I had a fairly subtle glitching issue on my Samsung Ativ Book 8 running Openbox on Debian Jessie. Basically icons in Docky/Plank had a orange box outline and Tint2 icons also looked unsmooth.
In order to fix I did the following:
cd /etc/X11/xorg.conf.d/
cd /etc/X11/xorg.conf.d/
cd /etc/X11/xorg.conf.d/
sudo nano 20-intel.conf
sudo nano 20-intel.conf
sudo nano 20-intel.conf
Then put the following in the file:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
EndSection
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
EndSection
Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree" "true" EndSection