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[Alan Lord <alanslists@xxxxxxxxx>]

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...

-- 
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.

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