Hi Tom,
Thanks for your advice.
I tried to uninstall ORC and test again. Unfortunately, just like Damon,
more tests failed.
https://lists.gnu.org/archive/html/discuss-gnuradio/2013-08/msg00353.html
I installed GNU Radio on another computer which run 64-bit Linux several
month ago. This remind me that something strange may happen when a 32bit
OS
run on a 64bit processor. So I installed the Ubuntu 64bit and build GNU
Radio with the build-gnuradio script.
It works! All tests passed this time! ! !
Thanks!
Zhou