B550 PG Velocita + Intel ARC A770

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   Hi ASRock Forums,

I just wanted to note that I have been trying to use my A770 GPU on the PG B550 Velocita board and it's reporting strange things for Reziable BAR. Other people with different B550 boards are reporting no issue.

It's all enabled in BIOS and ReBAR was working with these settings with a 3070 GPU Previously.

I have tried ASRock Motherboard BIOS 2.30 and 2.40 to no avail.

Intel Driver Tool reports no ReBAR- provides link to ASRock Support

Intel ARC Control reports no ReBAR

GPU-Z Reports ReBAR Enabled

Windows Device Manager Reports ReBAR Enabled

I know it's early days with Intel ARC and I posted on the Intel/ARC discord they said likely that it's running - but they're reporting it wrong. Given the important of ReBAR on this GPU, it might be worth finding out how to fix the reporting!! 

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spitex Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Oct 2022 Status: Offline Points: 35	Post Options Post Reply Quote spitex Report Post Thanks(0) Quote Reply Topic: B550 PG Velocita + Intel ARC A770 Posted: 25 Oct 2022 at 5:32pm
	Hi ASRock Forums, I just wanted to note that I have been trying to use my A770 GPU on the PG B550 Velocita board and it's reporting strange things for Reziable BAR. Other people with different B550 boards are reporting no issue. It's all enabled in BIOS and ReBAR was working with these settings with a 3070 GPU Previously. I have tried ASRock Motherboard BIOS 2.30 and 2.40 to no avail. Intel Driver Tool reports no ReBAR- provides link to ASRock Support Intel ARC Control reports no ReBAR GPU-Z Reports ReBAR Enabled Windows Device Manager Reports ReBAR Enabled I know it's early days with Intel ARC and I posted on the Intel/ARC discord they said likely that it's running - but they're reporting it wrong. Given the important of ReBAR on this GPU, it might be worth finding out how to fix the reporting!!

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 25073	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 25 Oct 2022 at 8:46pm
	I would fire off a support ticket to both ASRock and intel: ASRock Tech Support: https://event.asrock.com/tsd.asp Intel Tech Support: https://supporttickets.intel.com/servicecenter?lang=en-US At this early stage it could be an issue with Intel's drivers or ASRock's BIOS for your particular board. Given the feature worked on your Nvidia card I suspect intel may be where the issue lies. Either way however, I suspect ASRock Tech support will likely already be aware of the issue and should be able to advise you.


spitex Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Oct 2022 Status: Offline Points: 35	Post Options Post Reply Quote spitex Report Post Thanks(0) Quote Reply Posted: 05 Nov 2022 at 5:04pm
	Just a FYI - Disabling Virtualisation in the B550 Velocita BIOS made this problem go away.