Upgrade to 3090 stops showing bios / post

[maarten...@gmail.com]

Hi, 

After a recent upgrade to an RTX3090 (from a GTX1080), the screen only shows an image once booted into Windows. I can enter the bios before that, but the screen stays black (and off, as far as I can tell). If I connect a standard 1080p monitor via HDMI, the bios and post is visible. 

I've switched back once to the GTX1080 and the bios/post was visible again. 

Could it be that the new 3090 series graphics card lacks support for tiled-DP-mode on lower resolutions or am I missing something?

Kind regards,

Maarten. 

[ZisWorks]

Does it work in 1080p240 mode?

I don't have a 3000 series card to test with yet.

[maarten...@gmail.com]

Hi Zis, 

When I get home tonight I'll check it out. It seems to be a graphics card issue as I didn't have a problem with an older generation card. Or perhaps it is card-specific, I'm running a Zotac 3090. 

[maarten...@gmail.com]

Well, I am unable to get an image in the post. I've tried every mode, but no active pixels, whatsoever in post/bios. For now this is fine for me as I can easily connect another monitor. however, if anyone else has a 3000 series nvidia card and can confirm my findings, that would be great :)

[matt....@gmail.com]

I'm able to use my x28 samsung in the bios with my 3090 FE card. No issues here and on the latest driver. 

[geok1ng]

just for understanding : the fall back safe mode shouldn't be single DP 4k 60hz mode?