You seem to be using a very old version of Ubuntu and in particular the Linux kernel. Can you try newer versions? Current versions of the kernel radeon driver support DPM.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/881526 Title: AMD graphics hardware hangs with an homogeneous coloured screen or blank screen, and with chirp coming from the graphics card To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/881526/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs