbfff window]
[    0.350458] pci_bus 0000:00: root bus resource [bus 00-fe]
...

Отметьте строки, содержащие APIC: NR_CPUS/possible_cpus limit of 1 reached который описывает хорошо (я предполагаю), проблема.

Мой /etc/default/grub:

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via 
VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to 
Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

Что я уже попробовал:

1. Включая nr_cpus=8 в GRUB_CMDLINE_LINUX_DEFAULT
2. Проверка, что ACPI включен в BIOS, а также любой другой возможности, связанной с BIOS.

Я могу также совместно использовать другие журналы (например, /var/log/kern.log) в случае необходимости.

Любая справка будет цениться для возвращения моих 7 недостающих центральных процессоров.

Спасибо и наилучшие пожелания,

Ран