Linux SQLDriverConnectW fails but SQLDriverConnect works.

Any suggestions as to why the following fails. Using the non-W calls to the
same DSN works okay from same application and versions of unixODBC 2.2.11

Unfortunately, none of the debug/comm logging of postgres gets generated
(does if a successful attach occurs).

Client encoding changed to: UCS2
Content encoding changed to: UCS2
ANSI encoding changed to: UTF-8
SQL_SUCCESS = SQLAllocHandle(HandleType = SQL_HANDLE_ENV,
InputHandle = 0x0, OutputHandlePtr = 0xa451c08)
SQL_SUCCESS = SQLSetEnvAttr(EnvironmentHandle =0xa451c08,
Attribute = SQL_ATTR_ODBC_VERSION, Value=SQL_OV_ODBC3,StringLength = 0)
SQL_SUCCESS = SQLAllocHandle(HandleType = SQL_HANDLE_DBC,
InputHandle = 0xa451c08, OutputHandlePtr = 0xa452198)
SQL_SUCCESS = SQLSetConnectAttrW(ConnectionHandle =0xa452198,
attribute = SQL_ATTR_ODBC_CURSORS, Value=SQL_CUR_USE_DRIVER,StringLength =
0)
SQL_ERROR = SQLDriverConnectW(ConnectionHandle =
0xa452198,WindowHandle = <null pointer>,InConnectionString =
DSN=PG84LOCAL;UID=test;PWD=********;;,StringLength1 =
SQL_NTS,OutConnectionString = 䔰ʉ䔰ʉ㔈੅㔈੅,BufferLength = 1024,StringLength2Ptr
= 0SQL_DRIVER_NOPROMPT)
SQL_SUCCESS = SQLGetDiagRecW(HandleType = SQL_HANDLE_DBC, Handle =
0xa452198, RecNumber = 1, SQLState = 0, NativeErrorPtr = 0, MessageText =
[unixODBC]c, BufferLength = 512, TextLengthPtr = 11)
SQL_NO_DATA_FOUND = SQLGetDiagRecW(HandleType = SQL_HANDLE_DBC, Handle =
0xa452198, RecNumber = 2, SQLState = 00000, NativeErrorPtr = 0, MessageText
= [unixODBC]c, BufferLength = 512, TextLengthPtr = 0)

SQL_DATETIME_LITERALS=119 (3.0) Not Supported
SQL_DBMS_NAME=17 (1.0) = "PostgreSQL"
SQL_DBMS_VER=18 (1.0) = "8.4.2"
......
SQL_DM_VER=171 (1.0) = "03.52.0002.0002"
SQL_DRIVER_HDESC=135 (3.0) Not Supported
SQL_DRIVER_HSTMT=5 (1.0) Not Supported
SQL_DRIVER_NAME=6 (1.0) = "psqlodbcw.so"
SQL_DRIVER_ODBC_VER=77 (2.0) = "03.51"
SQL_DRIVER_VER=7 (1.0) = "08.04.0100"