Comment 7 for bug 1503758

tried the patch in comment #3, #4 and #6 on 16.04 and 14.04, got below result:

1, 14.04 (kernel 3.19.0-37, u-s-d: 14.04.20151012, compiz 2014.20150313)
  1.1 without patch
    u-s-d and compiz crashed and system logout after adjust resolution by use display setting at u-c-c (unity-control-center) or use command "xrandr -s 1"
  1.2 with patch
    1.2.1, can not set the resolution by use display setting at u-c-c, the error info please refer to attachment setting-error.jpg
    1.2.2, can change resolution by command "xrandr -s 1" successfully.

2, 16.04 (kernel 4.4.0-21, u-s-d: 16.04.20160209, compiz 16.04.20160415)
  2.1 without patch
    u-s-d crashed once when change resolution by display setting or cmd, but system will not logout, user can continue change resolution without crash.
  2.2 with patch
    same result with without patch.