I have ZimaOS 1.6.1. Moved from a E3-1240v3 to a E3-1285Lv4. Issue is all the cores were detected on the E3-1240v3 but ZimaOS does not detect the cores on my E3-1285Lv4. I verified by rebooting into Linux Mint and it can see all cores.
This is not a BIOS/UEFI issue, nor a IPMI issue.
lscpu shows:
Xyzven@ZimaOS:~ ➜ $ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) CPU E3-1285L v4 @ 3.40GHz
CPU family: 6
Model: 71
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
Stepping: 1
CPU(s) scaling MHz: 97%
CPU max MHz: 3800.0000
CPU min MHz: 800.0000
BogoMIPS: 6799.97
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 nons
top_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowpref
etch cpuid_fault epb pti ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap intel_pt xsaveopt dtherm ida arat pln pts vnmi md
_clear flush_l1d
Virtualization features:
Virtualization: VT-x
Caches (sum of all):
L1d: 32 KiB (1 instance)
L1i: 32 KiB (1 instance)
L2: 256 KiB (1 instance)
L3: 6 MiB (1 instance)
L4: 128 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: KVM: Mitigation: Split huge pages
L1tf: Mitigation; PTE Inversion; VMX conditional cache flushes, SMT disabled
Mds: Mitigation; Clear CPU buffers; SMT disabled
Meltdown: Mitigation; PTI
Mmio stale data: Unknown: No mitigations
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Not affected
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines; IBPB conditional; IBRS_FW; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Srbds: Mitigation; Microcode
Tsx async abort: Mitigation; Clear CPU buffers; SMT disabled