On Fri, Apr 5, 2013 at 5:11 PM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > Every day or so, I'll click something and my screens go blank for a > second or two. dmesg complains about a lockup, and afterwards > everything is painfully slow. (Even switching focus to other emacs > windows takes a second or two.) Once this happens, if I restart X, I > get a blank screen, although the mouse still works and I can switch > VTs and use the console. Try disabling hyperZ. Set env var R600_HYPERZ=0 (mesa 9.1) or R600_DEBUG=nohyperz (mesa git). Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel