[vfio-users] Video out issue on Supermircro X10DRi

[Ryan Flagler]

I know on my motherboard (SuperMicro X9DR7-LN4F) they recommending setting
the VGA jumper to disabled. I think even though you can set priority in the
BIOS, setting the jumper disables onboard completely. Might be worth a shot.

On Tue, Nov 17, 2015 at 7:14 AM Erik Adler <erik.adler at gmail.com> wrote:

> >Your X11 fails to start or what?
> >If so...
> >Setting BusID parameter in xorg.conf should help starting any non primary
> GPU.
> >Whatever the host bios outputs via GTX980 shouldn't worry you much.
>
> Thanks for your input.
> Actually I don't get any video out. The only way for be to get back into
> BIOS was to pull out one of the GPUs. I needed to do this to set the BIOS
> back to internal graphics. Seems to be long before the OS kicks in.
>
> That is why I was wondering if there is a known hardware limitation. On my
> own system (Z10PE-D8) I have passed three GPUs but was using the internal
> video for the host. When I am back in my home town Ill have to give this a
> try.
>
> On Tue, Nov 17, 2015 at 6:38 AM, Blank Field <ihatethisfield at gmail.com>
> wrote:
>
>> Your X11 fails to start or what?
>> If so...
>> Setting BusID parameter in xorg.conf should help starting any non primary
>> GPU.
>> Whatever the host bios outputs via GTX980 shouldn't worry you much.
>> On Nov 17, 2015 4:57 AM, "Erik Adler" <erik.adler at gmail.com> wrote:
>>
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>>>
>>> So I am testing a Supermircro X10DRi board with a Strix GTX980 GPUs. The
>>> CPUs are dual Intel Xeon E5-2630v3.  The CPU's do not  have built in
>>> graphics but there is a video source on the mainboard. A ASPEED AST2400
>>> BMC. It is the crappy AST2400 that I am using for the host video.
>>>
>>> When I leave this facility the owners of this machine plan on later
>>> dropping in a 2ed identical GTX980 GPU for passthough. Hopefully Alex's
>>> vfio-pci-override-vga.sh can deal with that.
>>>
>>> The host machine is using BIOS not UEFI to boot. The guest is using
>>> libvirt, EDK2, qemu2.5, virt-manager and Linux 4.1.6 on Debian testing. The
>>> single Windows10 guest and GPU works flawless.
>>>
>>> The problem
>>>
>>> The AST2400 video chip sucks. I would like to drop in a cheapo Nvidia
>>> GF210 to deal with the host graphics. This is not a EFI GPU but the host is
>>> using BIOS so I would think this is not an issue. I instruct BIOS to use
>>> external video. The GTX980 is being bound to vfio-pci at init-top or as
>>> early as possible.
>>>
>>> Unfortunately I am not able to get any video out. It is as if both GPU's
>>> want to be boot-vga. I was informed in IRC that you must use a GeForce
>>> GTX980 as the boot GPU. Is that true?
>>>
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