https://bugzilla.kernel.org/show_bug.cgi?id=220749

--- Comment #8 from [email protected] ([email protected]) 
---
Yes — system is already running the latest BIOS / UEFI firmware available from
the vendor.
BIOS was also reset to defaults to rule out configuration-side issues.

The behavior is the same with:
- Default BIOS settings
- Reset NVRAM
- CSM disabled
- Secure Boot on and off

Additionally, the issue is reproducible across multiple kernel versions (6.6
LTS, 6.8, and 6.18-rc builds), and occurs regardless of kernel command-line
parameters unless ACPI is fully disabled (`acpi=off`), which suggests the hang
occurs during early ACPI/APIC initialization before PCI/USB/NVMe enumeration.

This points to an ACPI or IOMMU initialization path that is failing silently
rather than a firmware misconfiguration.

If helpful, I can provide:
- Full `dmesg` boot log (normal vs `acpi=off`)
- `acpidump` table set
- `journalctl -b -1` traces (from successful acpi=off boot)

Just let me know which format you prefer.

Sent from Proton Mail for Android.

-------- Original Message --------
On Tuesday, 11/04/25 at 22:57 [email protected] wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=220749

--- Comment #3 from Artem S. Tashkinov ([email protected]) ---
Are you using the latest BIOS? If not, please update.

Also would be great if you reset BIOS settings.

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