Notably, a CPU core was definitely dead. I went ahead and just returned it all to Micro Center. Sorry, I couldn’t have been more helpful.
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It has been a long time since my last report. The instability continued until I updated the BIOS to F12g and made some additional configuration changes.
- Motherboard: Gigabyte TRX50 AI TOP
- Use case: Proxmox server
- Memory profile: EXPO enabled — EXPO I profile
BIOS configuration:
- Platform Power — FIXES THE REBOOT ISSUE
Path:
Settings → Platform Power
- AC BACK → Always Off
- ErP → Enabled (S4+S5) (mandatory fix); If it still wakes, use Enabled (S5).
- Power Loading → Enabled
- Wake on LAN → Disabled
- Soft-Off by PWR-BTTN → Instant-Off
This entire block removes every source of accidental wake without touching RAM or CPU performance.
- CPU Virtualization Optimizations (Proxmox)
Path:
Tweaker → Advanced CPU Settings
Set:
- SVM Mode → Enabled
- SMT Mode → Enabled
- Global C-state Control → Auto
- Power Supply Idle Control → Typical Current Idle
These maximize Proxmox VM/LXC performance and eliminate AMD idle bugs.
- IOMMU & PCIe Stability Config (for Passthrough)
Path:
Settings → Miscellaneous
- IOMMU → Enabled
- PCIe ASPM Mode → Disabled
Prevents PCIe power-state oscillations that cause wake events.
Path:
Settings → IO Ports
- Above 4G Decoding → Enabled
- Re-Size BAR Support → Enabled
- SR-IOV Support → Enabled
- Initial Display Output → Slot of main GPU (usually PCIe slot 1)
- USB Power Behavior
(Handled automatically by ErP)
- USB power is cut during S5 → prevents USB wake
- Boot Configuration
Path:
Boot
- Fast Boot → Disabled
- CSM Support → Disabled
- Boot Priority → Set Proxmox SSD as #1
Pure UEFI is mandatory for clean GPU passthrough.