Bios not working with DisplayPort

Wandering Mist

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Hi all.

I recently upgraded my system with a new CPU and motherboard, and spent hours trying to work out why it wouldn't initially post. Turns out it simply didn't like being connected to DisplayPort. Once I switched to a DVI connection only it worked just fine. Once I got into Windows and got things set up, it recognised the DisplayPort just fine, but still won't let me go into bios with it. Whenever I turn on the PC, the screen is completely blank until I get to the windows login screen. If I want to get to the bios I have to unplug the DisplayPort cable, which can get pretty annoying. Oh and if I switch the primary monitor to an HDMI connection instead of DisplayPort it works just fine in the bios.

Is there a fix to this or is it a "wait until a bios update comes in" type of deal.

My current PC specs:
  • Motherboard: MSI B550-A Pro
  • CPU: Ryzen 5 3600 (at stock)
  • GPU: Gigabyte GTX 1060 (6GB)
  • RAM: Corsair Vengeance 3200Mhz 16GB (2X8)
  • Boot Drive: Kingston A2000 m.2 NVME Drive (250GB)
  • PSU: Seasonic Focus GX-650
  • Primary monitor: LG 27GL83A (displayport)
  • Secondary monitor: BenQ GL2450HM (DVI)
Oh and things I've already checked/tried:
  • bios is set to UEFI mode
  • all drivers are updated
  • swapping to a different DisplayPort cable
  • cmos
  • bios update
  • reset monitor to default settings
  • all monitors are plugged into the graphics card
  • monitor worked perfectly fine with old CPU/motherboard
EDIT 23rd November 2020: Finally found a fix, many thanks to @mrung123602a0 for finding it:

There is an NVidia firmware update that you need to install. You can get it here:
NVIDIA Graphics Firmware Update Tool for DisplayPort 1.3 and 1.4 Displays
Download English (U.S.) drivers for NVIDIA hardware - , , ,
 
Last edited:

zerijelly

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Due to BIOS default mode is UEFI mode, the graphic card's GOP driver version too old would cause no display with DP output.
Suggest set BIOS to CSM mode which could help somehow have DP output normally.
 

Wandering Mist

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Due to BIOS default mode is UEFI mode, the graphic card's GOP driver version too old would cause no display with DP output.
Suggest set BIOS to CSM mode which could help somehow have DP output normally.
Thanks for the reply. Unfortunately changing Bios to CSM mode didn't fix the problem either.
 

darkhawk

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We've always seen strange issues when mixed with Gigabyte GPU's and MSI motherboards. Usually they won't even work.
But we've seen issues like this before, and usually we it just comes down to needing to use HDMI/DVI when you tweak the BIOS, and then DP the rest of the time.
How often are you really in the BIOS?
 

Hardcore Games™

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We've always seen strange issues when mixed with Gigabyte GPU's and MSI motherboards. Usually they won't even work.
But we've seen issues like this before, and usually we it just comes down to needing to use HDMI/DVI when you tweak the BIOS, and then DP the rest of the time.
How often are you really in the BIOS?
I have noticed this as well, which makes me question the firmware on the devices
 

Wandering Mist

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We've always seen strange issues when mixed with Gigabyte GPU's and MSI motherboards. Usually they won't even work.
But we've seen issues like this before, and usually we it just comes down to needing to use HDMI/DVI when you tweak the BIOS, and then DP the rest of the time.
How often are you really in the BIOS?
That's very curious, especially since my last motherboard was also from MSI (a Z370-A pro) and that had no problems with the DP connection at all. I'll see if I can borrow a different graphics card from a friend of mine to test it out.
 

ChrisS_NE

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Hey,

I have a similar issue. MAG B550M Bazooka. Everything is working fine except that I can't get in to the BIOS. I get no output until the Windows 10 sign-in screen. If I tap delete during boot I think I get in (monitor goes to sleep, doesn't boot into WIndows and ctrl-alt-del restarts the machine and get back to Windows) but obviously can't see to be sure. Everything was fine during the build, but I suspect the issue is related to a recent BIOS update (went to A.20). Unlike your issue, I've tried with DVI on another monitor and the behaviour is the same.

It's not a huge issue as I don't need to access the BIOS very often but it's a right pain and something I'm going to need to fix sooner or later.

