Bug#736580: kde-plasma-desktop: mouse cursor disappears when hovering in certain places

[solitone <solitone@mail.com>]

I wanna just post an update. In my case, it should have been an issue 
with the video card driver. My laptop has an Intel integrated video 
card, as well as a discrete NVIDIA GPU.

$ lspci -vnn | egrep 'VGA|3D'
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT 
Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA 
controller])
0a:00.0 3D controller [0302]: NVIDIA Corporation Device [10de:1292] (rev a1)

I installed a newer version of the Intel driver, updating package 
xserver-xorg-video-intel from version 2:2.19.0-6 (wheezy) to 
2:2.21.15-2~bpo70+1 (wheezy-backports), and, in my configuration, it 
seems to have solved the issue.

Cheers