Ubuntu
xserver-xorg-video-ati package

  1. Bug #1313459
  2. Comment #6

Comment 6 for bug 1313459

Revision history for this message
madbiologist (me-again) wrote :

Full dynamic power management for AMD Radeon graphics hardware was added in Ubuntu 14.04 "Trusty Tahr"'s 3.13-based kernel. It was disabled in the upstream 3.14 kernel for AMD "Cayman", "Barts", "Turks" and "Caicos" hardware due to stability issues and re-enabled in the upstream 3.17 kernel after several fixes and improvements were made.

Ubuntu 15.04 "Vivid Vervet" is based on the upstream 3.19 kernel. Can you please test on Vivid and let us know if you are still having this issue?