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AMD/Intel hybrid graphics

Graphics issues like: bad framerates, weird colors, OpenGL errors etc. Bad graphics ar usually the result of bad graphics cards or drivers.
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In order to help you, we need to know a lot of information. Make sure to include answers to at least the following questions in your initial post.

- what OS (Windows Xp/Vista, Mac etc.) are you running?
- what FlightGear version do you use?
- what graphics card do you have?
- does the problem occur with any aircraft, at any airport?
- is there any output printed to the console (black window)?
- copy&paste your commandline (tick the "Show commandline box on the last page of FGRun or the "Others" section on the Mac launcher).
- please upload a screenshot of the problem.

If you experience FlightGear crashes, please report a bug using the issue tracker (can be also used for feature requests).
To run FlightGear on old computers with bad OpenGL support, please take a look at this wiki article. If you are seeing corrupted/broken textures, please see this article.

Note: If you did not get a reponse, even after 7 days, you may want to check out the FlightGear mailing lists to ask your question there.

Re: AMD/Intel hybrid graphics

Postby hibert » Sat Apr 24, 2021 1:15 pm

thanks again for your great help

I found something in the dmesg log right after the crash of FG

Code: Select all
kernel: [drm] PCIE gen 3 link speeds already enabled
kernel: amdgpu 0000:01:00.0: amdgpu: PCIE GART of 256M enabled (table at 0x000000F400000000).
kernel: i915 0000:00:02.0: cannot be used for peer-to-peer DMA as the client and provider (0000:01:00.0) do not share an upstream bridge or whitelisted host bridge
kernel: amdgpu 0000:01:00.0: amdgpu: GPU fault detected: 146 0x0006200c
kernel: amdgpu 0000:01:00.0: amdgpu:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00000000
kernel: amdgpu 0000:01:00.0: amdgpu:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0602000C
kernel: amdgpu 0000:01:00.0: amdgpu: VM fault (0x0c, vmid 3) at page 0, read from '' (0x00000000) (32)
kernel: i915 0000:00:02.0: cannot be used for peer-to-peer DMA as the client and provider (0000:01:00.0) do not share an upstream bridge or whitelisted host bridge
kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled seq=77, emitted seq=78
kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process fgfs pid 901 thread fgfs:cs0 pid 907
kernel: amdgpu 0000:01:00.0: amdgpu: GPU recovery disabled.


Hooray wrote in Fri Apr 23, 2021 7:46 pm:To see if it's OSG specific, try any of the OSG examples/demos (or osgviewer/fgviewer standalone).
However, first of all, ensure that other OpenGL software works properly.

There's also dedicated OpenGL benchmarks that you could try, i.e. other than just running glxgears :lol:


good idea. chose gfxbench because I've already used it and it is quickly installed for me via AUR. starting a openGL benchmark works on the intel side. using DRI_PRIME=1 ends in a freeze similar to FG.
so a driver problem after all? openGL is working with my intel card ? i am confused what to do next.
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Re: AMD/Intel hybrid graphics

Postby Hooray » Sat Apr 24, 2021 1:53 pm

Yes, make sure to fix up your GPU issues first - you should revisit FlightGear only after doing so, and preferably also after running various benchmarks first.
Otherwise, tinkering with FlightGear is pointless, because it simply needs a GPU
Please don't send support requests by PM, instead post your questions on the forum so that all users can contribute and benefit
Thanks & all the best,
Hooray
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Re: AMD/Intel hybrid graphics

Postby V12 » Sat Apr 24, 2021 2:35 pm

hibert :
When my FirePro died, I seen similar failures.
Fly high, fly fast - fly Concorde !
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