Drm: mgag200. Video adapter issue with 5.4.0-rc3 ; no graphics

[Thomas Zimmermann]

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 at 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 at 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.

You could also bisect between your original working commit (v4.18?) and
the one you want to upgrade to (v5.3?). It's only a few more builds but
might be might give better results.

BTW, are you also converting Gnome from X11 to Wayland. I found that
Gnome's Wayland code is so slow on mgag200 that it's unusable. They
recently added a shadow FB [1] to improve performance, but it won't be
available before Gnome 3.36.

Best regards
Thomas

[1] https://gitlab.gnome.org/GNOME/mutter/merge_requests/877/diffs

> 
> 
> I am not sure if I did  the  bisects correctly .   After each test I did :
>  
> 
> #1  git bisect bad 827440a90146
> 
> #2  git bisect bad f5b07b04e5f0
> 
> #3  git bisect bad c0a74c732568
> 
> #4  git bisect good 818f5cb3e8fb
> 
> #5  git bisect good 6cfe7ec02e85
> 
> #6 git bisect good f71e01a78bee
> 
> #7  git bisect good 09a93ef3d60f
> 
> #8  git bisect good f1e6b336bafa
> 
> #9 git bisect good eaf20e6933dc
> 
> #10  git bisect good 63e8dcdb4f8e
> 
> #11  git bisect good 397049a03022
> 
> I’ve restarted the bisect without appending the  <commit-id> after a  the “bad|good “  ,  and so far git  is showing the same selections. 
> 
> 
> 
> 
> 
> 
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> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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