Keyser Soze Posted July 5, 2015 Share Posted July 5, 2015 The soundcard I'm trying to use is an AMD Caicos HDMI Audio [Radeon HD 6400 Series] which is on my GPU card XFX R5 230. This happens on my Win8.1, Ubuntu 15.04 VMs. Otherwise, the VMS seem to be working fine but without sound. M/B: ASRock - FM2A85X Extreme4-M CPU: AMD A10-5800K APU with Radeon HD Graphics @ 3800 Thanks for the help. Quote Link to comment
jonp Posted July 6, 2015 Share Posted July 6, 2015 Some AMD cards are known to have this problem (doesn't seem to affect NVIDIA devices). Can you try using on-board audio as opposed to the audio device on the GPU? Most motherboards have an onboard analog or HD audio device. Quote Link to comment
Keyser Soze Posted July 8, 2015 Author Share Posted July 8, 2015 Thank you for clarifying that. Unfortunately, the VMs won't launch with the onboard soundcard . I get an error, most likely iommu conflict. I tried an evga gtx 750 and that comes up with just a blank screen. Quote Link to comment
jonp Posted July 9, 2015 Share Posted July 9, 2015 Could be a faulty IOMMU implementation on the motherboard. I've seen this more with AMD than Intel class chipsets so far, but it can affect both. I would wager the 750 from evga would work fine on my motherboard. You could try OVMF mode. Quote Link to comment
Keyser Soze Posted July 9, 2015 Author Share Posted July 9, 2015 Yeah, the mb didn't initially have iommu. I had to do a bios update. I tried Ovmf before as well gives me a blank screen. Quote Link to comment
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