Demo segfaults.

[Matthes]

Ubuntu supported my gpu out of the box. Following packages might be related to drivers:
fglrx-modaliases 2:8.723.1-0ubuntu4
linux-firmware 1.34.1
linux-firmware-nonfree 1.8
x11-utils 7.5+3
xserver-xorg 1:7.5+5ubuntu1
xserver-xorg-video-ati 1:6.13.0-1ubuntu5
(there are a lot more x-server-xorg[...] packages I have installed, I didn't listed them all here)

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Also post the contents of hpl.log. Should be in Amnesia/MainDemo folder somewhere among your user data files.

The file is in the output-zip I attached to the first post of this thread.