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MSI B350M Mortar doesn't post with 2 video cards

post #1 of 5
Thread Starter 
It posted fine on BIOS 1.1, but after flashing to ver 1.2 it doesn't post with 2 video cards. It will post fine with either card in either slot on their own though. Weirdest part is the debug led's hang on DRAM with both cards installed. I've tried turning the RAM down to 2133 and booting a single stick. Both sticks run fine at 2933 together with one card and on the previous BIOS. I'll probably just use one card and dual boot for now, but I was wanting to play around with IOMMU and VGA passthrough. The cards are a GT 630 Rev 2 (GK208) and a HD 7750, I'll try a HD 7790 tonight and see if I get different results. Just thought it was weird and wondered if anyone had any ideas what might cause that kind of odd behavior.

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post #2 of 5
I have problem with ver 1.2 too, after update, my ram can no loner post at 3200 doesn't matter how I try it so I went back to 1.1 ... for now, hope next version will fix the problem.
post #3 of 5
Thread Starter 
I ended up rolling back to 1.1 as well. I was able to manually set my RAM speeds back to 2933 and post with the HD 7790 and GT 630 installed.

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post #4 of 5
Thread Starter 
Version 1.3 is posted now, I loaded it last night and now it posts with 2 cards and the XMP profiles works. Boot time was significantly improved as well. I am just letting everything ride for now, I've got a speech class I have been neglecting that I need to finish. So for now I'm booting windows and using virtualbox to run my linux SSD as a VM. I'll come back to trying to IOMMU the VGA in a Windows virtual when I have more time.
post #5 of 5
LOL, I had the oppersite problem to you guys, bios 1.3 (13) stopped my ram from posting or booting at 3200mhz, best it will do is 2933mhz now, so I back flashed to 1.2(12) where everything is ok.

Im running 16gb G.Skill Trident Z RGB CL16 3200mhz @ 3200mhz

There is however a beta bios out for this board, not tried it yet, but we should see the final release in a week or so, so I may just wait, its 1.41 here: https://forum-en.msi.com/index.php?topic=283344.0
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