I just tried the 9.04 alpha5 live environment, with my HD 8450 card. I still get the white screen of death, but now I can switch virtual terminals, so at least I can now access a shell.
Thanks to that new-found ability, I was able to access various files of interest. I'm attaching them to this report. ** Attachment added: "bootstrap.log" http://launchpadlibrarian.net/23171824/bootstrap.log -- [RV770 HD 4850] ATI Radeon HD 4850 not supported - white screen and system freeze https://bugs.launchpad.net/bugs/325394 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs