#1034765 [Firmware Bug]: APEI: Invalid physical address in GAR [0x0/64/0/4/0]

Package:
src:linux
Source:
src:linux
Submitter:
Al Ma
Date:
2025-08-10 21:37:03 UTC
Severity:
normal
#1034765#5
Date:
2023-04-23 20:47:59 UTC
From:
To:
Package: linux-image-5.10.0-21-amd64
Version: 5.10.162-1
Severity: wishlist
In the output of journalctl -b we see this:
…
Apr 23 22:30:59 AnonymizedMachineName kernel: efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
Apr 23 22:30:59 AnonymizedMachineName kernel: Console: switching to colour frame buffer device 128x48
Apr 23 22:30:59 AnonymizedMachineName kernel: fb0: EFI VGA frame buffer device
Apr 23 22:30:59 AnonymizedMachineName kernel: intel_idle: MWAIT substates: 0x2020
Apr 23 22:30:59 AnonymizedMachineName kernel: Monitor-Mwait will be used to enter C-1 state
Apr 23 22:30:59 AnonymizedMachineName kernel: Monitor-Mwait will be used to enter C-2 state
Apr 23 22:30:59 AnonymizedMachineName kernel: ACPI: \_SB_.SCK0.CP00: Found 2 idle states
Apr 23 22:30:59 AnonymizedMachineName kernel: intel_idle: v0.5.1 model 0x55
Apr 23 22:30:59 AnonymizedMachineName kernel: intel_idle: Local APIC timer is reliable in all C-states
Apr 23 22:30:59 AnonymizedMachineName kernel: [Firmware Bug]: APEI: Invalid physical address in GAR [0x0/64/0/4/0]
What does the last message “[Firmware Bug]: APEI: Invalid physical address in GAR [0x0/64/0/4/0]” tell us in plain English, except that there's a firmware bug? Which firmware exactly is involved? Is there a real fault anywhere? The machine is stationary, has WS C422 PRO SE motherboard with Intel(R) Xeon(R) W-2235 CPU @ 3.80GHz, and runs Debian stable with a few updated packages from snapshots.
Cheers,
Alma
#1034765#16
Date:
2023-05-13 20:51:28 UTC
From:
To:
The firmware is the system firmware (BIOS or UEFI), which provides
tables of data in memory describing features that the system firmware
and hardware provide.

The kernel is trying to read a table describing the ACPI Platform Error
Interface (APEI), and detected a major error in the description, so the
kernel is not able to use the APEI feature.  It's possible that the
machine actually doesn't support APEI (but in that case, the
description should not be there at all).

I don't know exactly what APEI is for, but you can research that
yourself if you want.

Ben.
#1034765#25
Date:
2025-08-10 21:31:56 UTC
From:
To:
found 1034765 src:linux/6.12.38-1
thanks


The same still occurs.  As the machine experiences a failure on resuming from sleep, a deeper look into it would be really helpful.  I found additional information on APEI in https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/18_ACPI_Platform_Error_Interfaces/ACPI_PLatform_Error_Interfaces.html .