The problem is this code snippet in hcid/main.c:configure_device()
/* Set scan mode */
if (!read_device_mode(&di.bdaddr, mode, sizeof(mode))) {
if (!strcmp(mode, MODE_OFF))
device_opts->scan = SCAN_DISABLED;
else if (!strcmp(mode, MODE_CONNECTABLE))
device_opts->scan = SCAN_PAGE;
else if (!strcmp(mode, MODE_DISCOVERABLE)) {
/* Set discoverable only if timeout is 0 */
if (!get_discoverable_timeout(hdev))
device_opts->scan = SCAN_PAGE |
SCAN_INQUIRY;
else
device_opts->scan = SCAN_PAGE;
}
}
When the configuration is read from the files in /var (what useful purpose
does this serve?) instead of /etc/bluetooth/hcid.conf, SCAN_INQUIRY is
only set if the 'discovto' parameter is available and set to 0. (discovto
can be set in hcid.conf's device section)
if you remove /var/lib/bluetooth/<local_bdaddr>/*, then the scan mode are
set correctly the next time you start hcid, but after that, it breaks
again unless discovto is available.
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