Re: drm-kmod: AMD Ryzen Vega 8?

On 06/08/2019 01:23, Greg V wrote:
> On August 5, 2019 9:19:20 PM GMT+03:00, Grzegorz Junka <[email protected]> wrote:
>> On 05/08/2019 16:21, Greg V wrote:
>>> Though ACPI/EFI/etc related memory mapping improvements happened very
>>> very recently. I'll retest once again.
> Update: still, not disabling efifb and launching a display server causes a corrupted image and freezes the system.


Does it give any clue why it works on my desktop? I see a message about 
switching efifb to fb, is that the disabling you mean here?

Should I expect any problems when switching to drm 5 later?


>> I think the
>> amdgpu module loads but fails to initialize the graphics card since
>> after that I don't see any other drm messages. I am getting the same
>> message ([drm] amdgpu kernel modesetting enabled.) when I try to load
>> amdgpu manually from the command line after the system is fully booted
>> ("kldload amdgpu").
> No no no, if a GPU driver *fails*, it makes a lot of noise. If it only shows "enabled", it did not find any supported GPUs at all.
>
> Which would make sense if you're on the packaged 4.16 drm, as support for VegaM was added later. You need to install 5.0 from git.
>
> By the way: loading amdgpu only on that laptop would probably be pointless, you need to keep i915kms loaded and then kldload amdgpu.
>

Yes, of course, I don't load amdgpu, just i915. Otherwise the graphics 
isn't accelerated.

Do you mean that with drm 5 I will be able to use amdgpu instead of 
i915? What about switching between the two graphics cards, which I 
thought isn't supported?

Thanks
GrzegorzJ

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