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<b><a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - gdm couldn't start with Vega RX 56 video card"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103678#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - gdm couldn't start with Vega RX 56 video card"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103678">bug 103678</a>
from <span class="vcard"><a class="email" href="mailto:deathsimple@vodafone.de" title="Christian König <deathsimple@vodafone.de>"> <span class="fn">Christian König</span></a>
</span></b>
<pre>(In reply to mikhail.v.gavrilov from <a href="show_bug.cgi?id=103678#c13">comment #13</a>)
<span class="quote">> a. Intel Graphics Processor -> Enabled
> b. Initial display output -> PCIe 2 slot
> c. A monitor connected to Radeon
> BIOS screenshot: <a href="https://bugs.freedesktop.org/attachment.cgi?id=135427">https://bugs.freedesktop.org/attachment.cgi?id=135427</a>
> 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: <a href="https://youtu.be/jjGO650EE80">https://youtu.be/jjGO650EE80</a>
> I think this is bug because even if video card unsupported it must works in
> VESA mode. This behaviour worked in Windows.</span >
Interesting, that indeed that should work. Could be a bug in the VESA BIOS or
the driver touching the hardware even if it decided not to do so.
Please try booting with modprobe.blacklist=amdgpu on the kernel commandline.
<span class="quote">> $ 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</span >
Not the slightest idea when Vega10 support was added to Mesa, but 17.2.4 is
only a few days old so that could work.
I would try to get X working with only the kernel first. If you have that
working and still no OpenGL you can still compile Mesa on your own.
Alex Kernel branch is here BTW: <a href="https://cgit.freedesktop.org/~agd5f/linux/">https://cgit.freedesktop.org/~agd5f/linux/</a>
You can also find a amd-staging-4.13 branch there, but that is a ~month old and
not maintained any more. amd-staging-drm-next is the latest development work.</pre>
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