desktop-packages team mailing list archive

[Anand <acpadhi@xxxxxxxxx>]

Alan Lord : The trouble with using metacity is has window previews. I
also do not like its Alt Tab behaviour of highlighting window borders of
the current window in alt tab list.

That is the only reason why I am sticking with compiz.
I don't think is anything else out there which has Window Previews in Alt Tab. Please let me know if you know otherwise.

In my case, I face weird problems with Classic/Flashback which are :

When there are lot of windows open, after reaching around 10 to 15
windows, the mouse movement becomes quite sluggish. It actually becomes
so bad that I feel like going back to 11.04

A quiting of docky and then compiz --replace works for some minutes and
mouse movement is ok, but then after a few minutes it happens again. I
have checked both TOP and memory and nothing seems to be a bottleneck.

Sometimes when the mouse movement sluggishness is on extreme side, doing
a compiz --replace just blanks the screen forcing to use the reset key
on the computer because, with the Nvidia Drivers, those CTRL F1 to CTRL
F6 windows do not work.

On a side note can someone guide how to get those shortcuts to terminals
working with the nvidia driver ?


If it was not the Alt Tab window previews, then I would have abandoned Ubuntu/Gnome Desktop completely and gone to XFCE.

-- 
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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