The thing is, TI doesn't provide hard float libs of powervr. I read, that n900 is the only device supporting hart float because of meego. Maybe this http://build.meego.com/package/files...-oss%3ATesting or this https://build.pub.meego.com/project/...%3AN9xx-common ? I do not have any expirience there, so I can't help. Maybe this won't work if Xorg in Ubuntu is different than Meego or the thumb compiled userspace that meego doesn't have but it would be interessting to see if you can get somwhere.