I have exactly the same problem with the same configuration (Check a similar post here ). I have not found a solution yet. Some relevant information can be found here.
I have tried to run matlab from the terminal like this:
which gives me the following error:
ld.so: object '/usr/lib/i386-linux-gnu/libv4l/v4l2convert.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored
Consequently, I have not managed to solve the problem and get my camera working with matlab.
Did you finally fix it? I would appreciate if you have any info.