Re: Problem with xorg tryng to dual head setup with two graphics cards (intel and nvidia)

On 2022-07-26 03:08, Mario Marietto wrote:
> Hello to everyone.
> 
> What I'm trying to do is to correctly configure the file xorg.conf because
> I want to use two gpus at the same time connected to two different monitors
> while using FreeBSD 13.1. It could be useful when I want to make some 3d
> modelling using Blender on the first monitor / gpu [nvidia 1060 or Intel
> UHD graphics 630] and using the second one (nvidia 1060 or Intel UHD
> graphics 630) to watch some tutorials. I've also got a third gpu (geforce
> RTX 2080 ti) ,but I want to keep it free to be passed through on a bhyve
> virtual machine. On the BIOS I've configured the Nvidia Geforce 1060 as the
> GPU with which the PC boots. So,this is the scheme that I want to follow :
> 
> 
> 1) monitor AOC -> hdmi cable ---> gpu nvidia geforce 1060
> 
> 2) monitor Samsung SynchMaster ---> hdmi cable ---> gpu intel 'CoffeeLake-S
> GT2 [UHD Graphics 630]'
> 
> 3) gpu geforce RTX 2080 ti without monitor,used only to be passed thru with
> bhyve
> 
> 
> Actually I'm using this xorg.conf :
> https://pastebin.ubuntu.com/p/DhW6RHS3zb/
> 
> instead this is the Xorg.0.log file :
> https://pastebin.ubuntu.com/p/YtdPq9fngQ/
-------8<-------8<-----
> 
> Anyway,I don't have a solution. Do you ?
No. This is going to be a challenge. While I don't have a magic incantation. 
I
have a couple things that will hopefully move you closer to your mark. But
before that; is there any reason you can't simply daisy chain your 2 monitors 
to
one card to get the horizontal real estate you're after?
Anyway. You have mentioned nothing regarding the (graphics related) drivers 
you're
loading during boot. Which drivers are you loading, and how are you loading 
them?
What do they report when attempting to load them? Any errors?
On the configuration front; xorg.conf(5) has gone out of style. Configuration 
of
Xorg(1) is now done only as needed. IOW unless something doesn't just work 
out of
the box. Don't create a configuration for it. In your case, you'll probably 
want to
start by creating config files for the cards you're interested in. They 
should be
placed in: /usr/local/etc/X11/xorg.conf.d/
The naming is pretty much freestyle. In your case I might suggest; 
driver-nvidia.conf
for the geforce 1060 && driver-intel.conf for the UHD Graphics 630. The 
contents
should be:

Section "Device"
	Identifier	"Card0"
	Driver		"nvidia"
	BusID		"PCI:1:0:0"
EndSection

for the nvidia, and:

Section "Device"
	Identifier	"Card0"
	Driver		"intel"
	BusID		"PCI:0:2:0"
EndSection

for the Intel. /var/log/Xorg.0.log is your friend. A great deal of info 
needed to tweak
your setup can be derived from the output of this log.
For testing purposes; I'd recommend starting Xorg(1) thusly: Xorg -retro . 
It's better than
attempting to set/load up a Desktop environment. As you will only be dealing 
with a couple
of variables, rather than an entire DE, which can bring in it's own 
challenges. In this
case with Xorg -retro, if X starts correctly, you'll simply see a diagonal 
grid and a
mouse pointer. To bail out of the session, simply send a CTL+ALT+F1 to return 
to your
initial console, and then send a Ctrl+C to end/terminate X. Look at 
/var/log/Xorg.0.log
for clues and tweak add configs as required.

HTH

--Chris