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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - ATI radeon driver displays nothing or a client refused to switch message on hybrid graphics"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94811#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - ATI radeon driver displays nothing or a client refused to switch message on hybrid graphics"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94811">bug 94811</a>
from <span class="vcard"><a class="email" href="mailto:saurav1.net@gmail.com" title="Saurav <saurav1.net@gmail.com>"> <span class="fn">Saurav</span></a>
</span></b>
<pre>(In reply to Alex Deucher from <a href="show_bug.cgi?id=94811#c8">comment #8</a>)
<span class="quote">> (In reply to Saurav from <a href="show_bug.cgi?id=94811#c7">comment #7</a>)
> > (In reply to Michel Dänzer from <a href="show_bug.cgi?id=94811#c6">comment #6</a>)
> > > Looks like the AMD GPU has no physical display connections, so running X on
> > > that alone isn't possible, and I'm not sure vgaswitcheroo is useful either.
> >
> > How does fglrx work on Ubuntu 15.10, then? Booting with fglrx installed
> > (which creates the XOrg configuration file I have posted for radeon but with
> > "fglrx" instead of "radeon" for the driver) works properly and selects the
> > AMD chip. The active GPU is shown as the AMD one in both the GUI
> > (Unity/GNOME system details panel) and by the text-mode tools (glxinfo,
> > inxi, etc.).
>
> The intel driver still drives the display. fglrx just copies the rendered
> content to the intel display buffer.
>
> >
> > Also, with the radeon driver, the system does not select the AMD chip for
> > HDMI either.
>
> The AMD chip you have does not even have display hardware. You have a
> muxless system which means the dGPU is only used for offscreen rendering.
> The dGPU renders to an offscreen buffer and it's copied to the integrated
> GPU for display.</span >
OK, so is it possible to do something similar (copying to the Intel buffer)
with the radeon driver?</pre>
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