[Bug 252241] MacBook Pro 8,3 17" black screen after suspend/resume

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252241

--- Comment #6 from Graham Perrin <grahamperrin@gmail.com> ---
> If I manually load amdgpu and then i915kms (using Konsole in Plasma), 
> the OS remains visibly usable. 

I should add: that was with drm-61-kmod-6.1.128.1500034_2.

Historic
<https://wiki.freebsd.org/action/recall/Graphics?action=recall&rev=120#Intel_Integrated_Graphics_.28aka_HD_Graphics.29>
includes a hint that was not taken to the FreeBSD Handbook: 

> … i915kms … a flash of the console when the display driver is switched. …

I see no flash, from which I assume that whilst the module does load, it is not
effective. 

<https://pastebin.com/search?q=tags%3A%28bugzilla-252241%29&sort=-date> in the
session at 12:34 today, in Konsole I loaded i915kms (without preloading
amdgpu). Plasma remained usable until I remotely restarted SDDM. Result: a
black screen.

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