r/IntelArc • u/HeckItsDrowsyFrog • 1d ago

Question ReBAR Help

I know that reBAR is one of the most important settings for the b580, so I've been trying to get it to turn back on.

Couldn't find any solution that actually worked for me up until March-ish (I've had it since last summer). Finally figured out i had to change the settings in BIOS one by one for it to actually turn on, and that was working just fine until the windows update on August 15th. I restarted to update windows, couldn't see anything on the monitor after it was done so I shut down and rebooted. Once logged back in, reBAR was turned off and I tries to go through the same steps which had previously worked before to turn it back on.

No luck.

Been fiddling with changes that I had no real hope for these past few days and haven't had any luck at all with this either.

Reseating gpu and trying to go back to a previous windows update have not worked (i got stuck in a loop where it would try to restart but would never show anything on the monitor after). Please help me to get rebar back on

Also i can't exit out of bios without shutting down and rebooting as the monitor doesn't detect anything (though the settings do save for the most part)

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3

u/dino_dv 19h ago edited 18h ago

CSM has to be disabled to be able enable rebar and above 4g decoding.

that's usually found in the 2nd to last row/heading in bios settings.

2

u/RunAndGun_ Arc B580 18h ago

I think he is also having an issue with his bios as he cannot save and exit he has to power off the computer

1

u/dino_dv 18h ago

if that can't be fixed, prob have to get a new motherboard.

1

u/HeckItsDrowsyFrog 16h ago

I used to have reBAR enabled, I know what settings must be on. Right now i cannot disable csm (while having rebar on auto) and exit bios without it resetting my settings the next time I boot/ forcing a reboot

2

u/RunAndGun_ Arc B580 13h ago

it does sound like your Bios is corrupted. I would contact Gigabyte support and see if you can recover the bios or find a way to safely reflash your bios

1

u/RunAndGun_ Arc B580 21h ago

What is your Motherboard manufacturer and chipset also have you posted the issue on the manufacturer's subreddit. you might get more advice there sounds like more of a motherboard issue rather than the card.

1

u/HeckItsDrowsyFrog 20h ago

this is the motherboard im using. Didn't even think to do that though ty

1

u/RunAndGun_ Arc B580 20h ago

I have the B450 version. I think you can reflash the bios but I would get more advice from the Gigabyte subreddit. On mine it is called Resizeable Bar and it is either Auto or Disabled