Maybe refresh rate or resolution of your text mode is not supported on your display.

Ive always found those displayport to hdmi cords aggravating.

Would be nice if they made a bidirectional cord so you could plug in a hdmi pc to a displayport screen.

I have a simple cable that allows hdmi screen to plug into displayport , nonidea what brand but still not bi directional and yes stability and screen mode compatibility is pretty hit and miss

wierd_w wrote on 2025-10-07, 16:25:

Maybe refresh rate or resolution of your text mode is not supported on your display.

so , its about adapter? there is a 4k adapter here ? is this work maybe?

rain wrote on 2025-10-07, 16:19:

hi i know its not older hardware but i experiencing some problem here. my gpus hdmi port is died. and wanna use displayport instead.

so get this adapter. but now bios logo and bios screen not showing up. but after selection windows boot succesfully.

An DisplayPort-to-HDMI cabel is simply a signal level shifter, not a protocol converter.
The first problem may be the lack of a DDC wires that reads the monitor's EDID.
That is, its model name and modes. If Windows displays the monitor as generic, that's it.
The second problem is that the DisplayPort output can only be switched to pseudo-HDMI mode by the driver.
If the driver doesn't load, there's no display.
And the question is: is the problem in the BIOS or the UEFI?
UEFI with an active GOP driver reads the monitor's parameters and displays everything at maximum, both resolution and refresh rate.
And the BIOS—I don't remember, 640x480? The monitor itself may not be able to handle it.
There are much fewer problems with the HDMI-DVI cable; it is completely passive. If the video card has such an output.

shevalier wrote on 2025-10-07, 16:54:

An DisplayPort-to-HDMI converter is simply a signal level shifter. The first problem may be the lack of a DDC wires that reads t […]
Show full quote

rain wrote on 2025-10-07, 16:19:

hi i know its not older hardware but i experiencing some problem here. my gpus hdmi port is died. and wanna use displayport instead.

so get this adapter. but now bios logo and bios screen not showing up. but after selection windows boot succesfully.

An DisplayPort-to-HDMI converter is simply a signal level shifter.
The first problem may be the lack of a DDC wires that reads the monitor's EDID.
That is, its model name and modes. If Windows displays the monitor as generic, that's it.
The second problem is that the DisplayPort output can only be switched to pseudo-HDMI mode by the driver.
If the driver doesn't load, there's no display.
And the question is: is the problem in the BIOS or the UEFI?
UEFI with an active GOP driver reads the monitor's parameters and displays everything at maximum, both resolution and refresh rate.
And the BIOS—I don't remember, 640x480? The monitor itself may not be able to handle it.

my bios using legacy boot , not uefi , what you suggest?

There are much fewer problems with the HDMI-DVI cable; it is completely passive. If the video card has such an output

shevalier wrote on 2025-10-07, 17:13:

There are much fewer problems with the HDMI-DVI cable; it is completely passive. If the video card has such an output

There is Dvi port on gpu but its promlematic with linux. does another cable may work?

If we assume it's the 'bios is displaying 640x480 50hz, display hates it' problem, a scandoubler would reaveal it.

As would another monitor, like an old hdmi 4:3 ratio jobbie.

If you have such a beast, some diagnostic testing will give you an answer if an intelligent scandoubler will solve your problems or not. (These are not cheap. You should do the inexpensive test, if you can, first.)

If the problem is EDID/DCC, a different converter might fix it. (I've had this problem with mini displayport on some SoCs, that would not talk to any monitor at all, until I switched to a better adapter.)

If the problem is about encoding format, then newer monitors that know about DP are the way to go. (But if you do that, why even use an adapter?)

Every approach has its warts on it.

rain wrote on 2025-10-07, 16:19:

hi i know its not older hardware but i experiencing some problem here. my gpus hdmi port is died. and wanna use displayport instead.

so get this adapter. but now bios logo and bios screen not showing up. but after selection windows boot succesfully.

