Nothing I've tried seems to resolve the issue.
I've now installed gnome-session-flashback and run the Metacity variant
which is working fine.
When running Unity compiz eats > 100% cpu most of the time... Drag a
window and it shoots up. Moving windows around the screen is unusable.
# sudo lshw -C video
*-display
description: VGA compatible controller
product: Core Processor Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 12
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:41 memory:fc000000-fc3fffff memory:e0000000-efffffff
ioport:1800(size=8)
All was fine on my laptop until some update around the beginning of
September...
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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:
Triaged
Status in “compiz” package in Ubuntu:
Triaged
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
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