Comment # 13
on bug 103678
from mikhail.v.gavrilov@gmail.com
> You need to use Alex amd-staging-drm-next kernel or wait for 4.15. Where I can find such kernel or patch set for 4.13 or 4.14 kernel? > That's because in this configuration the BIOS brings up your Vega10 for output and X just sticks with the Vesa driver because it can't find anything else. This is not explain why X can't finds Vega10 when iGPU is on, but BIOS initialize Vega10 GPU. I think you misunderstood me. 1) a. Intel Graphics Processor -> Enabled b. The initial display output -> IGGX c. A monitor is connected to the motherboard BIOS screenshot: https://bugs.freedesktop.org/attachment.cgi?id=135426 In this case only the Intel graphic works. System works as well as without Radeon video card. The Radeon turbine rotates at full speed all the time. 2) a. Intel Graphics Processor -> Enabled b. Initial display output -> PCIe 2 slot c. A monitor connected to Radeon BIOS screenshot: https://bugs.freedesktop.org/attachment.cgi?id=135427 In this case all BIOS output, boot messages and the console passes through the Radeon graphics card. But graphics subsusystem couldn't launched. The Radeon turbine works silent. Demonstration: https://youtu.be/jjGO650EE80 I think this is bug because even if video card unsupported it must works in VESA mode. This behaviour worked in Windows. 3) a. Intel Graphics Processor -> Disabled b. Initial display output -> PCIe 2 slot c. A monitor connected to Radeon BIOS screenshot: https://bugs.freedesktop.org/attachment.cgi?id=135428 In this case all BIOS output, boot messages and the console passes through the Radeon graphics card. Graphics subsusystem launched and works without hardware acceleration in graphic mode with resolution 1024x768. The Radeon turbine works silent. This behaviour also expected in case 2 > Pre compiled user space packages for Ubuntu can be found here for example: https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/mesa $ glxinfo | grep -i "OpenGL version" OpenGL version string: 3.0 Mesa 17.2.4 Which minimal version is needed? I see on Fedora 27 I have Mesa 17.2.4
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