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Date:      Tue, 22 Sep 2020 08:11:56 +0000
From:      Grzegorz Junka <list1@gjunka.com>
To:        Pete Wright <pete@nomadlogic.org>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: GPU selection
Message-ID:  <b20ded2d-4861-3d1d-69ab-bd1d3f94f464@gjunka.com>
In-Reply-To: <8b5f31d8-225b-4fa1-298f-fe0bbef7b9cb@nomadlogic.org>
References:  <2468547c-e4c8-ec5d-413f-e8f5816d9471@gjunka.com> <d02g-3qki-wny@FreeBSD.org> <85b0dff6-ba6d-2fd9-b321-0da2e4721f5e@gjunka.com> <8b5f31d8-225b-4fa1-298f-fe0bbef7b9cb@nomadlogic.org>

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On 21/09/2020 17:14, Pete Wright wrote:
>
>
> On 9/21/20 12:09 AM, Grzegorz Junka wrote:
>> On 21/09/2020 00:45, Jan Beich wrote:
>>> Grzegorz Junka <list1@gjunka.com> writes:
>>>
>>>> With the new drm-kmod, is it possible to specify which card should be
>>>> used for X11?
>>> Do you mean BusID in xorg.conf(5) ?
>>
>> That's the reason why I am asking, in the new X11 there is no 
>> xorg.conf file. At least I don't seem to be able to find one. It's 
>> all configured automatically through mode setting if I understand 
>> this correctly?
>
> You can still use an xorg.conf with xorg-1.20.x, but the recommend 
> method is to let auto-detection work.  what i do is drop configuration 
> snippets in /usr/local/etc/x11/xorg.conf.d/.  for example when testing 
> out adjustments to my GPU I have a file 10-amdgpu.conf which includes 
> the pertinent configuration section for that device - for example:
>
> Section "Device"
>     Identifier  "Card0"
>     Driver      "amdgpu"
>     BusID       "PCI:38:0:0"
> EndSection
>
> hope this is helpful,
> -pete
>
Yes, this helps. Thanks. If I understand this correctly, this would be 
needed if I wanted to use both cards, otherwise I can just install 
either NVidia or AMD driver and they would pick up the right hardware as 
the default one to use with xorg automatically?

GrzegorzJ




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