How to activate IOMMU in 960GC-GS FX

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   I have upgraded my processor to AMD FX 4300 and my RAM to Corsair Vengeance 2 x4 GB 1600MHz. I am trying to install Qubes OS 4.0 which requires AMD-V with RVI (Rapid Virtual Indexing) and  AMD-Vi (aka IOMMU). I have hardware assisted virtualization enabled in the BIOS. However I am facing a message that says IOMMU is not active on your machine by the Qubes 4.0 . As far as my knowledge goes FX 4300 is capable of AMD-Vi (IOMMU). So, any clue why am I facing this message. Am I missing something ??? What changes do I have to make in BIOS ?
Please help me out as I have spend quite a bit of my savings to upgrade my processor and RAM. I come from a poor part of the world.

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oc2018enthu Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Sep 2018 Location: Kolkata Status: Offline Points: 10	Post Options Post Reply Quote oc2018enthu Report Post Thanks(0) Quote Reply Topic: How to activate IOMMU in 960GC-GS FX Posted: 17 Oct 2018 at 3:00am
	I have upgraded my processor to AMD FX 4300 and my RAM to Corsair Vengeance 2 x4 GB 1600MHz. I am trying to install Qubes OS 4.0 which requires AMD-V with RVI (Rapid Virtual Indexing) and AMD-Vi (aka IOMMU). I have hardware assisted virtualization enabled in the BIOS. However I am facing a message that says IOMMU is not active on your machine by the Qubes 4.0 . As far as my knowledge goes FX 4300 is capable of AMD-Vi (IOMMU). So, any clue why am I facing this message. Am I missing something ??? What changes do I have to make in BIOS ? Please help me out as I have spend quite a bit of my savings to upgrade my processor and RAM. I come from a poor part of the world.
	960GC GS-FX, AMD FX4300, Corsair Vengeance DDR3 1600MHz 8GB.MSI N560GTXTi Hawk.

xhue Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 17 Aug 2018 Status: Offline Points: 634	Post Options Post Reply Quote xhue Report Post Thanks(0) Quote Reply Posted: 17 Oct 2018 at 3:40am
	I'm afraid this mobo doesn't support IOMMU. In fact I think the chipset doesn't support IOMMU. If internet is to be trusted, IOMMU support starts with the 9xx series chipsets for the AM2/3 platform. According to these guys you won't start QubeOS 4.x w/o IOMMU, or you'd need some very ugly hack to do so. https://groups.google.com/forum/#!msg/qubes-users/UnyDPtvmoao/ehScPFvlAgAJ Sorry, but it smells like a new mobo. :-(

oc2018enthu Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Sep 2018 Location: Kolkata Status: Offline Points: 10	Post Options Post Reply Quote oc2018enthu Report Post Thanks(0) Quote Reply Posted: 17 Oct 2018 at 9:10pm
	Thanks, it seems that you have done extensive research on the issue and have found my post in google groups on Qubes 4.0 rc 1 and rc 2. I was using AMD Athlon X2 5200 and 800 MHz 4GB DDR2 RAM then. I had upgraded to the new hardware with a wish to run Qubes 4.0 and some other general purpose after spending a part of my savings albeit they are used hardware. Although this is not a current mobo and has been discontinued by Asrock quite a few years now( I got this exchanged with an identical board in RMA), I am quite dissapointed right now as this board supports AM3/AM3+ but does not have IOMMU supported.
	960GC GS-FX, AMD FX4300, Corsair Vengeance DDR3 1600MHz 8GB.MSI N560GTXTi Hawk.