dmesg tail reveals that the Wouxun programmiing cable is using /dev/tty/USB0 which is owned by root and group uucp.

 ls /dev/ttyUSB0 -l
crw-rw---- 1 root uucp 188, 0 Aug 19 14:09 /dev/ttyUSB0

[djringjr@laptop ~]$ groups
sys adm wheel uucp audio users

Daily Build -
chirpw --version
CHIRP daily-20160802 on Linux laptop 4.7.0-1-ARCH #1 SMP PREEMPT Mon Aug 8 22:24:23 CEST 2016 i686 (Python 2.7.12)

Here's what happens.

[djringjr@laptop ~]$ chirpw

(process:2492): Gtk-WARNING **: Locale not supported by C library.
    Using the fallback 'C' locale.
ERROR: -- Exception: --
ERROR: Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/chirp/ui/clone.py", line 249, in run
    self.__radio.sync_in()
  File "/usr/lib/python2.7/site-packages/chirp/drivers/kguv8d.py", line 375, in sync_in
    self._mmap = self._download()
  File "/usr/lib/python2.7/site-packages/chirp/drivers/kguv8d.py", line 391, in _download
    self._identify()
  File "/usr/lib/python2.7/site-packages/chirp/drivers/kguv8d.py", line 353, in _identify
    _chksum_err, _resp = self._read_record()
  File "/usr/lib/python2.7/site-packages/chirp/drivers/kguv8d.py", line 315, in _read_record
    raise errors.RadioError('Radio did not respond')
RadioError: Radio did not respond

ERROR: ----------------
ERROR: Clone failed: Radio did not respond
ERROR: --- Exception Dialog: Radio did not respond ---
ERROR: None

ERROR: ----------------------------

I tried the same cable and radio on Windows 10 using the CHIRP latest  daily build

Same error - could not communicate with radio.

Using the Wouxun software with correct driver on Win10, same error.

Any suggestions?

David N1EA