<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">On 16.02.2016, at 20:24, Nicolas Roy-Renaud <<a href="mailto:nicolas.roy-renaud.1@ens.etsmtl.ca" class="">nicolas.roy-renaud.1@ens.etsmtl.ca</a>> wrote:<br class=""><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class="">
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I've been wanting to report this one for a while, but I was hoping I
could gather some more information first to have a clear idea of
what's wrong. Hopefully some people on the mailing list will be able
to help us solve this.<br class="">
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The guest GPU I'm using on my current VFIO machine is an Asus-made
GTX 970 (GTX970-DC2OC-4GD5). Although the BIOS is supposed to
support UEFI (none of those on TechPowerUp do, but running GPU-Z on
a base-metal Windows install proves mine actually does), whenever I
try to perform a firmare dump from linux with the vfio driver or
boot a VM that should claim this card, I get an "<code class="">Invalid ROM
contents</code>" error. Last month, someone else came here asking
about a similar issue, and I realized after asking a few questions
that he was trying to pass an Asus-made GTX 750 (GTX750TI-PH-2GD5).
As it turned out, he was experiencing the exact same issue I had
before and managed to work around it using the same procedure.<br class="">
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As it turns out, the problem can be avoided when mounting the card
on a live VM, which somehow bypasses the ROM check and runs without
a hitch on my machine.<br class="">
<br class="">
This has me believe that it might be a problem that's specific to
Asus cards (and perhaps only their Nvidia cards or even just their
Maxwell cards), but I'm not sure where the problem could possibly
come from and whether it's related to vfio itself or if it's an
issue on Asus' end. Either way, I'd need help from someone who's
more familiar with vfio than I am to help diagnose the issue, or
possibly someone else with the same isue so we could evaluate how
widespread the problem actually is.<br class="">
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</div></blockquote><div><br class=""></div>Hi Nicolas,</div><div><br class=""></div><div>My GPU is the the same as yours - ASUS STRIX GTX970-DC2OC-4GD5. I’ve never experienced the problem you are describing. The card has been working flawlessly with OVMF in both my old Win 8.1 VM and then with my newer Win 10 VM. Both VMs are vanilla virt-manager creations, i.e. no fancy VGA ROM files or special command-line parameters for qemu.</div><div><br class=""></div><div>Could it be due to e.g. a different GPU BIOS version? Have you reflashed/upgraded yours?</div><div><br class=""></div><div>Cheers,</div><div>Hristo</div><div><br class=""><blockquote type="cite" class=""><div class="">_______________________________________________<br class="">vfio-users mailing list<br class=""><a href="mailto:vfio-users@redhat.com" class="">vfio-users@redhat.com</a><br class="">https://www.redhat.com/mailman/listinfo/vfio-users<br class=""></div></blockquote></div><br class=""></body></html>