Sign up ×  I have a computer running an intel CPU (with hd
graphics) and a nvidia geforce display card.  Since I just need
the GPU for CUDA/OpenCL computation, I want to config the
computer to use intel hd graphics instead to save video memory.
Therefore, I try to switch back the primary display adapter from
nvidia to intel hd graphics in BIOS.  However, if I switch to
use intel hd graphics in my BIOS, /dev/nvidia0, /dev/nvidiactl
and even some command like nvidia-smi will be disappear. When I
run  $ lsmod | grep nvidia nvidia               9430169  0  I
can see nvidia module is loaded.  If I switch back the use
nvidia in BIOS, /dev/nvidia0, /dev/nvidiactl and nvidia-smi
command appear again.  How can I solve it?  I am running  $
uname -a Linux xxxxx 3.8.0-32-generic #47~precise1-Ubuntu SMP
Wed Oct 2 16:19:35 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ cat
/etc/lsb-release   nvidia driver 319.37 from ubuntu package
directly (here)  share|improve this question  Your Answer
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