EU Gigabyte Mainboard MC12-LE0 Re1.0 AMD B550 AM4 Ryzen

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TheColin21

New Member
Aug 4, 2025
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try this to see hidden options.
Go to any config page, then press RightCtrl + RightShift then press F2, then the bios will display all hidden options.
fascinating, never heard of hidden options in BIOS that have to be activated in that way. I will try. Where can I find more information about this? (I mean the hidden options).
 

RolloZ170

Well-Known Member
Apr 24, 2016
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Where can I find more information about this? (I mean the hidden options).
UEFITool, ectract the Setup module. extract BIOS Option with IFRextractor.
Code:
        GrayOutIf
            EqIdVal QuestionId: 0x24B, Value: 0x1
            SuppressIf
                EqIdVal QuestionId: 0x258, Value: 0x1
                    Not
                End
                SuppressIf
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                    GrayOutIf
                        True
                        OneOf Prompt: "Primary Video Adaptor", Help: "Select Internal/External Graphics.", QuestionFlags: 0x14, QuestionId: 0x2747, VarStoreId: 0x1, VarOffset: 0x1B3, Flags: 0x10, Size: 8, Min: 0x1, Max: 0x2, Step: 0x0
                            Default DefaultId: 0x0 Value: 2
                            Default DefaultId: 0x1 Value: 2
                            OneOfOption Option: "Int Graphics (IGD)" Value: 1
                            OneOfOption Option: "Ext Graphics (PEG)" Value: 2
                        End
                    End
                    Subtitle Prompt: "", Help: "", Flags: 0x0
                    End
                End
                SuppressIf
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                End
            End
        End
Code:
        GrayOutIf
            EqIdVal QuestionId: 0x24B, Value: 0x1
            SuppressIf
                EqIdValList QuestionId: 0x258, Values: [0, 1, 8, 9]
                SuppressIf
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                    OneOf Prompt: "Integrated Graphics Controller", Help: "Enable Integrated Graphics controller.", QuestionFlags: 0x14, QuestionId: 0x274B, VarStoreId: 0x1, VarOffset: 0x1AC, Flags: 0x10, Size: 8, Min: 0x0, Max: 0xF, Step: 0x0
                        Default DefaultId: 0x0 Value: 0
                        Default DefaultId: 0x1 Value: 0
                        OneOfOption Option: "Disabled" Value: 0
                        OneOfOption Option: "Forces" Value: 2, MfgDefault
                        OneOfOption Option: "Auto" Value: 15
                    End
                    SuppressIf
                        EqIdVal QuestionId: 0x274B, Value: 0x2
                            Not
                        End
                        OneOf Prompt: "UMA Frame buffer Size", Help: "Set UMA FB size.", QuestionFlags: 0x14, QuestionId: 0x274C, VarStoreId: 0x1, VarOffset: 0x1AE, Flags: 0x12, Size: 32, Min: 0x40, Max: 0xFFFFFFFF, Step: 0x0
                            OneOfOption Option: "Auto" Value: 4294967295, Default, MfgDefault
                            OneOfOption Option: "64M" Value: 64
                            OneOfOption Option: "128M" Value: 128
                            OneOfOption Option: "256M" Value: 256
                            OneOfOption Option: "512M" Value: 512
                        End
                    End
                    OneOf Prompt: "Chipset HD audio", Help: "Chipset HD audio enabled or disabled.", QuestionFlags: 0x14, QuestionId: 0x274D, VarStoreId: 0x1, VarOffset: 0x1B2, Flags: 0x10, Size: 8, Min: 0x0, Max: 0x1, Step: 0x0
                        Default DefaultId: 0x0 Value: 1
                        Default DefaultId: 0x1 Value: 1
                        OneOfOption Option: "Disabled" Value: 0
                        OneOfOption Option: "Enabled" Value: 1, MfgDefault
                    End
                    Subtitle Prompt: "", Help: "", Flags: 0x0
                    End
                    OneOf Prompt: "Primary Video Adaptor", Help: "Select Internal/External Graphics.", QuestionFlags: 0x14, QuestionId: 0x274E, VarStoreId: 0x1, VarOffset: 0x1B3, Flags: 0x10, Size: 8, Min: 0x1, Max: 0x2, Step: 0x0
                        Default DefaultId: 0x0 Value: 2
                        Default DefaultId: 0x1 Value: 2
                        OneOfOption Option: "Int Graphics (IGD)" Value: 1
                        OneOfOption Option: "Ext Graphics (PEG)" Value: 2
                    End
                    Subtitle Prompt: "", Help: "", Flags: 0x0
                    End
                End
                SuppressIf
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                End
            End
        End 
        GrayOutIf 
            EqIdVal QuestionId: 0x24B, Value: 0x1
            SuppressIf 
                EqIdVal QuestionId: 0x258, Value: 0x8
                    Not 
                End 
                SuppressIf 
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                    GrayOutIf 
                        True 
                        OneOf Prompt: "Primary Video Adaptor", Help: "Select Internal/External Graphics.", QuestionFlags: 0x14, QuestionId: 0x2752, VarStoreId: 0x1, VarOffset: 0x1B3, Flags: 0x10, Size: 8, Min: 0x1, Max: 0x2, Step: 0x0
                            Default DefaultId: 0x0 Value: 2
                            Default DefaultId: 0x1 Value: 2
                            OneOfOption Option: "Int Graphics (IGD)" Value: 1
                            OneOfOption Option: "Ext Graphics (PEG)" Value: 2
                        End 
                    End 
                    Subtitle Prompt: "", Help: "", Flags: 0x0
                    End 
                End 
                SuppressIf 
                    EqIdVal QuestionId: 0x14D, Value: 0x0
                End 
            End 
        End
 

