Blank display after enabling laptop screen with working foreign monitor

Submitted by kal..@..il.com

Assigned to Xfce Bug Triage

Description

Hi there. I just newbiew in FreeBSD, but right when I start using it I just install XFCE wm on FreeBSD 8.2, after using for a 3 month, I install new (not upgrade) FreeBSD 9.2 and still using XFCE for about half year. Now, I install new (not upgrade) FreeBSD 10, and again XFCE - very nice windows manager and light weight witch the most important for my Dell d610 laptop (2004 year). But one big issue: I always disable laptop screen and work only in addition monitor, but sometimes needs to work in both screens. So when I enable laptop screen there were blank dark screen on laptop with mouse arrow appear, on second screen there were only picture of desctop with mouse arrow, which I can move, but there were no response from buttons, or any actions, even CTRL+ALT+BCKSP would work. To bring all back, I should unplug second VGA cabble from laptop, reboot, enter in XFCE, plug VGA cabble, then enable addition display, only that will bring all alive. Thanks for any help.

Version: 4.10.0