https://bugs.freedesktop.org/show_bug.cgi?id=76130
--- Comment #12 from Jim freedesktop.jim-j@mamber.net --- I just realized that another performance issue I had is actually caused by this bug. This occurs with kernel 3.10.0-229.1.2.el7.centos.plus (and probably all kernels). After I suspend/resume scrolling in gnome-terminal is very slow. For example if I 'cat /var/log/messages' then scrolling in gnome-terminal is very jerky. Likewise scrolling from within vi or less (/var/log/messages is a good way to test) is also painfully slow. Booting with "radeon.dpm=0" also solves this gnome-terminal scroll problem for me.