TheColin21

New Member
Aug 4, 2025
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UEFITool, ectract the Setup module. extract BIOS Option with IFRextractor.
Interesting. I am currently trying to do so but there are lots of unknown GUIDs in the BIOS, when I try to search UEFITool hangs and so I've been able to find the setup file. Is there a guide to this? Never played around with UEFI files before.

Also in your code snipped there are only Internal and External graphics which normally would mean the iGPU of the CPU (in my case a Ryzen 4650G) or an external GPU (in my case the A310). There seems to be no 3rdoption for the BMC's VGA. Or was the snippet just an example?

Edit: Correction - I found where you took the snippet from. I still don't know if that option will help in my case and a guide would still be much appreciated.
Also: how can I find the key combination to access hidden settings on different types of mainboards?
 

RolloZ170

Well-Known Member
Apr 24, 2016
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when I try to search UEFITool hangs and so I've been able to find the setup file. Is there a guide to this? Never played around with UEFI files before.
use UEFIToolNE to search and extract.
search for (Text) "Primary Video Adaptor"
There seems to be no 3rdoption for the BMC's VGA. Or was the snippet just an example?
example what you can expect. but from MC12-LE0 BIOS.
options may change with BIOS versions.
Also: how can I find the key combination to access hidden settings on different types of mainboards?
this is not a feature of all vendors.
but this afaik work for all gigabyte server motherboards.
 
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TheColin21

New Member
Aug 4, 2025
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@RolloZ170 I tried it - hidden options did show up but changing the Primary Video Adaptor to IGD didn't change anything - whether I enabled the IDG (option basically right above it) or not. Still used the A310...
 

RolloZ170

Well-Known Member
Apr 24, 2016
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germany
@RolloZ170 I tried it - hidden options did show up but changing the Primary Video Adaptor to IGD didn't change anything - whether I enabled the IDG (option basically right above it) or not. Still used the A310...
unfortunaly i can't test anything, i sold my board because i don't need it.
worked for me but was older BIOS and CPU without iGPU.
 

TheColin21

New Member
Aug 4, 2025
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unfortunaly i can't test anything, i sold my board because i don't need it.
worked for me but was older BIOS and CPU without iGPU.
Just looked again and made sure that the iGPU was actually disabled by the hidden IGD option - it was. Still no output from the Aspeed VGA...
 

luckylinux

Well-Known Member
Mar 18, 2012
1,716
578
113
try this to see hidden options.
Go to any config page, then press RightCtrl + RightShift then press F2, then the bios will display all hidden options.
PCIe GPU is called PEG
Is that a generic "Trick" that works on many Motherboards and/or related to a specific BIOS Vendor ?
 

RolloZ170

Well-Known Member
Apr 24, 2016
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New BMC Firmware is out :)
No.
Type
Issue Description
Note
12.61.39​
1​
F​
[feature] Update new pci devices support
2​
F​
[defect] Fix the backup/restore function that does not retain alert information.
3​
F​
[feature] Remove SSH service.
4​
B​
[redfish][defect] Resolve the NTP does not synchronize between web and Redfish.
5​
B​
[redfish][defect] Resolve the issue that Redfish cannot patch the NTP server.
 
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TheColin21

New Member
Aug 4, 2025
11
0
1
No.
Type
Issue Description
Note
12.61.39​
1​
F​
[feature] Update new pci devices support
2​
F​
[defect] Fix the backup/restore function that does not retain alert information.
3​
F​
[feature] Remove SSH service.
4​
B​
[redfish][defect] Resolve the NTP does not synchronize between web and Redfish.
5​
B​
[redfish][defect] Resolve the issue that Redfish cannot patch the NTP server.
How can I enable Redfish? I would've thought that would be in the BMC. So far I only saw it in the hidden options of the BIOS.
 

_Dejan_

Member
Aug 18, 2022
74
30
18
[feature] Remove SSH service.
Will this effect us somehow? As I understand this will not remove access to root BMC by TTL adapter to change board and get FAN controls?
 

Gruenschnabel

New Member
Sep 23, 2025
27
2
3
Just a short question: How to insert an ISO Image trough webgui / IPMI fast and correctly? I dont have another server providing iso`s yet. Tried with H5viewer, isnt really working.