Pci Ven8086 Ampdev8c22 Ampsubsys309f17aa Amprev04 Patched Instant

Combined, the string identifies: An Intel 8 Series/C220 Series SATA AHCI Controller, Revision 04, as implemented on a Lenovo motherboard with subsystem ID 309F.

It is crucial to distinguish between two types of patches: pci ven8086 ampdev8c22 ampsubsys309f17aa amprev04 patched

  • Match to upstream DB:
  • Inspect kernel logs / dmesg:
  • Check driver bound:
  • Test functionality:
  • Collect ACPI/DSDT info if suspicious:
  • Reproduce issue with different OS or kernel:

    • In Device Manager, under “IDE ATA/ATAPI controllers” or “Storage Controllers”, the device might show as “Intel(R) 8 Series Chipset Family SATA AHCI Controller”. A patched version would be indicated by a specific driver version (e.g., a hotfix from Lenovo with version number ending in something other than the generic Intel release) or a registry key at: HKLM\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\SATA containing a DisableDIPM flag. Combined, the string identifies: An Intel 8 Series/C220

    The most common reason for patching DEV_8C22 involves Aggressive Link Power Management (ALPM) . On Haswell-era Lenovo laptops, the SATA controller has a known firmware bug: Match to upstream DB:

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