Thanks Lauri Siltala for the additional information.
To Erno Kuusela,
I've reproduced the issue on one of the same hardware but with stable Saucy, it was tested with development release.
And both with and without composite on got the same troubles.
Verifying by using xfce4:
killall xfwm4 && xfwm4 --compositor=off &
then suspend and resume, you will see the same result.
Thanks Lauri Siltala for the additional information.
To Erno Kuusela,
I've reproduced the issue on one of the same hardware but with stable Saucy, it was tested with development release.
And both with and without composite on got the same troubles.
Verifying by using xfce4:
killall xfwm4 && xfwm4 --compositor=off &
then suspend and resume, you will see the same result.