ROSCORE command line Jade ROS on Ubuntu 15.04

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While running $ roscore I face a problem the terminal stuck

eldiwiny@eldiwiny-HP-2000-Notebook-PC:~$ roscore
... logging to /home/eldiwiny/.ros/log/4f7ba330-5b14-11e6-a139-40f02f15988e/roslaunch-eldiwiny-HP-2000-Notebook-PC-2293.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://eldiwiny-HP-2000-Notebook-PC:56423/
ros_comm version 1.11.16


SUMMARY
========

PARAMETERS
 * /rosdistro: jade
 * /rosversion: 1.11.16

NODES

auto-starting new master
process[master]: started with pid [2306]
ROS_MASTER_URI=http://eldiwiny-HP-2000-Notebook-PC:11311/

setting /run_id to 4f7ba330-5b14-11e6-a139-40f02f15988e
process[rosout-1]: started with pid [2319]
started core service [/rosout]

^C[rosout-1] killing on exit
[master] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done