dxe pci bus enumeration 93

March 10, 2023 - Problem statement TrueNAS Scale alerted me one of my drives was degraded. I offlined the drive, powered down my server, and replaced the bad drive with a new one. When I turned on my server, it hanged with message DXE PCI Bus Enumeration 93. I cleared CMOS, then restarted the server and was able to get as far as the BIOS.

TweakTown Forums

tweaktownforum.com › forum › tech-support-from-vendors › asrock › 51203-asrock-extreme-4-stuck-at-error-93

Asrock Extreme 4 stuck at Error 93 - TweakTown Forums

8F - OEM DXE initialization codes 90 - Boot Device Selection (BDS) phase is started 91 - Driver connecting is started 92 - PCI Bus initialization is started 93 - PCI Bus Hot Plug Controller Initialization 94 - PCI Bus Enumeration 32 95 - PCI ...

Discussions

PCI Bus Enumeration

What other hardware do you use? I get this with some m.2 SSDs (with some configurations and also on other boards) they sometimes seem to conflict other things. More on reddit.com

r/supermicro

August 20, 2022

SOLVED - Computer not getting past POST screen | OCAU Forums

Hi all, i got a headache for ya. System Specs: Intel i7 7700k Nvidia GTX 1080ti Gigabyte Z270x-Gaming5 Samsung 960EVO SSD Samsung 500GB 850 SSD 2TB... More on forums.overclockers.com.au

forums.overclockers.com.au

x86 - BIOS Stuck after PCIe Enumeration - Stack Overflow

We are developing a custom PCIe card on FPGA. After programming the FPGA, we can read the PCIe configuration and it seems correct. When we connect this PCIe card on a Jetson TX2, it works fine. ... More on stackoverflow.com

stackoverflow.com

Boot issues I've been having.

I'm posting this again because last time I got no responses, just people who have read it. I figure by now its been buried so I need to repost it just to get someone to read it. So I have an Asus Maximus VII Hero motherboard. Of course it has a handy QR code that tells you what is going on as... More on forums.tomshardware.com

forums.tomshardware.com

February 10, 2015

GitHub

github.com › tianocore › edk › blob › master › Sample › Bus › Pci › PciBusNoEnumeration › Dxe › PciEnumeratorSupport.c

edk/Sample/Bus/Pci/PciBusNoEnumeration/Dxe/PciEnumeratorSupport.c at master · tianocore/edk

Bus, Device, Func · ); · if (!PciIoDevice) { return NULL; } · // // If it is a full enumeration, disconnect the device in advance · // if (gFullEnumeration) { · PciDisableCommandRegister (PciIoDevice, EFI_PCI_COMMAND_BITS_OWNED); ·

Author tianocore

reddit.com › r/supermicro › pci bus enumeration

r/supermicro on Reddit: PCI Bus Enumeration

August 20, 2022 -

Hello. I am new to Supermicro servers so please bear with me. I just purchased a 1u Xeon system to run pfsense.

When it boots, it gets stuck on DXE--BIOS PCI Bus Enumeration... 92, then eventually loops back only to get stuck here again.

I have already tried removing all peripherals and CMOS battery but no luck. I have a deadline to get this system deployed so any help is much appreciated.

Top answer

1 of 2

What other hardware do you use? I get this with some m.2 SSDs (with some configurations and also on other boards) they sometimes seem to conflict other things.

2 of 2

Is this of any use? https://support.snapstream.com/hc/en-us/articles/360014569914-SnapStream-Server-Boots-to-SuperMicro-PCI-Bus-Enumeration-Message

UEFI

uefi.org › specs › PI › 1.8A › V5_PCI_HostBridge.html

10. PCI Host Bridge — UEFI Platform Initialization Specification 1.8 Errata A documentation

Typically, the PCI bus driver will enumerate and allocate resources to all devices for a PCI host bridge. A sample algorithm for PCI enumeration is described below to clarify some of the finer points of the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL . Actual implementations may vary.

