Xorg segfault while entering tabletmode

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https://bbs.archlinux.org – Hi forum!Sorry if this is the wrong spot, I'm posting here because the issue occurs on the most recent kernel, but not the LTS so I'm wondering if its a kernel issue...I have a Lenovo ThinkPad X201t tablet computer, and its been running ArchLinux fine for 6 months now.  However, within the last month I've noticed a problem where when I flip the screen around for tablet mode, Xorg crashes and drops me out in a terminal.  This is the Xorg.0.log file.http://sprunge.us/aLgJI've never noticed the video/tabletmode ACPI event before, so I'm wondering if that is a ne (HowTos)