xinitrc xinitrc.d don't honore commands

I have a nvidia 8600m gt card on a dell m1530 with suse 11.0 and kde 3.5(kde4.2 doesn’t run well), reading on forums I found that this command improve performance
nvidia-settings -a InitialPixmapPlacement=2 -a GlyphCache=1
I tried to place in my xinitrc file here:

Add your own lines here…

nvidia-settings -a InitialPixmapPlacement=2 GlyphCache=1
but asking to nvidia-settings I get this:
pla@dellino:~> nvidia-settings -q InitialPixmapPlacement

Attribute ‘InitialPixmapPlacement’ (dellino:0.0): 1.
in the /etc/X11/xinit/xinitrc.d is there also an executable script with the same command

I also tried to put in /home/pla/.kde/Autostart the above script but nothing happen, I must give that command in a konsole after kde started and then it is ok

have you any idea to fix it??