[Bug 94811] ATI radeon driver displays nothing or a client refused to switch message on hybrid graphics

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94811

--- Comment #7 from Saurav <saurav1.net at gmail.com> ---
(In reply to Michel Dänzer from comment #6)
> 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.).

Also, with the radeon driver, the system does not select the AMD chip for HDMI
either.

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