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Date:      Mon, 21 Sep 2020 10:14:30 -0700
From:      Pete Wright <pete@nomadlogic.org>
To:        Grzegorz Junka <list1@gjunka.com>, Jan Beich <jbeich@FreeBSD.org>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: GPU selection
Message-ID:  <8b5f31d8-225b-4fa1-298f-fe0bbef7b9cb@nomadlogic.org>
In-Reply-To: <85b0dff6-ba6d-2fd9-b321-0da2e4721f5e@gjunka.com>
References:  <2468547c-e4c8-ec5d-413f-e8f5816d9471@gjunka.com> <d02g-3qki-wny@FreeBSD.org> <85b0dff6-ba6d-2fd9-b321-0da2e4721f5e@gjunka.com>

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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

-- 
Pete Wright
pete@nomadlogic.org
@nomadlogicLA




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