What is the exact listed in your event logs? Share public link
The cryptic string is a standardized hardware identification string used by Windows operating systems to communicate directly with a computer's central processing unit (CPU). If you encounter this string in the Windows Device Manager under an "Unknown Device" warning, or see it listed in system crash dumps (BSOD logs), your operating system is communicating with a 3rd Generation Intel Core processor—better known by its architectural codename, Ivy Bridge .
┌───────────────────────────────────────────────────────────┐ │ Ivy Bridge Architecture │ ├─────────────────────────────┬─────────────────────────────┤ │ 3D Tri-Gate Transistors │ Transistors switch 37% │ │ (22nm Process node) │ faster at lower voltages │ ├─────────────────────────────┼─────────────────────────────┤ │ PCI Express 3.0 Support │ Doubles data throughput │ │ │ to 1 GB/s per lane │ ├─────────────────────────────┼─────────────────────────────┤ │ Intel HD Graphics 4000 │ Native DirectX 11 support │ │ │ and Quick Sync Video v2 │ └───────────────────────────────────────────────────────────┘
Let's break down the ID: . This is an ACPI-style Hardware ID (or _HID ). In practice, different OSes and logs may represent this in slightly different formats (e.g., ACPI\GenuineIntel_-_Intel64_Family_6_Model_58 ), but the core components are identical. acpi genuineintel---intel64-family-6-model-58
: The standard vendor string returned when a system calls the CPUID instruction on an Intel processor.
If your system reports family 6 model 58, here is what you actually own:
Which (e.g., Windows 10, Windows 11 via bypass) are you currently running? What is the exact listed in your event logs
Thus, the pattern is permanent. If you are writing scripts or log parsers that match this string, like:
At first glance, it resembles a fragment of a broken database entry or a debug string left in a hurry. However, for system administrators, firmware engineers, and Linux power users, this string tells a complete story. It is a handshake between three critical components of modern computing: (Advanced Configuration and Power Interface), the CPUID instruction, and the Linux kernel’s x86 architecture code .
If you ever encounter this string in your logs, take a moment to appreciate the decades of standards (ACPI, CPUID, x86-64) that silently work together—most of the time, perfectly. : The standard vendor string returned when a
The specific "stepping" or design revision for Ivy Bridge chips. 🛠 Why You Are Seeing This Identifier
A (Advanced Configuration and Power Interface) is an open standard that operating systems use for discovery, configuration, power management, and thermal regulation of hardware. When you see acpi prepended to a CPU identifier, it typically indicates that the ACPI driver or subsystem is printing or parsing CPU information—often from the DSDT (Differentiated System Description Table) or during processor object enumeration.
Some hypervisors (especially buggy KVM or QEMU defaults) pass an incomplete or manually mangled ACPI processor object. The triple-dash ( --- ) is abnormal; it likely denotes a from printk formatting or a malformed DSDT. On real Ivy Bridge hardware, you should see a clean "ACPI: GenuineIntel (Family 6 Model 58)" without dashes.
: Confirms the microprocessor supports the x86-64 long-mode instruction set. This allows the execution of 64-bit applications and addressing allocations beyond 4 Gigabytes of physical memory. 3. Family 6