Supermicro

supermicro.com › support › faqs › faq.php

FAQ Entry | Online Support | Support - Super Micro Computer, Inc.

August 18, 2023 - Question SYS-751A-i stuck at DXE-BIOS PCI BUS ENUMERATION during BIOS Boot.

OCAU Forums

forums.overclockers.com.au › threads › computer-not-getting-past-post-screen.1268214

SOLVED - Computer not getting past POST screen | OCAU Forums

Hi all, i got a headache for ya. System Specs: Intel i7 7700k Nvidia GTX 1080ti Gigabyte Z270x-Gaming5 Samsung 960EVO SSD Samsung 500GB 850 SSD 2TB...

Stack Overflow

stackoverflow.com › questions › 54249383 › bios-stuck-after-pcie-enumeration

x86 - BIOS Stuck after PCIe Enumeration - Stack Overflow

Top answer

1 of 1

We got it working. It seems that the expansion ROM was enabled. It works fine after disabling it. Thanks @Margaret Bloom.

Tom's Hardware Forum

forums.tomshardware.com › home › motherboards

Boot issues I've been having. | Tom's Hardware Forum

February 10, 2015 - I don't know what exactly is going on because it always says no input. Whenever this happens I've also watched the QR codes to see what comes up. Every time this happens I always get the same three codes which are, 94- PCI Bus Enumeration, 96- PCI Bus Assign Resources, AE- Legacy Boot Event.

Find elsewhere

Google Bing Mojeek

reddit.com › r/homelab › x11sdv-8c-tp8f - stuck on dxe - bios pci bus enumeration code 92

r/homelab on Reddit: X11SDV-8C-TP8F - Stuck on DXE - BIOS PCI Bus Enumeration Code 92

April 17, 2025 -

Hello, I got 2x SuperServer E300-9D-8CN8TP with X11SDV-8C-TP8F motherboards from my work place. I found some AC adapters that power on the device and now am troubleshooting them. They startup and go to "DXE - BIOS PCI Bus Enumeration" with a code of 92, it stays there and then reboots. I plugged in the ethernet cable to the IPMI port in hopes that I could do something from there. The BMC got the ip 192.168.1.152. If anymore information is needed I will provide it to the best of my abilities. Thank you.

tldr: Does anyone know how I could get passed DXE - BIOS PCI Bus Enumeration Code 92 on a X11SDV-8C-TP8F?

After this part the system will restart. The right label is IPMI, when I go to 192.168.1.152 it asks for a username and password. I put the username as ADMIN and the password as 002590B8FDE9 but that doesn't work. I don't see any other place that lists a password for IPMI. Top down view of the E300-9D-8CN8TP with X11SDV-8C-TP8F motherboard

Edit: So I got 32GB DDR4 ECC RAM and with that I was able to boot and get into bios. There are other issues involving code 79 but that will have to be a different issue.

Thank you for your help!

Top answer

1 of 5

If you've cleared CMOS, try different ram? Could be bad board?

2 of 5

Check the event logs. I have the same board the it gets in a reboot loop when there’s a faulty ram module plugged in.

reddit.com › r/homelab › boot issue with supermicro e300-d9

r/homelab on Reddit: Boot issue with Supermicro E300-D9

December 19, 2021 -

Got a SP E300-D9-4CN8TP brand new from Newegg.com and it's stuck at booting time with code DXE--BIOS PCI Bus enumeration 92. It reboots after ~10sec at this point. It's doing this with no storage attached and only one RAM module attached. I can't access to the BIOS neither. I have tried all I could imagine including reset CMOS and acceding using IPMI getting same result. Very poor experience for an almost 1K mini server. Idk what I'm missing here.

Top answer

1 of 3

No storage? I'm using an e300-8d but I've never tried booting it without a drive.

2 of 3

Do you have any PCI cards installed?

Unraid

forums.unraid.net › home › unraid os support › general support › in need of some help with supermirco motherboard issues

In need of some help with Supermirco motherboard issues - General Support - Unraid

March 25, 2018 - So I purchased a Supermicro X11SAT-F-O motherboard. I got this since I wanted to use the NVMe support this board offered. Also I have a new Xeon E3-1275v6 CPU and 64gb of DDR4 ECC ram. From day one I had some issues with the board. Random stuff etc. Then after having Jon from Lime-Tech remote it ...

