Hi,
I reproduced the Bug.
After installing new Verions off libusb, libspice, and vinagre I tried
starting with $ LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libusb-1.0.so
vinagre
That worked.
So i finally straced the library calls during startup and figured out,
that the Problem was caused by an 3rd Party libusb-1.0 which had been
installed in /usr/lib/.
However the dynamic linker prefers this over the distribution one.
Fix-1:
Comment out /usr/local/lib in /etc/ld.so.conf.d/libc.conf
Run ldconf
Fix-2:
Remove/rename this Lib
Run ldconf
Jan
