<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> Make sure to quote what's already been said next time. Makes it more conveinient to follow. <blockquote type="cite"> <pre wrap="">It's pretty well guaranteed that a 500 series GeForce does not support UEFI. AFAIK, there's not a terribly high success rate with these cards either. The 600 series are generally what I consider the bottom end of working reasonably well. Otherwise there's not really enough information in your report to provide any specific advice. Thanks, Alex </pre> </blockquote> I don't think there's much to report, unfortunately. The problem is that VFIO passthroughs are made possible by a number of features and protocols introduced in the UEFI spec, which wasn't really needed on GPUs or anywhere back in 2010, when the GTX 500 series was released. When Windows 8 introduced secure boot, UEFI support accross the board became a requirement for most OEM PCs, so the vast majority of the hardware relased after that point supports it. Since secure boot had been making the news for a few months before that, I'm guessing the hardware manufacturers had also been given the heads up, so a number of 600 series card probably support it as well, like Alex said. Don't quote me on that, though, I'm looking things up as I go. If you really want to be sure on whether or not your GPU is UEFI compatible and you've already tried looking up the exact model on <a href="https://www.techpowerup.com/vgabios/?architecture=NVIDIA&manufacturer=&model=GTX+570&interface=&memType=&memSize=">TechPowerup's database</a> (it's not perfect, everything listed for my card says it's not EFI compatible), see if you can boot on a version of windows with EFI support (Windows 7+). If <a href="https://www.techpowerup.com/downloads/SysInfo/GPU-Z/">GPU-Z</a> detects your BIOS as <a href="https://hardforum.com/proxy/CKbSwA7n6I5vsWEN4M2hTs55Y2dEZAJiZ36gQuBpqPdTuA%3D%3D/image.png">UEFI compatible</a>, then you're in luck, but I wouldn't count on it. The point is, that card most probably won't work as a guest card. You could use it on the host, but you'd have to get a new card for the actual passthrough. -Nicolas <div class="moz-cite-prefix">On 2016-08-12 15:14, gerson moises wrote: </div> <blockquote cite="mid:252924986.15554565.1471029258515.JavaMail.yahoo@mail.yahoo.com" type="cite"> <pre wrap="">Dear Mr. Alex WIlliamson, I have asked before about problems using Ubuntu and Windows as guests for PCI Pass-through. As Mr. Alex said, the success rate of GTX 570 cards is not high. However, I would like to know how can I make a detailed troubleshooting in this case for report purposes, I mean is there a way I can find the cause of the problem by checking KVM or kernel logs ? I am still a beginner in this area. _______________________________________________ vfio-users mailing list <a class="moz-txt-link-abbreviated" href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/vfio-users">https://www.redhat.com/mailman/listinfo/vfio-users</a> </pre> </blockquote> </body> </html>