14.04 - Ubuntu-Tweak - NO GUI

[czgirb]

When in 12.04, each time I used Ubuntu-Tweak << Janitor, mark the available box, Clean >> will end my Ubuntu with NO GUI
So I run what said in https://wiki.ubuntu.com/Kernel/LTSEnablementStack#A12.04.5_.2B-_14.04_Hardware_Enablement_Stack_Policies_and_Proc edures and my Pangolin back to normal.
After upgrade to 14.04, yesterday I re-install Ubuntu-Tweak and give it a try. and today ... the nightmare remains !!!
Now ... what should i do ??? Please guide me ...
Thank you

PS:
I've tried to use utopic or unicorn ... but it said server not found
When in 12.04.4, I use trusty ... if now i re-use trusty, is it will makes my 14.04 to become 12.04.4 again? or what?
Please guide me ...
Thank you

[czgirb]

Help ... Help ... Help ...

[czgirb]

just tried using trusty, but ubuntu said that all component is up-to-date. so, do not need to install

[czgirb]

just tried linux-image-generic-lts-trusty, the system also said it was the newest version also