i just wanna to share my experience with H12SSL-C (paired with 7282 CPU, 8x32GB RAM). since day one i used this board there is a problem with stuck on PCI Bus Enumeration message on power on. today i had a very similar situation:
- i added new M.2 nvme boot drive to my system, Proxmox booted just fine from it.
- in Proxmox i just checked all VMs to auto start and did a reboot.
- boot process hangs on "PCI Bus Enumeration".
- i did a hard power off my system with long press on Power on button.
- system them boot up just fine, but onboard 3008 HBA was not there.
- then i shut down my system, removed power cord for complete power off.
- connected back power cord, power up system, and then all up and running - 3008 HBA is in place.
so, while it works, then all is fine, except these errors on boot. most of time bios stuck is after a reboot. when you cold boot a system, then it always boots just fine.
i'm on BIOS 2.0 now. i see now BIOS version 2.1 is available, but not sure i want it - there are nothing interesting in release notes.
I just started running into this issue, only after restart, cold boot fine... after a config change.
Differences in config from yours:
- my board is a different variant, H12SSL-i
- My DIMMs are 2666 MT/s (yours likely 3200?)
CPU is same. Only speculation that could be made here (in my mind) is the memory controller and this CPUs channel config, and how they differ from typical EYPC, whether SM considered that in the PCI Bus Enumeration process... something perhaps not being accounted for in cold start vs. restart.
Anyway...
Pre-issue config items changed:
- ASUS Hyper M.2 PCIe 4.0 with 4x 1TB 970 Evo Plus
- 2x NVMe drives on board slots
Post-issue config:
- removed all on board NVMe drives
- removed ASUS card (effectively, no more NVMe)
- added LSI SAS 2008
- added (2x) Athena Power BP-TLA3141SAS12 12 Gbps Mini-SAS HD Hot-Swap SAS
- added (4x) 400GB SAS HUSMR3240ASS204 HGST 2.5in Enterprise Server HDD SSD SS300 MLC
- swapped out some spinning rust, but were of same line of product, (2x) WD Red 8TB -> (2x) 4TB, likely irrelevant, but for sake of thoroughness.
System details:
- Linux kernel 5.15.46 (unraid 6.10.3 - ehem, no judgement please)
Additional issues:
- inability to access smb over 445 after certain web stack services are started (likely unrelated) - specifically the Appwrite docker. Again, thoroughness for some potentially obscure reason.