Question No display when I disable CSM to turn on ReBar ?

[Rafsaan]

I have an ARC A750.I need ReBar for it to perform at its best.But when I turn off CSM in the bios (which is required to turn on ReBar) my PC turns on but no signal on display.My bios is UEFI , drives are GPT . I unplugged my gpu and booted with igpu.this time I can disable CSM and it works fine.ReBar was enabled before but for some reason its disabled now.I am currently using my PC without ReBar.
Hoping to get some help...

Specs:
Mobo: Gigabyte DS3H B550M (bios: f3d up to date)
CPU: Ryzen 5 5600G
GPU: ARC A750

 

[Colif]

have you tried resetting cmos on motherboard?

 

[Rafsaan]

have you tried resetting cmos on motherboard?

Yes.Without reseting nothing comes on screen.

 

[Colif]

Have you tried using hdmi?

Are you using two displays ? If so then the port priority is HDMI > DP. I had the same problem and turned out my tv was connected to that primary HDMI port and it was in standby mode so there was no signal to my DP connection monitor. So I just swapped the ports to fix that.

link

 

[Rafsaan]

Have you tried using hdmi?


link

I am using hdmi

 

[Colif]

you could try asking Intel - https://community.intel.com/t5/Intel-ARC-Graphics/Arc-750-black-screen-on-boot/m-p/1540639


same problem with same motherboard - it seems a common problem but I can't find an answer.

 

[Rafsaan]

you could try asking Intel - https://community.intel.com/t5/Intel-ARC-Graphics/Arc-750-black-screen-on-boot/m-p/1540639


same problem with same motherboard - it seems a common problem but I can't find an answer.

I asked them as well but nobody replied.it's been 5 days.

 

[Colif]

Have you tried Gigabyte? They closed their US forums but this still exists - https://forum.giga-byte.co.uk/index.php

 

[Rafsaan]

Have you tried Gigabyte? They closed their US forums but this still exists - https://forum.giga-byte.co.uk/index.php

Let's try.I mailed them before...no response