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Date:      Wed, 31 Oct 2018 15:32:53 -0700
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        Niclas Zeising <zeising@freebsd.org>
Cc:        Johannes Lundberg <johalun0@gmail.com>, x11-list freebsd <freebsd-x11@freebsd.org>
Subject:   Re: drm2 again
Message-ID:  <20181031223253.GA915@troutmask.apl.washington.edu>
In-Reply-To: <f28a9824-c263-4d10-107c-5ec7983dae4d@freebsd.org>
References:  <20181031172832.GA28293@troutmask.apl.washington.edu> <CAECmPwu3ndCzQa0S2hQHmyOoXQaZRAwaUjGGcApPEX3dZXH%2Byw@mail.gmail.com> <20181031194726.GA957@troutmask.apl.washington.edu> <CAECmPwsPzF-bhF0AR9PjLUJoMD7xNF=usJEa3cpnFCSvuEJkuA@mail.gmail.com> <20181031201319.GA896@troutmask.apl.washington.edu> <CAECmPwusuHsEqPArj0uYh%2B4kiEKzsFXDaiZzgcv4pmvE0WhVSw@mail.gmail.com> <f28a9824-c263-4d10-107c-5ec7983dae4d@freebsd.org>

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If I compare Xorg.0.log for drm-legacy-kmod to drm-stable-kmod,
the black screen of death seems to be related to this failure in legacy

 (II) RADEON(0): Setting screen physical size to 508 x 285
 failed to add FB for modeset
 (WW) RADEON(0): Failed to set mode on CRTC 0
 (EE) RADEON(0): Failed to enable any CRTC

The only other difference in the Xorg.log file are

legacy contains

 (II) RADEON(0): mem size init: gart size :1fdef000 vram size: s:40000000
 visible:3f7d7000
 (II) RADEON(0): VRAM usage limit set to 928850K

while stable has

 (II) RADEON(0): mem size init: gart size :3fdde000 vram size: s:40000000
 visible:3f4b4000
 (II) RADEON(0): VRAM usage limit set to 925959K

Note, the system does not have an /etc/X11/Xorg.org file.

-- 
Steve



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