It's my guess that you don't want -d, as that puts in strace debugging
information. As in, information useful to the developers of strace.
What might be more helpful is the -f or -ff flags. These flags tell
strace to follow all sub processes as well, not just the first script
process. For example
$ strace -f thunderbird > thunderbird_trace.txt
** Changed in: thunderbird (Ubuntu)
Status: New => Incomplete
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thunderbird get stucked few seconds after start
https://bugs.launchpad.net/bugs/571117
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