Comment 112 for bug 96430

Ben Collins said on 2007-04-10:
The new lrm has 9631 back as the defauly nvidia-glx package set. There is now a new nvidia-glx-new package set for 9755. This was chosen because it offered the least surprise for upgrades. People who need (or want) the new 9755 driver should install nvidia-glx-new.

So missmomo0911 read more carefully before report this "not anymore a bug" again.

You have to install nvidia-glx package. Not the legacy one.
I had exactly the same problem as you have with the same nvidia MX440 graphics card and there is no problem now.

Hope it will work for you too as it has already worked for many of us.