I had the same issue. The upgrade that broke Beryl was libxrandr2 1.2.0-3. I made a copy of libXrandr.so.2.0.0 from libxrandr2 in edgy, and ran beryl with LD_PRELOAD set to that old copy; now it works. See also <http://bugs.beryl-project.org/ticket/1491>.
I had the same issue. The upgrade that broke Beryl was libxrandr2 1.2.0-3. I made a copy of libXrandr.so.2.0.0 from libxrandr2 in edgy, and ran beryl with LD_PRELOAD set to that old copy; now it works. See also <http:// bugs.beryl- project. org/ticket/ 1491>.