@Coeur, on a session where you can reproduce the problem give the following command and post here the output: $ args --null --max-args=1 < /proc/$(pidof compiz)/environ
Also it would be useful the content of ~/.cache/upstart/unity7.log also.
@Coeur, on a session where you can reproduce the problem give the following command and post here the output:
$ args --null --max-args=1 < /proc/$(pidof compiz)/environ
Also it would be useful the content of ~/.cache/ upstart/ unity7. log also.