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Date:      Thu, 1 Nov 2018 16:09:46 +0100
From:      Niclas Zeising <zeising@freebsd.org>
To:        sgk@troutmask.apl.washington.edu
Cc:        x11-list freebsd <freebsd-x11@freebsd.org>
Subject:   Re: drm2 again
Message-ID:  <40c7a6a7-92a5-688d-d13f-e84680402b1c@freebsd.org>
In-Reply-To: <20181101145542.GA6969@troutmask.apl.washington.edu>
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> <20181031223253.GA915@troutmask.apl.washington.edu> <3192fe24-488d-87ab-2b50-348cbedf1484@freebsd.org> <20181101145542.GA6969@troutmask.apl.washington.edu>

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On 11/1/18 3:55 PM, Steve Kargl wrote:
> On Thu, Nov 01, 2018 at 09:12:32AM +0100, Niclas Zeising wrote:
>> On 10/31/18 11:32 PM, Steve Kargl wrote:
>>> 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.
>>>
>>
>> Hi!
>> When using drm-legacy-kmod with drm-legacy-kmod you might need to
>> install xf86-video-ati-legacy instead of xf86-video-ati, because of
>> changes in how the kernel drivers work between versions.
>> Regards
> 
> I'll try xf86-video-ati-legacy later today.  This suggests that
> drm-legacy-kmod is not a direct move/replacement of the in-tree
> drm2 into the ports infrastructure as I've always used
> xf86-video-ati.
> 

xf86-video-ati was recently updated, together with xf86-video-amdgpu, to 
provide better support for more modern graphics cards utilizing the new 
drm-kmod drivers.  Unfortunately there were some regressions when using 
the old base driver or drm-legacy-kmod, which prompted us to create 
xf86-video-ati-legacy which is at the version xf86-video-ati was before 
the update.  There's more information about this issue here:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231884

Regards
-- 
Niclas Zeising



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