Fedora 16 Thinkpad X40 resume from hibernation issue

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http://forums.fedoraforum.org – On rare occasion, opening the lid on my X40 to resume from hibernation results in a blank, but back-lit screen. I had the same problem more frequently when I was running Slackware 13. I can still SSH into the X40 and shut it down from there. I run XFCE. I tried killing xscreensaver, xfce4-session, xfce4-power-manager, but nothing happened. After rebooting, the Automatic Bug Reporting Tool throws a kernel warning: [111848.029232] WARNING: at drivers/gpu/drm/i915/intel_display.c:915 assert_panel_unlocked+0xd1/0xe0 [i915]() Any ideas? (HowTos)