Thank you for qick reply for this issue
I will install ubuntu 14.04 on this machine again to check it.
thank you for taking time to review this issue
and , here is another related report for this issue https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1251213
Thank you for qick reply for this issue /bugs.launchpad .net/ubuntu/ +source/ unity/+ bug/1251213
I will install ubuntu 14.04 on this machine again to check it.
thank you for taking time to review this issue
and , here is another related report for this issue
https:/