mouse cursor lag

[Seb24]

WIth the last update of lightDm, the mouse cursor lag/freese each 2 second.

[Matt Fischer (mfisch)]

Seb,

Is this still happening? Can you provide some version info for lightdm and unity-greeter?

[Jan Nekvasil (jan-nekvasil)]

Yes, it's still happening on fully updated Precise; lightdm: 1.2.1-0ubuntu1, unity-greeter: 0.2.8-0ubuntu1.1 with ATI RV620 [Mobility Radeon HD 3400 Series]. This bug is a duplicate of Bug #945450 or Bug #945749. If You know which one of them should be the „main“ bug, please mark this bug as a duplicate of it.

[Sam_ (and-sam)]

I'd vote for dupe of bug 945749, it already has three dupes.
Mouse cursor lag disappears when moving the mouse around (circles) for a while.
No mouse cursor lag when using lightdm-gtk-greeter.

lightdm:
  Installed: 1.2.1-0ubuntu1
  Candidate: 1.2.1-0ubuntu1
  Version table:
 *** 1.2.1-0ubuntu1 0

unity-greeter:
  Installed: 0.2.8-0ubuntu1.1
  Candidate: 0.2.8-0ubuntu1.1
  Version table:
 *** 0.2.8-0ubuntu1.1 0

lightdm-gtk-greeter:
  Installed: 1.1.5-0ubuntu1
  Candidate: 1.1.5-0ubuntu1
  Version table:
 *** 1.1.5-0ubuntu1 0

[Matt Fischer (mfisch)]

Agreed.

[Jeb E. (jebeld17)]

I found the problem causing most, if not all of the mouse problems on LightDM: The Ambiance and/or Radiance themes. To fix the problem, install the Ubuntu Tweak PPA "ppa:tualatrix/ppa", install Ubuntu Tweak, and go to Ubuntu Tweak<Tweaks<Login Settings. Change the GTK theme to Adwaita. Please note that Adwaita will most likely need to be installed from the Software Center.

Hope this solved all of your problems :)