[vfio-users] Video out issue on Supermircro X10DRi

[Erik Adler]

> 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.

There is a jumper to disable graphics on this mobo. Ill be sure to try
it out at first chance. I can't find anything about gpu priority in
the bios though.

On Tue, Nov 17, 2015 at 6:00 PM, Ryan Flagler <ryan.flagler at gmail.com> wrote:
> 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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>>
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