Tom's Hardware Forum

forums.tomshardware.com › home › motherboards

Question - Q-Code 93 PCI Bus Hot Plug Controller Initialization. | Tom's Hardware Forum

March 30, 2022 - Hello, I just got a new PC (with some of my old pc parts) and suddenly I've got this Q-Code 93 PCI Bus Hot Plug Controller Initialization. The PC won't start at first (the bios pops up and won't boot into windows 10) but after I reset it it boots normally. What can i do to fix this issue? Every...

VOGONS

vogons.org › viewtopic.php

Error code 94 on pci diagnostic card \ VOGONS

January 18, 2021 - Basically code 0x94 should be interpreted as 0x0205 and that means "PCI bus enumeration".

Supermicro

supermicro.org.cn › support › faqs › faq.cfm

FAQ Entry | Online Support | Support - Super Micro Computer, Inc.

June 15, 2020 - Question C9X299-RPGF With i9-10900x,install a V100 GPU in slot1 or slot7, hear 5 short beeps during POST, and screen hang at 94, "DXE:BIOS PCI bus enumeration"

UEFI

uefi.org › specs › PI › 1.8 › V5_PCI_Platform.html

11. PCI Platform — UEFI Platform Initialization Specification 1.8 documentation

If a platform supports this protocol, this protocol is produced by a Driver Execution Environment (DXE) driver and must be made available before the Boot Device Selection (BDS) phase. The PCI bus driver will look for the presence of this protocol before it begins PCI enumeration.

reddit.com › r/homelab › h12ssl-i stuck at bios pci bus enumeration 94

r/homelab on Reddit: h12ssl-i stuck at bios pci bus enumeration 94

October 26, 2023 -

Long story short the iommu setup wasn't idea on my board so I did a bios update to see if it would split things up better and since the update it's just sitting at the boot screen with the dxe--bios pci bus enumeration 94. It's been about an hour now so I know something must be wrong at this point. Also when in the ipmi it still lists the old firmware as being on the board.

Any ideas?

Top answer

1 of 3

Have you tried resetting CMOS?

2 of 3

Try turning it off. Then upgrade the bios again via IPMI? Sounds like maybe you didn't flash it successfully the first time. You should also not preserve anything when asked during the bios upgrade. Always best to start fresh.

Supermicro

supermicro.com › manuals › other › AMI_BIOS_POST_Codes_for_Grantley_Motherboards.pdf pdf

AMI BIOS POST Codes for Supermicro C7/X9/X10/X11/B9/B10/B1/A1 Motherboards

Reserved for future AMI DXE codes · 0x80 – 0x8F · 0x90 · Boot Device Selection (BDS) phase is started · 0x91 · Driver connecting is started · 0x92 · PCI Bus initialization is started · 0x93 · PCI Bus Hot Plug Controller Initialization · 0x94 · PCI Bus Enumeration ·

reddit.com › r › homelab › comments › 1p61fhc › dxe_pci_bus_enumeration_94_hangs_and_reboots

DXE PCI Bus Enumeration 94, hangs and reboots

We cannot provide a description for this page right now

GitHub

github.com › xCuri0 › ReBarUEFI › issues › 265

Boot-loop (sometimes) a few times on BIOS PCI Bus Enumeration · Issue #265 · xCuri0/ReBarUEFI

January 4, 2025 - Boot-loop (sometimes) a few times on BIOS PCI Bus Enumeration#265 · Copy link · OdinVex · opened · on Jan 4, 2025 · Issue body actions · System · Motherboard: Supermicro SuperServer X10DRU-i+ BIOS Version: 3.5 04/27/2022 ("X10DRU2.427") GPU: PNY Nvidia Quadro P4000 Single-Slot, Sparkle Intel Arc 310 Low-Profile ·

Author xCuri0