I could reproduce the downgrade issue, libgl1-mesa-dri wanted the newer libdrm-amdgpu1 but apt failed to tell that in a sensible way.. so downgrading libgl1-mesa-dri was needed in order to downgrade libdrm
anyway, closing now ** Changed in: libdrm (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829872 Title: No more desktop effects since libdrm upgrade in Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1829872/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs