On 12/06/2019 00:58, Marc Espie wrote:
> I think this is generic enough to belong on misc@
> ----- Forwarded message from Mark Kettenis <mark.kettenis@xs4all.nl> -----
>
> Date: Tue, 11 Jun 2019 19:54:04 +0200 (CEST)
> From: Mark Kettenis <mark.kettenis@xs4all.nl>
> To: tech@openbsd.org
> Subject: Check your machdep.allowaperture setting
>
> These days most OpenBSD users should have the machdep.allowaperture
> sysctl set to 0 (the default). Having it set to seomething else poses
> security risks and can actually cause problems, in particular on
> systems that have multiple GPUs where one of tha GPUs is supported by
> inteldrm(4) or radeondrm(4) and the other isn't.
>
> You'll only need to set machdep.allowaperture to a non-zero value if
> inteldrm(4) or radeordrm(4) doesn't attach on your machine and you
> can't use efifb(4) either.
>
> ----- End forwarded message -----
>
Well if you need brightness settings on current intel gpus via
intel_backlight, it has to be set at 3 with no way around it. For
laptops you're in trouble I guess!
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