I see this too. I don't think cryptsetup is related. If I boot up without usplash, run /sbin/usplash manually, then switch to another text virtual console, it is completely black. From that point on, all the text VCs are black until I reboot.
-- [edgy] black screen after turning off usplash https://launchpad.net/bugs/55157 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
