ESXI SR-IOV & Passthrough not capable for all devi
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=25791
Printed Date: 30 Jul 2025 at 3:46pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: ESXI SR-IOV & Passthrough not capable for all devi
Posted By: Radix
Subject: ESXI SR-IOV & Passthrough not capable for all devi
Date Posted: 19 Apr 2023 at 9:08pm
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A few years ago I set up ESXi 6.7 on my desktop - it had a few linux VM's and one Windows VM with the GPU passed through to it. Everything was working great until I decided to upgrade. Original Specs: Mainboard: X570 Phantom Gaming 4 (BIOS versoin 1.20) CPU: AMD 3600X (6 core) MEM: 32GB 3200 mhz GPU 1: Quadro K4000 GPU 2 : RTX 2060 OC Upgraded Specs: Mainboard: X570 Phantom Gaming 4 (BIOS version L5.01) CPU: AMD 3700G (8 core) MEM: 64GB 3200 mhz GPU 1 : RTX 3080 TI A couple days ago I upgraded the GPU to a 3080 TI. Restarting, I could see it was available for passthrough. As the 3600X did not have built in graphics, I had an old Quadro K4000 for the graphics which the ESXi was using. The Quadro was very close and blocking airflow to the 3080 ti, so I opted to upgrade the GPU to a 5700G, to allow for integrated graphics. When I switched GPU, I got an error code, google informed me that because I had bought my mainboard before the 5000 series CPU's were released, it needed a BIOS update. I put back the old CPU, did the BIOS update and then reinstalled the new 5700G. Everything worked, but BIOS on factory settings - memory at 2100 mhz or something low - and SR-IOV disabled. Besides the output of display port being a pain (it wont send out a signal unless a monitor is detected, monitor will autoswitch to other inputs if no signal detected....) and just spamming F2 to get to BIOS before I could see anything, it would work. If i just left it to boot up, I could see the ESXi mainscreen (had to switch primary output to integrated graphics in BIOS) and I can connect to the server over my LAN as usual. However it now said SR-IOV and Passthrough "Not capable" and greyed out, where before it was black and said "disabled" and could be changed to "passthrough active". I went back into the BIOS, I set the memory speed to 3200, and enabled SR-IOV. Reboot and I am still met with SR-IOV and Passthrough "Not capable" and greyed out. I am thinking there may be some other BIOS settings I need to change, but this mainboard has a seriously complicated BIOS. https://download.asrock.com/Manual/X570%20Phantom%20Gaming%204.pdf" rel="nofollow - https://download.asrock.com/Manual/X570%20Phantom%20Gaming%204.pdf Looking at it it looks like I need to ensure SVM is enabled. When I get get a chance I will verify this, but it says it should be enabled by default. Other BIOS settings I am not clear if I should enable: Above 4G Decoding "Enable or disable 64bit capable Devices to be decoded in Above 4G Address Space (only if the system supports 64 bit PCI decoding)." I can't see any other BIOS options. Could it be the L5.01 BIOS doesnt support Passthrough? |
Replies:
Posted By: Xaltar
Date Posted: 19 Apr 2023 at 10:18pm
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I would open up a support ticket with ASRock and inquire with them. If the issue comes from the BIOS update/version they should be able to help you out. A quick google search reveals that there shouldn't be an issue using passthrough with the 5700g's iGPU so it shouldn't be a compatibility issue with it or your 3080ti. http://event.asrock.com/tsd.asp" rel="nofollow - http://event.asrock.com/tsd.asp ------------- 
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Posted By: Radix
Date Posted: 20 Apr 2023 at 4:18am
| Awesome, will try that, ty! |
Posted By: Radix
Date Posted: 22 Apr 2023 at 8:02pm
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Update: Problem Resolved had to go in BIOS to AMD CBS\NBIO and enable IOMMU. Works flawlessly. |