[Bug 103678] gdm couldn't start with Vega RX 56 video card

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changed bug 103678
What Removed Added
Resolution --- FIXED
Status REOPENED RESOLVED

Comment # 8 on bug 103678 from
(In reply to mikhail.v.gavrilov from comment #5)
> > Alternatively you can also upgrade the driver.
> how to do it? I have already switched to mainline kernel

Mainline kernel only has experimental support for compute on Vega10, no support
for displaying anything.

You need to use Alex amd-staging-drm-next kernel or wait for 4.15.

> And also I see here yet another problem.
> If I enter BIOS and switch off Intel GPU then gdm successfully works but
> without hardware acceleration. I think this is correct behavior even if
> internal graphics still enabled. Can you look into this issue?

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.

To use a Vega10 in a desktop machine you need development packages of the
kernel, mesa and DDX.

Pre compiled user space packages for Ubuntu can be found here for example:
https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/mesa


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