Another user with the same distro (Gentoo) and HD7700 (radeonsi) told me he doesn't have this problem: http://phoronix.com/forums/showthread.php?85135-GLAMOR-ized-Radeon-Driver-Shows-Hope-Over-EXA&p=361630#post361630 http://phoronix.com/forums/showthread.php?85135-GLAMOR-ized-Radeon-Driver-Shows-Hope-Over-EXA&p=361970#post361970 oibaf pointed me to some glamor patches: http://lists.freedesktop.org/archives/glamor/2013-October/date.html I can't try them right now (I'm in Spain) but I will in a week or two.