Re: amdgpu on Ryzen 4700 w. Vega10 Renoir Graphics

On 2020-07-15 14:25, Michael Schuster wrote:
> Hi all,
> 
> I got a new HP laptop (455 G7) and put latest GhostBSD (20.04, based on
> 12.1 release) on it. During installation, the only graphics selection that
> didn't fail was 'scfb', which I'm still using.
> 
> AFAICT from my research, Renoir is supported by latest drm driver/module,
> so I installed that (
> https://github.com/FreeBSDDesktop/kms-drm/tree/drm-v5.0-fbsd12.1).

That branch isn't used, and may be broken.
If you want to get anything more recent than drm-fbds12.0-kmod, which 
tracks Linux 4.16, you have to upgrade to current and use drm-devel-kmod 
(which currently is at 5.3).

> 
> 
> "pciconf -lv" shows:
> vgapci0@pci0:5:0:0:     class=0x030000 card=0x8730103c chip=0x16361002
> rev=0xc2 hdr=0x00
>      vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
>      device     = 'Renoir'
>      class      = display
>      subclass   = VGA
> 
> I did quite a bit of research (or so I claim ;-)), with mixed results, but
> not success, I'm afraid. I have "kld_list ... amdgpu.ko" in my
> /etc/rc.conf, I've moved the position in the line around other items
> (linux*, cuse), w/o change
> 
> some of the attempts I made:
> 1) remove all xorg.conf files (recommended in several posts)
> amdgpu isn't loaded, Xorg immediately falls back on scfb (I can post log if
> required)
> 2) use this xorg.conf:
> Section "Device"
>          Identifier "Card0"
>          Driver     "amdgpu"
>          BusID      "PCI:5:0:0
> EndSection
> 
> ... produces this in the log:
> 
> [     8.577] (II) AMDGPU: Driver for AMD Radeon:
> All GPUs supported by the amdgpu kernel driver
> [     8.577] (--) Using syscons driver with X support (version 2.0)
> [     8.577] (++) using VT number 9
> 
> [     8.589] (II) AMDGPU(0): [KMS] drm report modesetting isn't supported.
> [     8.589] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card
> support
> [     8.589] (EE) Screen 0 deleted because of no matching config section.
> [     8.589] (II) UnloadModule: "amdgpu"
> 
> ... and the screen stays in text mode.


This looks very much like the kernel driver hasn't loaded properly, or 
hasn't attached to the hardware.  You try to force X to use amdgpu, and 
it fails because that kernel driver isn't loaded properly.

> 
> 3) I tried removing all the config files in
> /usr/local/{share|etc}/X11/xorg.conf.d, same result as in 2).
> 

Don't remove the files in .usr/local/share/X11/xorg.conf.d, they are 
part of the packaged distribution.

> I'd appreciate some advice/pointers as to what I could do to get this card
> working ... then I'll follow up about the touchpad :-)

The touchpad could be an iic touchpad, try with iichid from ports.

Regards
-- 
Niclas
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