[Bug 91238] 1002:9583 [iMac7,1] X fails to automatically detect ATI radeon RV600 card

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Jul 6 12:54:50 PDT 2015


--- Comment #7 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Raffaele Candeliere from comment #6)
> What I haven't tried is to configure X manually, that is, writing my own
> xorg.conf specifying the radeon driver, but it would be a gross workaround,
> not a fix. But if you need it as a test, I can try that.

Can you try that?  It would help narrow down what the problem is.  Additionally
does using the same ddx (xf86-video-ati) and xserver version from the previous
version of ubuntu work?  Can you try that similar to how you tested the older
kernel with a newer ubunutu?  Also does starting X as root work?  It could be
that the configuration with the efi stub loader sets device permissions
differently or something like that.

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