I'll post my own thread as the symptoms aren't identical but interested to see how / if you fix it?
 

BigBlack

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Same issue here with B450m Mortar MAX and B550 Tomahawk. GPU is a GTX 1050 Ti. It seems it only affects AM4 chipsets.
@ChrisS_NE:
What Video card are you using? It might be a very specific issue with Nvidia cards...
 

ChrisS_NE

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Hi. It's a Sapphire R7 260x (link).

I have a different thread running on here about this but it *was* working until recently. It does seem to align with a recent BIOS update but I can't swear to that.

I do wonder if because of the age of the GPU (and I do intend to upgrade in the next month or so) combined with the recent BIOS update.?
 

BigBlack

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It shouldn't demonstrate such a behavior, no matter the age of the video card. After all these are not ancient cards, they are good for any use except demanding gaming.
I have the suspicion it's the Bios update as well, a recent build in June with the B450 Mortar, an R7 1700 and an Nvidia GTX 750 did not behave like that at all.
Maybe it's the combination of 3rd Gen Cpus and DP that is to blame but the Bios is a stronger contestant!
 

ChrisS_NE

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Just to follow this up. I raised a ticket with MSI and they have advised a BIOS reset.

I was hesitant to do this in case I can't get back in to my machine but I guess I'll have to give it a go! Will let you know how I get on.
 

ChrisS_NE

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Further update: bios reset with no change to behaviour. Still no output on GPU before OS boot. Waiting to see what MSI come back with next.
 

BigBlack

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By bios reset you mean the Clear Cmos procedure? This changes nothing at all as you noticed yourself. Only - maybe - by flashing an older Bios you do have a chance. One with older Agesa version than the current one I dare say.
 

darkhawk

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So.....in general.....
I hate AMD, because they've proven you can ruin good hardware easily with poor software. Their CPU/MB's are good hardware wise, but man, the BIOS is so poorly handled that it kills the hardware experience.

I used to recommend updating the BIOS as new ones were released, but with Ryzen, that changed. I no longer recommend that for AMD systems. Only update when something stops functioning properly. Otherwise, do not update.
AMD has proven that they can't keep a stable BIOS going, and just provide fix updates with each proceeding version. Sometimes old problems come back that were fixed in previous versions.

So honestly? If you find a BIOS that works, and works well? Don't update. Until something stops working. AMD just isn't reliable in that regard anymore.
 

ChrisS_NE

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Yeah, bios reset - clearing it.

But yes, this is deeply frustrating. I only upgraded the bios as I (foolishly) assumed it would have some improvements over the day-0. In future I'm going to hold off unless there's something specific it fixes. It's a shame as otherwise I'm really happy with the build.

I'm still working with MSI (latest is they've advised that I remove all storage devices and try again - still nothing) but I don't want to RMA it when it basically works. If it wasn't that my RAM is running @ 2133 and I need enable to SVT for VMware Workstation I'd just leave it.
 

rammetje.160202e7

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Hi
Exactly the same for me on a x570 tomahawk board in combination with a gigabyte aorus 2080 super card. During post and bios no output on DP. HDMI works fine. Once OS level starts to boot, no issues anymore.
 

sie_uk

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Well i have no issues at all and all my components are from different manufactureres. I do use an AMD gpu so perhaps they work in better harmony with AMD chipsets and CPUs than Nvidia.
3700x undervolted and oc to 4.2
Asus 5700xt undervolted and oc
Msi mag tom x570
32gb corsair ram.
Benq 144hz dp connected
Dell ips dp connected
And all good. Bios no issues
 

rammetje.160202e7

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Well i have no issues at all and all my components are from different manufactureres. I do use an AMD gpu so perhaps they work in better harmony with AMD chipsets and CPUs than Nvidia.
3700x undervolted and oc to 4.2
Asus 5700xt undervolted and oc
Msi mag tom x570
32gb corsair ram.
Benq 144hz dp connected
Dell ips dp connected
And all good. Bios no issues
Yes it's certain combinations of hw I guess, not a generic thing. Unfortunately I have no other graphics cards at my disposal to test.

All in all it's not the end of the world, just a nuisance if as long as it only impacts bios.
 
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