It's disappointing that the Ubuntu 14.04 release has this regression and I'm assuming that a fix is not going to be included in the final 14.04 release due to lack of action on this bug report. So this brings up the following questions:
(1) What can be done to prevent new Ubuntu release regressions when running in a VMware virtual machine?? Could we (Canonical or VMware) found this problem earlier? Does Canonical do any testing of their future OS releases on VMware products before release? (2) We reported this problem on 3/17, why couldn't we get a fix for this implemented in time for the final 14.04 release? What could we have done differently to get this resolved in a more timely way? Hypothetically, future Ubuntu releases could have similar problems, so we would like to know how to better coordinate fixing issues like this. (3) Assuming fix will not get into 14.04, can Canonical release an errata patch for this fix or include it in 14.04.1? Thanks, John -- 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
