Thank you for reviewing this report , and here is another reference report related to this symptom
It has been accured also to the Ubuntu-MATE 15.04 , and it was resolved quickly by the Ubuntu-MATE team https://bugs.launchpad.net/ubuntu-mate/+bug/1437961
I hope it can be help
Thank you for reviewing this report , and here is another reference report related to this symptom /bugs.launchpad .net/ubuntu- mate/+bug/ 1437961
It has been accured also to the Ubuntu-MATE 15.04 , and it was resolved quickly by the Ubuntu-MATE team
https:/
I hope it can be help