[vfio-users] New computer assembled, need help

[ALG Bass]

Well, I've gotten Windows 10 installed under virt-manager. Working on
getting the gtx 970 drivers installed and working (code 43 stuff).
Right now the output is to a vnc window. I have the gtx 970 hooked up to my
monitor on another input. How do I change it to have the display for the VM
go to the monitor instead of the vnc window?

On Wed, Sep 23, 2015 at 5:57 PM, ALG Bass <olorin12 at gmail.com> wrote:

> Got up to step 5, displaying on second gpu, we are happy! Will go from
> here, thanks for your help!
>
> On Wed, Sep 23, 2015 at 5:44 PM, ALG Bass <olorin12 at gmail.com> wrote:
>
>> Also, I'm concerned that I'm not getting any display from the second card
>> while the first card is plugged in *outside of Linux* as well. Could that
>> indicate that the problem isn't in Linux at all?
>>
>> On Wed, Sep 23, 2015 at 5:42 PM, ALG Bass <olorin12 at gmail.com> wrote:
>>
>>> for step 4, is that the 02:00.0 I get for my second card with 'lspci |
>>> grep VGA'?
>>>
>>>
>>> On Wed, Sep 23, 2015 at 5:11 PM, Blank Field <ihatethisfield at gmail.com>
>>> wrote:
>>>
>>>> Aww, we forgot to include the mailing list and my message with the
>>>> steps is left private:(
>>>> About PSUs: usually they are rated by output power, and it is written
>>>> in a small table of voltage-ampere specs on its' case.
>>>> So yeah, if a PSU is rated 250W but 50% eff., it consumes ~500W off the
>>>> network. And there is a power factor playing since we have an alternating
>>>> current.
>>>> Moreover, my system with 3 low power GPUs consumes only 101W with a
>>>> statically overclocked CPU.
>>>> When the GPU is offline and/or idle it consumes almost zero power and
>>>> the PSU is underloaded. So follow my advice, we can get it going. Just be a
>>>> little bit more verbose.
>>>> On Sep 23, 2015 11:51 PM, "ALG Bass" <olorin12 at gmail.com> wrote:
>>>>
>>>>> Well, I reinstalled Fedora in full UEFI. No dice - no mirrored
>>>>> display. I have an EVGA Supernova 750W B2 80+ Bronze PSU, and with 80%
>>>>> efficiency it should be giving me 600W. With the FX-8350, the GTX 970 and
>>>>> GTX 750ti, I figured it would be enough, but it might be that I'm just not
>>>>> getting enough power?
>>>>> I emailed Asrock and they told me to update my 'BIOS' - instant flash
>>>>> - which I did (it updated the UEFI). Still no dice.
>>>>> At this point, I'm probably going to stick to dual-booting, as I need
>>>>> Photoshop for school. I think I'll try again later with a more powerful PSU
>>>>> and see if that does the trick.
>>>>>
>>>>> On Wed, Sep 23, 2015 at 2:32 PM, Blank Field <ihatethisfield at gmail.com
>>>>> > wrote:
>>>>>
>>>>>> When the host GPU drivers are loaded, they do not care about VGA
>>>>>> access and make the second card output video.
>>>>>> The first card has it's VGA stuff dedicated to the VM. Since we can
>>>>>> only have one active VGA device per machine and most motherboards (except
>>>>>> gigabyte) assume the first card is the main one - the first GPU is assigned
>>>>>> to work with VGA.
>>>>>>
>>>>>> Anyway, what you need to do to achieve almost 100 happiness:
>>>>>> 0. Uninstall software like Plymouth that uses VGA and framebuffer to
>>>>>> draw some filthy loading progress bar.
>>>>>> 1. Plug a screen into second gpu's output.
>>>>>> 2. Boot the host headless without X server. You will use first card's
>>>>>> VGA capabilities.
>>>>>> 3. Install NVidia proprietary(i haven't tested nouveau) drivers on
>>>>>> host.
>>>>>> 4. Add BusID entry with PCI Bus:Dev:Func combo of the second (host)
>>>>>> GPU into Device section of xorg.conf
>>>>>> 5. Reboot with X server. The output should appear on the screen that
>>>>>> is attached to the second GPU.
>>>>>> 6. Make and check that the first GPU ia bound to vfio-pci and doesn't
>>>>>> own or decode anything in /dev/vga_arbiter while the VM is not running.
>>>>>> 7. Fire up the VM.
>>>>>> 8. Install guest device drivers.
>>>>>>
>>>>>> Alternative path: screw all this, boot host with pure UEFI(no CSM!)
>>>>>> mode, make an OVMF based guest, done.
>>>>>> On Sep 23, 2015 9:15 PM, "ALG Bass" <olorin12 at gmail.com> wrote:
>>>>>>
>>>>>>> Sorry, I'm still newbish at this.
>>>>>>>
>>>>>>> So you're saying it is possible to only have one gpu, and switch the
>>>>>>> host to 'headless' while the VM is running, having switched the gpu to
>>>>>>> running the guest? Are there any tutorials detailing how to do this?
>>>>>>>
>>>>>>> Thanks.
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Sep 23, 2015 at 6:35 AM, Blank Field <
>>>>>>> ihatethisfield at gmail.com> wrote:
>>>>>>>
>>>>>>>> If the host system uses VGA - only one device can be outputting
>>>>>>>> video.
>>>>>>>> If the host system and both cards are capable of providing
>>>>>>>> GOP(UEFI) then the output can be(on my system it is) mirrored between them
>>>>>>>> all.
>>>>>>>> You can have the host headless.
>>>>>>>> You can install both cards, boot the host, install the host drivers
>>>>>>>> specifying device BusID in xorg.conf.
>>>>>>>> The primary card handles all host VGA including text terminals like
>>>>>>>> tty2.
>>>>>>>> When the primary GPU is not used by the host at all, you can use it
>>>>>>>> with vfio.
>>>>>>>> On Sep 23, 2015 1:08 PM, "ALG Bass" <olorin12 at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Okay, I just got all my parts and got my computer assembled. Here
>>>>>>>>> are the relevant parts:
>>>>>>>>>
>>>>>>>>> Asrock 970m Pro3 micro-atx motherboard (has PCIe x16 and PCIe x4
>>>>>>>>> slots)
>>>>>>>>> AMD FX8350
>>>>>>>>> 16 gb ram
>>>>>>>>> 2 graphics cards:
>>>>>>>>> Geforce GTX 970 in PCIe x16 slot
>>>>>>>>> Geforce GTX 750 ti in PCIe x4 slot
>>>>>>>>>
>>>>>>>>> I get display out of the GTX 970. When I plug in the GTX 750 ti I
>>>>>>>>> get nothing - no display at all. When I have just the 750ti plugged in, in
>>>>>>>>> either slot, I get display. For some reason when two cards are plugged in,
>>>>>>>>> display only comes from the card in the x16 slot, as if the mobo only wants
>>>>>>>>> to run them as SLI.
>>>>>>>>>  I was planning on using the 750ti as my Linux graphics card and
>>>>>>>>> the GTX 970 as my Winders gaming graphics card.
>>>>>>>>> Anyone else had this problem? And is it possible for me to just
>>>>>>>>> have the 970 plugged in and pass it through, leaving the Linux host with
>>>>>>>>> nothing until I shut down the VM, in case I can't get the 750ti to work as
>>>>>>>>> my Linux graphics card?
>>>>>>>>>
>>>>>>>>> Thanks!
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> vfio-users mailing list
>>>>>>>>> vfio-users at redhat.com
>>>>>>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>
>>>
>>
>
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