Re: AMDGPU(4) - Question about man page

On Wed, Oct 21, 2020 at 11:13:59AM -0500, flint pyrite wrote:
> Question: is the amdgpu(4) manual page up to correct and up to date?
>
> https://man.openbsd.org/amdgpu

The man page is for the xorg driver.

>
> I set up an xorg.conf file in /etc/X11/xorg.conf and was trying to get
> AMDgpu working.
>
> The man page uses "Device" as the section. This worked as root but not
> a normal user. When I changed "Device" to "OutputClass," X loaded
> without error as a normal user.
>
> Also, the man page does not mention setting
>
> machdep.allowaperture=1
>
> in /etc/sysctl.conf

That is to permit non-kms drivers, why are you setting this?

>
> cat /etc/X11/xorg.conf
>
> Section "OutputClass"
> Identifier "AMDgpu"
> MatchDriver "amdgpu"
> Driver "amdgpu"
> Option "DRI" "3"
> Option "TearFree" "true"
> EndSection
> #copied from /usr/X11R6/share/X11/xorg.conf.d/10-amdgpu.conf
>
>
> #Section "Device"
> # Identifier "AMDgpu"
> # Driver "amdgpu"
> # Option "DRI" "3"
> # Option "TearFree" "true"
> #EndSection
>
> Section "Files"
> FontPath "/usr/local/share/fonts/spleen/"
> FontPath "/usr/local/share/fonts/ghostscript"
> EndSection
>
> 6.8 GENERIC.MP#98 amd64
>
> As a normal user, and using "Device" X fails with "No devices
> detected. If I leave out the section completely, X goes through mode
> setting and chooses Radeon.

I suspect you have hardware claimed by radeondrm and not amdgpu.
It is hard to know without seeing a dmesg and /var/log/Xorg.0.log