[vfio-users] KMS and vfio modules: vfio fail if active with nvidia

[sL1pKn07 SpinFlo]

2016-07-24 0:40 GMT+02:00 Blank Field <ihatethisfield at gmail.com>:
>
> On Jul 24, 2016 1:33 AM, "sL1pKn07 SpinFlo" <sl1pkn07 at gmail.com> wrote:
>>
>> Hi. i found problems when active the KMS suport for my linux
>>
>> https://wiki.archlinux.org/index.php/NVIDIA#DRM_kernel_mode_setting
>>
> My phone almost hung up when i pressed "respond inline" button.
> Use pastebin or fpaste.
>>
>> 07:00.0 VGA compatible controller: NVIDIA Corporation GK110B [GeForce
>> GTX TITAN Black] (rev a1)
>> 13:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce
>> GTX 770] (rev a1)
>>
>> my vfio configuration is posted here:
>> https://www.redhat.com/archives/vfio-users/2016-February/msg00117.html
>>
>> with this fail. i can't start X and have troubles when reboot the
>> machine (the reboot is stoped)
>>
>> the Nvidia drivers is '367.27'
>>
>> and the kernel is 'Linux sL1pKn07 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun
>> 8 08:40:59 CEST 2016 x86_64 GNU/Linux'
>>
>> greetings
>
> Are you trying to do kernel mode setting on one gpu, while trying to vfio
> the other one?
> AFAIR, vesafb, uvesafb and efifb all grab the first GPU they find and fiddle
> with it.
> How does your kernel command line looks like? You'll have to deal with
> nouveau or nvidia that way or another.

linux   /boot/vmlinuz-linux
root=UUID=1b76a96e-0c70-49c5-a90b-c5308f969a2f rw  intel_iommu=on
nvidia-drm.modeset=1

how select one specific card in kms?