Qt5 not detect usb mouse after run app

[lamp]

hi
1- if connect mouse and run qt app, mouse work but if disconnect see this error on screen repeatedly:
Could not read from input device: No such device
Could not read from input device: No such device
Could not read from input device: No such device
.
.
.

2- if run app then connect mouse, qt not detect mouse !

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command:
./test -plugin tslib -plugin evdevmouse -plugin evdevkeyboard

[lamp]

in qt 4 set this:
"export QWS_MOUSE_PROTO="MouseMan:/dev/input/mice"
and problem solved.

how to solve this problem in Qt 5.4 ?