Hi János, Unfortunately I'm not sure what the next step would be at this point. I suspect the VBIOS dump you got from Nouveau may not be correct, but this is little more than a guess. Given that the VBIOS is part of the main BIOS, you may need to extract it in some alternate way, however I can't say I know how to go about doing this. Hopefully someone else on the list will be able to provide a more useful response.
Kind regards, Jack On 12/07/16 10:47, János Horváth wrote: > Hi Jack, > > Thanks for your reply. > > I have a native Windows 8.1 64bit system in dual boot currently, so I > didn't need the bootable USB trick. > The problem is that I have already tried dumping the VBIOS with GPU-Z > and it has failed. Apparently this GTX860M Maxwell GPU is somewhat > different and GPU-Z can't save the VBIOS. I have also read that the > VBIOS in this case is not in the card itself, rather it is included in > the main BIOS of the laptop. > > Regards, > János > > On Tue, Jul 12, 2016 at 2:40 AM Jack Coulter <jsci...@jscinoz.so> wrote: > > Hi János, > > I had problems myself when trying to extract a card's firmware via > Nouveau - the resulting VBIOS images gave me the same issue in the > VM - > a subsystem ID of all zeros. On a hunch, I made a bootable Windows USB > and dumped the VBIOS with GPU-Z - this resulting binary then > worked with > VFIO. You could give this a try and see if it resolves your issue. You > can use rufus (https://github.com/pbatard/rufus) to create a live > Windows environment ("Windows to Go" is the option you're after). > > Curious to hear how this goes, as I've recently acquired an Optimus > system myself and have been wondering if KVMGT + VFIO would finally > allow for Optimus to work in a VM. > > > Kind regards, > Jack > > On 11/07/16 06:26, János Horváth wrote: > > Hi all, > > > > I'm trying to get native Windows gaming performance while running > > Linux on my Optimus laptop (Lenovo Y50). > > Hardware: > > CPU: Intel Core i7-4710HQ > > RAM: 16GB DDR3 1600MHz > > GPU: Nvidia GeForce GTX860M & Intel HD 4600 > > It supports IOMMU and all the requirements for the pci passthrough. > > > > I have found a project by Intel, KVMGT > > > > (https://01.org/igvt-g/blogs/wangbo85/2016/intel-gvt-g-kvmgt-public-release-q12016) > > which lets me share the Intel Integrated Graphics (HD 4600) between > > the host and the guest, so I thought that I could replicate the > > Optimus feature inside the VM, while the host would be running > on the > > Intel HD 4600. I installed Intel's test release to the laptop > (Ubuntu > > 14.04 64bit with kernel 4.3.0 patched with support for KVMGT, and a > > patched QEMU and SeaBios) and created a Windows 8.1 64bit VM. > > It works great, the VM recognizes the Intel HD 4600 and I am able to > > choose which machine's (host or guest) screen to show on my display. > > (By the way this (Intel's) solution is by far the best for this > > purpose as I am able to switch between which OS to show on the > > displays not having to only rely on which monitor is plugged to > which > > output) > > The problem is (as expected) with the Nvidia GTX860M. I am able to > > pass through the device, but in Windows Device Manager, it shows the > > vendor and device ID correctly, but the subsystem shows as 00000000, > > so I am of course unable to install any driver. > > I have tried to use the vBIOS of the Nvidia card with the romfile > > option of QEMU, but it does not help (I extracted the vBIOS, > which is > > not UEFI capable btw, with nouveau driver from a live system). > > > > Here is the command I use to start QEMU: > > sudo /usr/bin/qemu-system-x86_64 -m 2048 -smp 2 -M pc -name kvmgt > > -drive > > > > file=/media/hjanos/Hjanos2TB/VM/GPU/GPU-intel.img,format=raw,index=0,media=disk > > -cdrom > > > /media/hjanos/Hjanos2TB/ISO/en_windows_8.1_with_update_x64_dvd_4065090.iso > > -bios /usr/bin/bios.bin -enable-kvm -vgt -vga vgt -display sdl > > -machine kernel_irqchip=on -vgt_high_gm_sz 384 -vgt_low_gm_sz 128 > > -vgt_fence_sz 4 -cpu > > > > host,kvm=off,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff,hv_vendor_id=Nvidia43FIX > > -usb -usbdevice tablet -net nic -net > tap,script=/home/hjanos/qemu-ifup > > -net user,smb=/home/hjanos -device > > > vfio-pci,host=01:00.0,romfile=/media/hjanos/Hjanos2TB/VM/GPU/vbios.rom > > > > I need help to figure out why does the subsystem id gets changed to > > 00000000 when I pass through the Nvidia card, as I beleive that > makes > > the driver unable to install. (it is not code 43 as usual, rather it > > is code 28) > > > > Please let me know if you need any additional details. > > > > Thanks, > > Janos > > > > > > _______________________________________________ > > vfio-users mailing list > > vfio-users@redhat.com <mailto:vfio-users@redhat.com> > > https://www.redhat.com/mailman/listinfo/vfio-users > > > _______________________________________________ > vfio-users mailing list > vfio-users@redhat.com <mailto:vfio-users@redhat.com> > https://www.redhat.com/mailman/listinfo/vfio-users >
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