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Hi,
In the french documentation on obsd4a's wiki, I wrote:
"When to add this option?
When you see into xorg.log:
$ head /var/log/Xorg.0.log
[ 33.839] (WW) checkDevMem: failed to open /dev/xf86 and /dev/mem
(Operation not permitted)
Check that you have set 'machdep.allowaperture=1'
in /etc/sysctl.conf and reboot your machine
refer to xf86(4) for details
(...)
"
It's right?
You mention security risks and others problems.
Which?
Could you explain simply, please?
On 6/12/19 12:58 AM, Marc Espie wrote:
> I think this is generic enough to belong on misc@ ----- Forwarded
> message from Mark Kettenis <[email protected]> -----
>
> Date: Tue, 11 Jun 2019 19:54:04 +0200 (CEST) From: Mark Kettenis
> <[email protected]> To: [email protected] 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 -----
>
- --
~ " Fully Basic System Distinguish Life! " ~ " Libre as a BSD " +=<<<
- ----
<me>Stephane HUC as PengouinBSD or CIOTBSD</me>
<mail>[email protected]</mail>
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