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cairo-dock visual performance is poor in lubuntu. My desktop suffers with black background when I navigate my mouse pointer on Cairo dock.

What is causing this and how can I fix it?

  • You need to turn on the composite. It's handled by your Window Manager (metacity, compiz, xfwm, etc) – user143311 Mar 25 '13 at 15:58
  • Although fabounet is correct about compisiting, if your running lubuntu in the first place you are likely to be speed/memory constrained. Have you looked at AWN ? It's really light. – Scott Goodgame Mar 25 '13 at 17:22
  • there is also a Cairo Dock setting: System > Composition > "emulate composition with fake transparency" that might work, depending on your system/version. @fabounet would know better than I would though. – drammock Mar 26 '13 at 0:31
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Use a seperate lightweight compositor: xcompmgr (or use a heavyweight like compiz)

Install:

sudo apt-get install xcompmgr

Run it just once (until you logout):

xcompmgr -n

Or have it started automatically by adding it in the systemwide startup:

/etc/xdg/lxsession/Lubuntu/autostart

Or create a desktop icon for it and add this to your desktop session startup:

~/.config/autostart

(last option makes it very easy to turn it on or off via Desktop Session Settings )

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