From: Richard Röjfors <richard(a)puffinpack.se&gt; According to the u-blox AT Commands Manual and my tests the response prefix of AT+UUSBCONF is "+UUSBCONF:", including a colon. The colon was missing in the code, causing next step to parse a number to fail, since a colon is not a number. --- plugins/ublox.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/plugins/ublox.c b/plugins/ublox.c index dc001765..142a5af7 100644 --- a/plugins/ublox.c +++ b/plugins/ublox.c @@ -164,7 +164,7 @@ static void query_usbconf_cb(gboolean ok, g_at_result_iter_init(&iter, result); retry: - if (!g_at_result_iter_next(&iter, "+UUSBCONF")) { + if (!g_at_result_iter_next(&iter, "+UUSBCONF:")) { ofono_error("Unable to query USB configuration"); goto error; } -- 2.19.1