Yeah, there is no way to just drop /usr/bin/compiz from 12.04 onto a 14.04 install. It simply will not work due to plugin mismatches, etc.
One way to see if 3d is enabled is to run /usr/lib/nux/unity_support_test -p and see the output. If it says "Not software rendered: no" then the effects are turned off. I did an experiment by setting nomodeset=1 in the kernel command line for both 12.04 and 14.04. This enabled llvmpipe on the machine and in 12.04, the nice Unity2d was running, but as Marco said that was deprecated since 12.10. On 14.04, it's the software rendered Compiz+Unity3d which pales in comparison to Unity2d. This is because all of the OpenGL rendering is done in the CPU which is not very efficient at these tasks. When I ran this on 14.04 (bare metal mind you), I'm guessing the frame rate is ~20 fps w/ very high CPU usage when dragging a window around. Even scrolling up and down in Firefox produces lower frame rates and high CPU usage. There really isn't anything we can do in Compiz and Unity3d to help this anymore than what we already do as Marco suggested. What would help is a VMWare kernel module that virtualizes the GPU in Linux. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1293384 Title: Compiz CPU usage dramatically increased in Ubuntu 14.04 Status in Compiz: New Status in “compiz” package in Ubuntu: Confirmed Bug description: It appears that the workload of low-level graphical operations used by compiz when, for example, moving windows has increased dramatically between Ubuntu 12.04 and Ubuntu 14.04. This might not be that visible when using high-end gpus, but should be clearly visible when using compiz on llvmpipe and to some-extent invalidates the approach of using compiz on top of llvmpipe as a fallback when no GPU is available: How to reproduce: 1) Use the unity-3d desktop in Ubuntu 14.04 on top of a non-accelerating Xorg driver like "modesetting". Move windows around. Note peak and average cpu-usage. How to verify compiz is the culprit: 1) copy /usr/bin/compiz from a Ubuntu 12.04 installation. Drop it in as /usr/bin/compiz on 14.04. Reboot. Perform the same window movement. CPU-usage should be substantially lower. This problem also affects VMs running on VMware ESX with a software- rendering GPU. Window movement becomes sluggish, which suggests that even with GPUs, compiz has increased the number of operations required to move windows. To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1293384/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
