Comment 12 for bug 1278012

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Uveges Valentin (iuv-vali) wrote :

A workaround for ubuntu 14.04 with nvidia driver is to disable backing store in xorg:

Make sure you have the "-bs" option in lightdm config file:
cat /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf
[SeatDefaults]
# Dump core
xserver-command=X -bs -core