I can confirm this behaviour on an AMD64 nx6325 Notebook on Ubuntu 8.04,
with the same ATI Radeon Xpress 1200, running xorg-driver-fglrx
1:7.1.0-8-3+2.6.24.13-19.45 from the repos. Blender 2.45 (repos), 2.46
and 2.47RC1 all crash when I try to add a mesh to the scene.
/var/log/messages:
Aug 12
I tested switching back to the radeon drivers. Both Blender 2.45 and
2.46 worked fine this way. So it is a problem with the fglrx
proprietary drivers. On 7.10 they used to work together.
213197 is probably a duplicate of this.
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Blender crashes with Segmentation fault