Hi Patrick, Am Samstag, 4. November 2017, 12:58:17 CET schrieb Patrick O'Callaghan: > On Wed, 2017-11-01 at 11:03 +0000, Patrick O'Callaghan wrote: > > On Wed, 2017-11-01 at 10:01 +0100, P. Pronk wrote: > > > Ah, only just noticed its probably the same OEM card as Corey is using ;) > > > > > > For full disclosure, this is the pci-e riser I am using: > > > https://www.ebay.com/itm/Mini-PCI-E-PCI-Express-Extension1X-Riser-Card-Power-USB-30cm-Extender-Cable-4pin/361629487578 > > > > > > I really dont recommend using those ribbon type risers for that. It > > > might fit and or work but with a double slot gpu you have to bent the > > > ribbon almost 180 degrees to pass under your gpu cooler which can cause > > > the ribbon to come of the board. And then you risk short circuiting if > > > the open ends of that ribbon touch. > > > > Thanks, I don't think I need a riser, but I ordered this card, which > > several people claim works on Linux: https://www.amazon.co.uk/gp/produc > > t/B00B6ZCNGM/ref=od_aui_detailpages00?ie=UTF8&psc=1 > > I installed the above card and it's detected on Linux. Passing it > through to my Windows VM (as a PCI device) also works and I can get on > with scanning all those slides, so that's a win. > > However I found that on playing a Windows game (Mass Effect 3) I would > get a hard system freeze in the middle of play. This actually brought > down my Linux system as well. Rebooting directly into Windows (no VM) > got the same freeze, so most likely it's a bug in the game (though why > that would affect the host is a mystery). Removing the PCI passthrough > fixed the problem, i.e. no further crashes. > > I can live with restarting the VM between scanning and gaming, but a > more elegant solution would be to hotplug the PCI card in the VM. > Unplugging it works, but if I try to add it again I get a dialog box > saying it might take a while, after which the *entire system* freezes > and a hard reset of the host is the only resort. > > Is there some special magic to make this work, or is this a known bug > in QEMU/KVM and I should just forget about it?
This sounds like a common problem which occurs when you are using a GPU in a VM without Message-Signal-based-Interrupts. Please try this: * https://wiki.lime-technology.com/UnRAID_Manual_6#Enable_MSI_for_Interrupts_to_Fix_HDMI_Audio_Support * https://forums.guru3d.com/threads/windows-line-based-vs-message-signaled-based-interrupts.378044/ Hope this helps Ferdinand _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
