Comment 1 for bug 193633

i did more testing. it looks like race condition. from time to time i get LeftCtrl+LeftShift+LeftArrow or LeftCtrl+LeftShift+RightArrow working, but very seldom. When it starts to work it continues to work for may be 1 minute. I do not know internals, but the whole thing behaves like there are two entities competing over the same signal somewhere in the Gtk or Gnome.

I do not know if this is a kernel related problem or a desktop (Gnome/Gtk) related problem. I have also KDE libraries installed (i use Krusader). I start to think that the problem is related to the desktop code. What really bewilders me, that USB keyboard from HP works just fine. The problem is specific to S510