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Bug#1128632: linux-image-6.12.73+deb13-amd64: boot failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K)

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Hello,

Forwarding to the bug address to have this info in the buglog. Please always keep the bug address on Cc: to increase the bus factor.

Best regards
Uwe

On 2/28/26 16:19, dgering@tutanota.com wrote:
> Dear Uwe,
> 
> Thank you for the informative response.
> 
> Yes, the boot failure occurred more than once and was primarily observed with 6.12.73+deb13-amd64. Earlier kernels such as 6.12.69+deb13-amd64 have booted more reliably on this system.
> 
> The failure happens very early in the boot process, typically after:
> 
> "Loading Linux"
> "Loading initial ramdisk"
> 
> and occasionally produces EFI stub errors related to kernel decompression. The issue appears somewhat non deterministic, which may align with your suggestion regarding EFI stub memory randomization or firmware memory reservation behavior. 
> 
> * I would also like to note that the system had previously been overclocked. The RAM was undervolted and the CPU slightly overvolted. I have since reverted BIOS settings to defaults while continuing testing to rule out hardware instability.
> 
> After reverting the BIOS configuration to optimized defaults, overall system stability has improved significantly. Boot reliability has increased and the frequency of early boot failures appears reduced. I am continuing testing under default settings to determine whether the remaining behavior is reproducible independent of the previous overclock configuration.
> 
> 
> Hardware information:
> 
>   *
> 
>     Motherboard: ASUS Sabertooth Z77
> 
>   *
> 
>     CPU: Intel Core i7-3770K (Ivy Bridge)
> 
>   *
> 
>     Firmware: UEFI
> 
>   *
> 
>     RAM: PNY DDR3 1866Mhz (testing currently underway due to suspected instability)
> 
>   *
> 
>     GPU: NVIDIA 3060 OC (proprietary driver)
> 
> 
> I have attached kernel logs collected from successful boots of both kernels as requested.
> 
> I will also review the power management debugging documentation you had referenced and report back if additional findings appear.
> 
> Please let me know if further diagnostics  would be helpful.
> 
> 
> Best regards,
> Donovan
> 
> 
> 
> --
> Secured with Tuta Mail:
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> 
> 
> Feb 27, 2026, 16:56 by ukleinek@debian.org:
> 
>     Control: tag -1 + moreinfo
> 
>     Hello,
> 
>     On Sun, Feb 22, 2026 at 03:18:02AM +0100, dgering@tutanota.com wrote:
> 
>         Package: linux-image-6.12.73+deb13-amd64
>         Version: 6.12.73+deb13-amd64
>         Severity: important
> 
> 
> 
>         Dear Debian Kernel Team,
> 
> 
>         I would like to report several boot and power-management issues observed after installing kernel version 6.12.73+deb13-amd64 on older Ivy Bridge hardware.
> 
>         System Information
> 
> 
>         Motherboard: ASUS Sabertooth Z77
>         CPU: Intel Core i7-3770K (Ivy Bridge)
>         Firmware: UEFI (legacy-compatible board)
>         Distribution: Debian (stable branch)
>         Architecture: amd64
>         GPU: NVIDIA (proprietary driver installed)
> 
> 
>         Problem Description
> 
>         After upgrading to kernel 6.12.73+deb13-amd64, the system exhibits multiple boot and runtime problems:
> 
> 
>         Boot failures occur intermittently with the following messages:
> 
> 
> 
>         EFI stub: ERROR: Failed to decompress kernel
>         EFI stub: ERROR: efi_stub_entry() failed
> 
> 
>     That is really surprising. This happens very early in the boot process
>     and if there was a problem in that code, this wouldn't be the only
>     report. The efi stub randomizes the memory location, that is the only
>     non-deterministic thing I'm aware of that could explain that (maybe in
>     combination with a BIOS issue where a memory area isn't marked as
>     reserved). Did that happen more than once and only with
>     6.12.73+deb13-amd64?
> 
>         During successful boots, ACPI-related errors appear in dmesg involving unresolved symbols and SATA controller initialization (_GTF/DSSP related messages).
> 
> 
>     That is unfortunately normal and most of the time no problem. I would
>     expect you have these with earlier kernels, too.
> 
>         System suspend behavior is unreliable:
>         *When placing the system into sleep mode, the computer immediately wakes without user interaction.
> 
> 
>     https://www.kernel.org/doc/html/latest/power/basic-pm-debugging.html#a-test-modes-of-hibernation
>     contains some debug ideas. I'm not sure how up-to-date this document is,
>     but it is worth a try.
> 
>         Please let me know if additional logs, dmesg output, or hardware information would be helpful for debugging.
> 
> 
>     Can you please provide a kernel log for both 6.12.69+deb13-amd64 and
>     6.12.73+deb13-amd64?
> 
>     Best regards
>     Uwe
> 
> 

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Bug#1128632: linux-image-6.12.73+deb13-amd64: boot failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K) dgering@tutanota.com - 2026-02-22 03:30 +0100
  Bug#1128632: linux-image-6.12.73+deb13-amd64: boot failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K) Uwe Kleine-König <ukleinek@debian.org> - 2026-02-27 23:00 +0100
  Processed: Re: Bug#1128632: linux-image-6.12.73+deb13-amd64: boot  failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-02-27 23:00 +0100
  Bug#1128632: linux-image-6.12.73+deb13-amd64: boot failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K) Uwe Kleine-König <ukleinek@debian.org> - 2026-03-04 18:40 +0100
  Bug#1128632: linux-image-6.12.73+deb13-amd64: boot failures, ACPI errors, and sleep issues on ASUS Sabertooth Z77 (i7-3770K) Uwe Kleine-König <ukleinek@debian.org> - 2026-03-07 08:30 +0100

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