Acpi Genuineintel---intel64-family-6-model-58 2021 (iPhone)

or an "Unknown Device" warning. This usually happens for one of two reasons: Missing Chipset Drivers:

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: This is the most specific part of the identifier. The "Model" number, also from the CPUID instruction, differentiates between different microarchitectures and processor families within the broader Family 6. Model 58 (which is 0x3A in hexadecimal) is the code that positively identifies a processor as belonging to the "Ivy Bridge" microarchitecture.

[ 0.000000] ACPI: GENUINEINTEL --- Intel64 Family 6 Model 58 [ 0.000000] Intel Ivy Bridge CPU detected [ 0.001234] acpi PNP0A08: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3] [ 0.567890] intel_idle: MWAIT substates: 0x2120

This "blog post" provides an overview and technical breakdown of the hardware identified by the "ACPI GenuineIntel-Intel64 Family 6 Model 58" string, which is commonly seen in Windows Device Manager or system logs. acpi genuineintel---intel64-family-6-model-58

: Try resetting BIOS to "Default Settings" or disabling "Fast Boot" in Windows.

A: No. "Family 6" is a persistent lineage that continues to this day. Modern CPUs (like 12th-gen Alder Lake) are also part of "Family 6", but they have a much higher "Model" number (e.g., Model 151). It's a consistent naming scheme, not an indicator of age.

When you encounter this exact string—often inside the Windows Device Manager under "Hardware IDs," in system event logs, or within Advanced Configuration and Power Interface (ACPI) firmware tables—it means your operating system is interacting directly with an Ivy Bridge processor built on Intel’s historic 22-nanometer (nm) manufacturing node.

If you cannot find a Win 10 driver, use the latest available (Windows 7/8 drivers often work in compatibility mode). 3. Disable "Fast Startup" in Windows or an "Unknown Device" warning

How to Fix ACPI GenuineIntel---Intel64 Family 6 Model 58 Issues

Any computer displaying this string is powered by an Intel 3rd Generation Core, Pentium, or Celeron processor built on the 22-nanometer manufacturing process. These chips originally debuted in mid-2012. Desktop Chips : i7-3770K, i7-3770, i7-3770S Intel Core i5 : i5-3570K, i5-3570, i5-3470, i5-3330 Intel Core i3 : i3-3220, i3-3240 Mobile & Laptop Chips Intel Core i7 Mobile : i7-3610QM, i7-3520M Intel Core i5 Mobile : i5-3210M, i5-3320M ⚙️ Why Driver Issues Happen for "Model 58"

The string acpi genuineintel---intel64-family-6-model-58 is not a bug, not a warning, and certainly not a cause for alarm. It is a – a piece of forensic evidence left by the Linux kernel to prove that the ACPI subsystem and the CPU driver have successfully identified and configured your Ivy Bridge server’s processor.

: Errors may occur when the OS tries to put the CPU into a power-saving state (C-states) that the BIOS does not handle correctly. The "Model" number, also from the CPUID instruction,

What is the specific ? Decoding Intel processor models reported by Windows

These chips were revolutionary when they launched in 2012 because they were the first to use "3D" Tri-Gate transistors, providing a massive jump in power efficiency over the previous generation. Why is this showing up as an error?

Download the latest from the Intel Download Center.