Comment 3 for bug 264485

Information found so far:

1. If we test on images download directly from Canonical, like 8.04.1 with Gfx 19 and 8.04.1a with Gfx 19, we see this issue.

2. If we take the 8.04 PV build, then manually using dpk to upgrade the driver to Gfx 19, we see NO issue.

3. If we take the 8.04.1a build, then manually using dpkg to upgrade the driver to Gfx 20, we see NO issue.

Per tester:

The problem module is xserver-xorg-video-psb. It is supposed to overwrites /usr/lib/xorg/modules/libexa.so from xserver-xorg-core.

When perform –-force-overwrite xserver-xorg-video-psb over the other module and reboot, the problem goes away.

This sounds like a Canonical build script is ignoring the conflict and is not replacing the file as it should.