https://bugs.freedesktop.org/show_bug.cgi?id=33011
--- Comment #6 from Alex Deucher agd5f@yahoo.com 2011-01-23 22:03:18 PST --- (In reply to comment #5)
xrandr shows LVDS as being off and HDMI as being on. Manually fussing with xrandr doesn't change anything, but I can turn the LVDS display on and off. However, if I try to turn all three displays on at a time, X segfaults (or at least the last time I tried it did).
Can you attach the output of 'xrandr --verbose' before and after resume? Also, if you get a segfault, can you get a backtrace and attach it here?