[SOLVED] DP no signal on Boot ?

[Juniorak1]

Well i don't know how to fix this...

PC Specs
OS: Windows 11 Pro
Motherboard: Gigabyte Z390 Gaming X
CPU: Intel Core i7 9700k
GPU: ASUS GeForce GTX 1070 Strix OC

DisplayPort: DELL S2721DGF Monitor
HDMI: LGTV 55SJ850V

When i Format my PC i have signal on my monitor (DP) on boot, but after i configure all the settings (TPM 2.0 Active, Secure Boot ON, RAID 0, etc.) then the signal goes to HDMI (LG TV). However, if i want to use the HDMI (LG TV) source, i must turn off DP source (DELL Monitor) otherwise there is no way to have signal on both devices.
Any Solution?

 

[Barty1884]

In BIOS? Or Windows? BIOS will only display on a single source, whichever is determined to be primary (and it's usually pretty arbitrary).

 

[Juniorak1]

In BIOS? Or Windows? BIOS will only display on a single source, whichever is determined to be primary (and it's usually pretty arbitrary).

In BIOS. I would like to have DP, but I can't. I always have to turn on my TV, switch the source to PC and finally turn off my Monitor. The thing is that even if I disconnect the HDMI, i don't get BIOS signal.

 

[Barty1884]

That is strange. Usually the first (or sole) connected display is where the BIOS will display.
That being said, I have seen this before - on both a 780 and 950 where only HDMI will show the BIOS. Had something to do with the refresh rate of the monitor.... but it's been a while & I don't recall if I ever resolved.

Sorry I can't be any more assistance.

 

[Juniorak1]

That is strange. Usually the first (or sole) connected display is where the BIOS will display.
That being said, I have seen this before - on both a 780 and 950 where only HDMI will show the BIOS. Had something to do with the refresh rate of the monitor.... but it's been a while & I don't recall if I ever resolved.

Sorry I can't be any more assistance.

It's ok mate, anyway thanks for your instant response.

 

[Juniorak1]

I can't believe that after almost 1 year i found accidentally the solution by myself! In no other Forum/Site found this solution which is very simple.
Firmware had to be updated in order to support DP v1.3/1.4 on Boot!!! FINALLY

NVIDIA Graphics Firmware Update Tool for DisplayPort 1.3 and 1.4 Displays

TOPIC CAN BE CLOSED!

 

[drivinfast247]

If I have HDMI plugged in it'll bypass the boot screen on my monitor connected via DP.

 

[Juniorak1]

If I have HDMI plugged in it'll bypass the boot screen on my monitor connected via DP.

Did you download the firmware?

 

[drivinfast247]

Did you download the firmware?

No. It doesn't bother me. Good to know, though.