no screens found(EE) - Cannot use AMD R5 M330 as output to monitor

[IL Ka]

Thank you, Alex.

I am not topic starter, just a curious one. This is how it works:

* AMD card renders some 3D output to some memory region (this card is
called "source" by randr)
* Intel sends it to the output  (this card is called "sink")

By setting "DRI_PRIME=1" you are asking app to use AMD to render.

Is it correct?





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On Fri, May 15, 2020 at 7:16 PM Alex Deucher <alexdeucher at gmail.com> wrote:

> Most modern desktop environments set this up already.  All you need to do
> is set the env var DRI_PRIME=1 when running an app and it will run on the
> dGPU.  Many desktop environments also provide a GUI based option to choose
> which GPU to run a particular application on.
>
> Alex
>
> On Fri, May 15, 2020 at 8:23 AM IL Ka <kazakevichilya at gmail.com> wrote:
>
>> Then what is the right thing to do here?
>> Use AMD only for rendering, but not for the output. Something like:
>> $ xrandr --setprovideroffloadsink provider sink
>> ?
>>
>>
>>
>>
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>>
>> On Thu, May 14, 2020 at 9:52 PM Alex Deucher <alexdeucher at gmail.com>
>> wrote:
>>
>>> On Thu, May 14, 2020 at 2:47 PM IL Ka <kazakevichilya at gmail.com> wrote:
>>> >
>>> > Here is what happened:
>>> >>
>>> >> [   347.043] (WW) RADEON(0): No outputs definitely connected, trying
>>> again...
>>> >> [   347.043] (WW) RADEON(0): Unable to find connected outputs -
>>> setting 1024x768 initial framebuffer
>>> >> [   347.043] (II) RADEON(0): mem size init: gart size :7fbcf000 vram
>>> size: s:80000000 visible:fbbe000
>>> >
>>> >
>>> > It seems that you have 2 video cards: intel (built into CPU I believe)
>>> and ATI.
>>> > Intel is connected, not ATI.
>>> >
>>> > I think you need to enable ATI video card in your BIOS settings.
>>> > There should be something like "discrete video card" or "on board
>>> video card" switch.
>>>
>>> Not possible on this system.  The dGPU in question has no display
>>> hardware at all so it cannot drive a display.  It can only support
>>> render offload.
>>>
>>> Alex
>>>
>>
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