Hi there,
I'm trying to setup my xorg configuration on my dual graphic card desktop system. The system has two cards, one iGPU Intel HD Graphics 530, another is a dGPU Nvidia GTX 1070 on PCIe. I plugged one monitor to the iGPU port and another to the dGPU port and let the motherboard boot from iGPU.
Right now, the fbcon works well on the iGPU, and I installed Nvidia non-free driver, and would like to run X on dGPU. I used the nvidia-xconfig to generate a Xorg configuration, and after starting Xorg, I got display from the monitor connected to dGPU, but it seems that the 3D rendering on that screen is software-based, and `glxinfo | grep vendor` showed that libglvnd on that X environment is selecting mesa as the GL library to use. With mesa being called on a dGPU connected screen, apparently it could not find a correct device to do dri, and fell back to software rendering.
Does anyone know the proper way of config X so that libglvnd could know which GL library to use correctly in this case?
Thanks, K.H.
On 06-06-17 08:55, KangJing Huang via arch-general wrote:
Hi there,
I'm trying to setup my xorg configuration on my dual graphic card desktop system. The system has two cards, one iGPU Intel HD Graphics 530, another is a dGPU Nvidia GTX 1070 on PCIe. I plugged one monitor to the iGPU port and another to the dGPU port and let the motherboard boot from iGPU.
Right now, the fbcon works well on the iGPU, and I installed Nvidia non-free driver, and would like to run X on dGPU. I used the nvidia-xconfig to generate a Xorg configuration, and after starting Xorg, I got display from the monitor connected to dGPU, but it seems that the 3D rendering on that screen is software-based, and `glxinfo | grep vendor` showed that libglvnd on that X environment is selecting mesa as the GL library to use. With mesa being called on a dGPU connected screen, apparently it could not find a correct device to do dri, and fell back to software rendering.
Does anyone know the proper way of config X so that libglvnd could know which GL library to use correctly in this case?
Thanks, K.H.
Hi,
first step is to stop using nvidia-xconfig . For most people X doesn't even start with nvidia-xconfig created config.
Your system uses Hybrid Graphics intel + nvidia , when using nvidia proprietary driver you basically have two options Bumblebee or Optimus .
Check the wikipages for both to get an idea what's possible.
Le 06/06/2017 à 11:55, LoneVVolf a écrit :
On 06-06-17 08:55, KangJing Huang via arch-general wrote:
Hi there,
I'm trying to setup my xorg configuration on my dual graphic card desktop system. The system has two cards, one iGPU Intel HD Graphics 530, another is a dGPU Nvidia GTX 1070 on PCIe. I plugged one monitor to the iGPU port and another to the dGPU port and let the motherboard boot from iGPU.
Right now, the fbcon works well on the iGPU, and I installed Nvidia non-free driver, and would like to run X on dGPU. I used the nvidia-xconfig to generate a Xorg configuration, and after starting Xorg, I got display from the monitor connected to dGPU, but it seems that the 3D rendering on that screen is software-based, and `glxinfo | grep vendor` showed that libglvnd on that X environment is selecting mesa as the GL library to use. With mesa being called on a dGPU connected screen, apparently it could not find a correct device to do dri, and fell back to software rendering.
Does anyone know the proper way of config X so that libglvnd could know which GL library to use correctly in this case?
Thanks, K.H.
Hi,
first step is to stop using nvidia-xconfig . For most people X doesn't even start with nvidia-xconfig created config.
Your system uses Hybrid Graphics intel + nvidia , when using nvidia proprietary driver you basically have two options Bumblebee or Optimus .
Check the wikipages for both to get an idea what's possible.
Not exactly true here: this is a desktop, not a laptop. So things might be a bit different (no PM at least).
I honestly never investigated this case in the libglvnd era, but there might be tricky things going on.
Could you open a forum thread and post some logs (/var/log/Xorg.*.log would be a good start) there, and link it here? I think this would be easier than having this conversation per email.
Regards, Bruno
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