[vfio-users] Video out issue on Supermircro X10DRi

Tue Nov 17 21:17:25 UTC 2015

>>> 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.
>>
> Page 4-27 in your manual (page 97 of the PDF) shows "VGA Priority" option. In your bios go to the "Advanced Tab", select
> "PCIe/PCI/PnP Configuration" and it should be on that page.

Thx,
I have that one set for "Offboard". Things work with one GPU. I can
use it for the host. As soon as drop in another
GPU there seems to be a conflict between the two GPUs. Unlike AsusTek
(my mobo) SuperMicro has really good TechSupport. If I don't get this
sorted out tomorrow I'll drop them a line.

On Tue, Nov 17, 2015 at 9:30 PM, Ryan Flagler <ryan.flagler at gmail.com> wrote:
> Page 4-27 in your manual (page 97 of the PDF) shows "VGA Priority" option.
> In your bios go to the "Advanced Tab", select "PCIe/PCI/PnP Configuration"
> and it should be on that page.
>
> On Tue, Nov 17, 2015 at 2:21 PM Erik Adler <erik.adler 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.
>>
>> 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:
>> >>>>
>> >>>> *** WARNING: THE ATTACHED DOCUMENT(S) CONTAIN MACROS ***
>> >>>> *** MACROS MAY CONTAIN MALICIOUS CODE ***
>> >>>> *** Open only if you can verify and trust the sender ***
>> >>>> *** Please contact infosec at redhat.com if you have questions or
>> >>>> concerns
>> >>>> **
>> >>>>
>> >>>>
>> >>>> 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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