hi, i followed this tut (intel-gma-x4500-garbled-graphics-under-bt4) for installing driver for intel gma x4500 driver on backtrack 4 r2.
all seems to be great, but at the last command ,, when typing startx, i get these things::
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dlopen: libdrm_intel.so.1: cannot open shared object file: No such file or directory
(EE) Failed to load /usr/lib/xorg/modules/drivers//intel_drv.so
(EE) Failed to load module "intel" (loader failed, 7)
(EE) No drivers available.

Fatal server error:
no screens found
giving up.
xinit: Connection refused (errno 111): unable to connect to X server
xinit: No such process (errno 3): Server error.
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so what is the problem??