Date: Thu, 23 Jan 2020 17:56:20 +0000 From: greg@unrelenting.technology To: "Kurt Hackenberg" <kh@panix.com>, freebsd-x11@freebsd.org Subject: Re: support for the Picasso APU in amdgpu Message-ID: <b29e20c95c32e3b6143773d94c123344@unrelenting.technology> In-Reply-To: <50c6515d-b583-b6b7-0dff-cbd49889d487@panix.com> References: <50c6515d-b583-b6b7-0dff-cbd49889d487@panix.com> <20200123025813.129F9156E448@mail.bitblocks.com>
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January 23, 2020 8:43 PM, "Kurt Hackenberg" <kh@panix.com> wrote:=0A=0A> = On 2020-01-22 21:58, Bakul Shah wrote:=0A> =0A>> I installed drm-kmod (dr= m-fbsd12.0-kmod-4.16.g20200115 &=0A>> drm-kmod-g20190710) and also xf86-v= ideo-amdgpu-19.0.1. I see=0A>> /dev/drm/ but Xorg terminates as /dev/dri = doesn't exist.=0A> =0A> If I understand how this stuff works, you shouldn= 't install both. I think xf86-video-amdgpu makes=0A> the X server deal wi= th the GPU directly, rather than going through /dev/dri and kernel=0A> mo= de-setting. I think drm-kmod is preferred, and xf86-video-amdgpu is depre= cated.=0A=0ANo, this is completely wrong.=0A=0AOnly really ancient driver= s made the X server deal with the GPU directly.=0A=0Axf86-video-amdgpu is= very similar to the builtin 'modesetting' DDX, but it has some slight im= provements (more attempts at dealing with screen tearing).
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