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics:
https://www.techpowerup.com/244981/nvidia-has … -update-can-fix

Latest version of DisplayPort 1.3/1.4 fix:
https://www.nvidia.com/en-us/drivers/nv-uefi-update-x64/

ott wrote on 2025-10-08, 05:41:

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics: https://www.techpowerup.com/244981/nvidia-has … -update-ca […]
Show full quote

rain wrote on 2025-10-07, 16:19:

hi i know its not older hardware but i experiencing some problem here. my gpus hdmi port is died. and wanna use displayport instead.

so get this adapter. but now bios logo and bios screen not showing up. but after selection windows boot succesfully.

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics:
https://www.techpowerup.com/244981/nvidia-has … -update-can-fix

Latest version of DisplayPort 1.3/1.4 fix:
https://www.nvidia.com/en-us/drivers/nv-uefi-update-x64/

No my gpu is rx 570 amd. Is there any software for amd?

rain wrote on 2025-10-08, 09:59:

ott wrote on 2025-10-08, 05:41:

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics: https://www.techpowerup.com/244981/nvidia-has … -update-ca […]
Show full quote

rain wrote on 2025-10-07, 16:19:

hi i know its not older hardware but i experiencing some problem here. my gpus hdmi port is died. and wanna use displayport instead.

so get this adapter. but now bios logo and bios screen not showing up. but after selection windows boot succesfully.

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics:
https://www.techpowerup.com/244981/nvidia-has … -update-can-fix

Latest version of DisplayPort 1.3/1.4 fix:
https://www.nvidia.com/en-us/drivers/nv-uefi-update-x64/

No my gpu is rx 570 amd. Is there any software for amd?

Which one?
The RX5x0 works perfectly via DVI and HDMI in both BIOS and UEFI.
Besides, such a video card usually has two HDMI ports.
Managed to burn both of them?

shevalier wrote on 2025-10-08, 11:49:

Which one? The RX5x0 works perfectly via DVI and HDMI in both BIOS and UEFI. Besides, such a video card usually has two HDMI por […]
Show full quote

rain wrote on 2025-10-08, 09:59:

ott wrote on 2025-10-08, 05:41:

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics: https://www.techpowerup.com/244981/nvidia-has … -update-ca […]
Show full quote

This is a known issue if you have a Nvidia's Maxwell/Pascal graphics:
https://www.techpowerup.com/244981/nvidia-has … -update-can-fix

Latest version of DisplayPort 1.3/1.4 fix:
https://www.nvidia.com/en-us/drivers/nv-uefi-update-x64/

No my gpu is rx 570 amd. Is there any software for amd?

Which one?
The RX5x0 works perfectly via DVI and HDMI in both BIOS and UEFI.
Besides, such a video card usually has two HDMI ports.
Managed to burn both of them?

Rx 570 itx model. Has only 1 hdmi -died-

and 1 dvi , 1 dp.

Using dvi to hdmi adapter some problems with os. Like garbled fonts..

rain wrote on 2025-10-08, 11:55:

Rx 570 itx model. Has only 1 hdmi -died- […]
Show full quote

shevalier wrote on 2025-10-08, 11:49:

Which one? The RX5x0 works perfectly via DVI and HDMI in both BIOS and UEFI. Besides, such a video card usually has two HDMI por […]
Show full quote

rain wrote on 2025-10-08, 09:59:

No my gpu is rx 570 amd. Is there any software for amd?

Which one?
The RX5x0 works perfectly via DVI and HDMI in both BIOS and UEFI.
Besides, such a video card usually has two HDMI ports.
Managed to burn both of them?

Rx 570 itx model. Has only 1 hdmi -died-

and 1 dvi , 1 dp.

Using dvi to hdmi adapter some problems with os. Like garbled fonts..

I don't know.
Sometimes I use a very cheap (even without ferrite filter) 1.8 meter HDMI-DVI cable bought at the local store.
Full HD at 60 Hz, even FreeSync (if using the monitor's HDMI), and sound work.
Under Windows 11.

I think going to buy new cable . thanks for replies.