I've installed 0.7.12 via rubygems (which is awesome btw), but my game windows tend to flicker and go black. I can drag the windows around my Desktop causing them to tear. I'm on Ubuntu 8.10 using Ruby 1.8.7 that I've compiled from source. It feels like I'm missing a dependency or forgot a configuration parameter when compiling Ruby. Any ideas?

Hmmm, if the window contents do show up correctly from time to time, it can't really be a missing dependency. If it flickers, then my guess would be that something in the fragile construction of X11, the window manager and the graphics drivers has probably changed again :)

Does it work better if you choose a non-compositing window manager? I always found that everything seemed more stable when I selected "No effects" under appearance in the Ubuntu control panels.

Yes, it does seem to work better with the effects turned off.  A few of the examples are still broken, however.  Thanks!

Ah…are you on AMD, Nvidia or Intel?

Also, what examples are still broken, and in what way? :)

So I was told that Intel/Compiz is still a horrible combination (why is it the default then???), and that it's being worked on. Even though it might work with the steps from this URL: http://bgoglin.livejournal.com/17395.html

Hopefully the problem will have solved itself before I have a native Intel/Ubuntu machine to debug on again *knocks on wood* Sigh :)