I just upgraded my Ubuntu 14.04 32 bit to 64 bit. I find right after I boot it the first time that the machine is running really slow, even slower than when I had the 32 bit version.
I find that when I run top command, the compiz process is occupying 90% of the CPU. I tried to resolve that somehow, but no success yet. I also saw a message from the system saying that 3D at this time is being done in software and X is not using hardware acceleration to achieve it.
I want to ask if someone else also faced this issue, and how could I bring my machine up to speed.
I have i7 processor with 16 GB of RAM.