Hi Michael, I run exactly into the same issue. My compiz entry in sources.list was already commented out... and in fact, I thought I was running only official packages (I did a downgrade from the compiz ones a couple of months ago, when I run into an ugly font problem).
Running $ sudo dpkg -r --force-depends libgl1-mesa libgl1-dev libgl1-dri libglu1-mesa libglu1-mesa-dev mesa-common-dev mesa-utils $ sudo apt-get install -f solved the problem, but I lost ubuntu-desktop and x-window-system-core in the process. After that, update-manager could do its job, and now It's happy downloading all the Edgy packages. Given the fact that MANY users have been playing with GLX and compiz, I think it would be really nice if the update-manager could "learn" to deal with this problem for the final release. Otherwise, I'm afraid the mailing lists and forums will be flooded with messages regarding this issue. -- Can't calculate the upgrade with unofficial mesa/compiz packages https://launchpad.net/bugs/58424 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
