From: John Donnelly <john.p.donnelly@oracle.com>
To: Thomas Zimmermann <tzimmermann@suse.de>
Cc: dri-devel@lists.freedesktop.org, allen <allen.pais@oracle.com>
Subject: Re: Drm: mgag200. Video adapter issue with 5.4.0-rc3 ; no graphics
Date: Wed, 13 Nov 2019 13:44:32 -0600 [thread overview]
Message-ID: <3452CC40-9A21-45A8-99D1-87B313A55A04@oracle.com> (raw)
In-Reply-To: <E0E19A1E-8546-4A94-88D0-C6AA6E20280A@oracle.com>
> On Nov 13, 2019, at 11:42 AM, John Donnelly <john.p.donnelly@oracle.com> wrote:
>
> Hi Thomas: See below
>
>> On Nov 13, 2019, at 2:17 AM, Thomas Zimmermann <tzimmermann@suse.de> wrote:
>>
>> Hi John
>>
>> Am 12.11.19 um 20:13 schrieb John Donnelly:
>>>
>>> In short . I started with :
>>>
>>> git bisect start
>>>
>>> git bisect bad be8454afc50f
>>>
>>> git bisect good fec88ab0af97
>>>
>>> And at the the end of bisects showed this was the offending commit :
>>>
>>> c0a74c732568
>>>
>>> commit c0a74c732568ad347f7b3de281922808dab30504 (refs/bisect/bad)
>>> Author: Jani Nikula <jani.nikula@intel.com>
>>> Date: Fri May 24 20:35:22 2019 +0300
>>>
>>> drm/i915: Update DRIVER_DATE to 20190524
>>>
>>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>>>
>>> That does not have any real relevance
>>
>> No, that doesn't look right. The other bad commits you list below also
>> don't seem to be related.
>
>
>
> Thank you for your patience ; I started over and the bisect took to me to this change that certainly reflects the behavior I am seeing :
>
> commit 81da87f63a1edebcf8cbb811d387e353d9f89c7a (refs/bisect/bad)
> Author: Thomas Zimmermann <tzimmermann@suse.de>
> Date: Tue May 21 13:08:29 2019 +0200
>
> drm: Replace drm_gem_vram_push_to_system() with kunmap + unpin
>
> The push-to-system function forces a buffer out of video RAM. This decision
> should rather be made by the memory manager. By replacing the function with
> calls to the kunmap and unpin functions, the buffer's memory becomes available,
> but the buffer remains in VRAM until it's evicted by a pin operation.
>
> This patch replaces the remaining instances of drm_gem_vram_push_to_system()
> in ast and mgag200, and removes the function from DRM.
>
>
> My 1st impression is we need a method that restores the previous behavior that pushes the content to the device .
It appears many of the code changes that were involved in 81da87f63a1 ( above ) have been superseded by :
commit 5d17718997367c435dbe5341a8e270d9b19478d3
Author: Thomas Zimmermann <tzimmermann@suse.de>
Date: Thu Jun 27 10:09:09 2019 +0200
drm/mgag200: Replace struct mga_framebuffer with GEM framebuffer helpers
Are there any other methods (tools ) you could recommend outside of starting Gnome that I could use to get a display activity shown on the console ?
===. snipped ===
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next prev parent reply other threads:[~2019-11-13 19:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 2:29 Drm: mgag200. Video adapter issue with 5.4.0-rc3 ; no graphics John Donnelly
2019-11-07 7:54 ` Thomas Zimmermann
2019-11-07 13:12 ` John Donnelly
2019-11-07 13:42 ` Thomas Zimmermann
2019-11-07 16:13 ` John Donnelly
2019-11-07 22:14 ` John Donnelly
2019-11-08 7:46 ` Thomas Zimmermann
[not found] ` <81D853E0-34F0-4894-B692-7E560AC2D9A1@oracle.com>
2019-11-08 15:06 ` Thomas Zimmermann
2019-11-08 18:07 ` John Donnelly
2019-11-08 19:10 ` Daniel Vetter
2019-11-11 15:57 ` Thomas Zimmermann
2019-11-11 17:40 ` John Donnelly
2019-11-12 10:02 ` Thomas Zimmermann
2019-11-12 19:13 ` John Donnelly
2019-11-12 20:14 ` Daniel Vetter
2019-11-13 8:17 ` Thomas Zimmermann
2019-11-13 17:42 ` John Donnelly
2019-11-13 19:44 ` John Donnelly [this message]
2019-11-13 20:06 ` Daniel Vetter
2019-11-13 21:34 ` John Donnelly
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