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Date:      Thu, 2 Aug 2018 18:16:17 -0500
From:      CL Moonriver <clmoonriver@equinedreams.art>
To:        Greg V <greg@unrelenting.technology>, Pete Wright <pete@nomadlogic.org>
Cc:        freebsd-x11@freebsd.org, pkubaj@anongoth.pl
Subject:   Re: X11 not working on 11-STABLE with AMDGPU
Message-ID:  <73d85e29-be1d-a8a8-0fe9-81889a4a429f@equinedreams.art>
In-Reply-To: <1533215599.23824.0@hraggstad.unrelenting.technology>
References:  <20180801092849.GA75303@KGPE-D16> <95b8cfa0-0908-3321-5155-ef49b1bb0a64@equinedreams.art> <20180801141207.GA5202@smtp.iq.pl> <d4f521ba-eaa7-1464-d7b6-b28560781bfc@nomadlogic.org> <4266f156-3a83-a45d-fab0-cde090c139ba@equinedreams.art> <67630578-f418-b435-9bb0-b40f12e9d881@nomadlogic.org> <1533215599.23824.0@hraggstad.unrelenting.technology>

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Thanks for the heads up.

Are you sure this is still relevant in drm-next? I don't see any dmesg 
error about disabling GPU acceleration. I did what you suggested, but 
nothing seems to have changed except I get no text until radeonkms has 
loaded (I don't get garbage I get nothing at all). I still get dmesg 
errors regarding ring test failures and such, so turning the EFI 
framebuffer off doesn't appear to have actually changed anything.


On 8/2/18 8:13 AM, Greg V wrote:
> Hi everyone,
>
> Please keep in mind that both radeonkms and amdgpu from drm-*-kmod 
> currently conflict with the EFI framebuffer.
>
> https://github.com/FreeBSDDesktop/DEPRECATED-freebsd-base-graphics/issues/170 
>
>
> I currently have hw.syscons.disable=1 in boot/loader.conf to work 
> around that.
> That knob literally turns the EFI framebuffer off, so in between the 
> boot loader screen and the GPU driver loading, there will be garbage 
> on screen :) if the driver fails to load, you keep the garbage. If you 
> want to debug the driver with this workaround on (read dmesg, try 
> loading, etc.) you have to SSH into the box.
>



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