Bug#428711: xserver-xorg: xorg suddenly locks up Thinkpad

[Jonny <jonny@csc.jp>]

I have improved by applying this patch.
http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-siliconmotion.git;a=commitdiff;h=8feca790a6e92799019237ac69a4ef618cacfaae

However, dash shell sends a message called "turning off NDELAY mode".