https://bugs.freedesktop.org/show_bug.cgi?id=100289
OmegaPhil@startmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |OmegaPhil@startmail.com
--- Comment #2 from OmegaPhil@startmail.com --- I have just built and installed from the debian-unstable branch off git (https://anonscm.debian.org/cgit/pkg-xorg/driver/xserver-xorg-video-ati.git/) which is directly tracking upstream - confirmed 7.9 is loaded, the problem is still present.
Hmm, so XFCE4 Display could be responsible for blacking out the other monitors momentarily too?