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I tried the following on bluex version 5.48 and 5.52.

I have set ControllerMode to "le" in main.conf.

Using bluetootctl, when i turn on the advertisement using command
"advertise on" ,

I get 0x02 advertisement flag. which means "BR/EDR Not Supported" (Bit
2) is not set.


Now , if i restart the bluetooth service, and turn on the advertisement again, 
I get 0x06 advertisement flags.


Here is my main.conf

[General]# Default adaper name
# Defaults to 'BlueZ X.YZ'
#Name = BlueZ# Default device class. Only the major and minor device class bits 
are
# considered. Defaults to '0x000000'.
Class = 0x000100# How long to stay in discoverable mode before going back to 
non-discoverable
# The value is in seconds. Default is 180, i.e. 3 minutes.
# 0 = disable timer, i.e. stay discoverable forever
DiscoverableTimeout = 0# How long to stay in pairable mode before going back to 
non-discoverable
# The value is in seconds. Default is 0.
# 0 = disable timer, i.e. stay pairable forever
#PairableTimeout = 0# Automatic connection for bonded devices driven by 
platform/user events.
# If a platform plugin uses this mechanism, automatic connections will be
# enabled during the interval defined below. Initially, this feature
# intends to be used to establish connections to ATT channels. Default is 60.
#AutoConnectTimeout = 60# Use vendor id source (assigner), vendor, product and 
version information for
# DID profile support. The values are separated by ":" and assigner, VID, PID
# and version.
# Possible vendor id source values: bluetooth, usb (defaults to usb)
#DeviceID = bluetooth:1234:5678:abcd# Do reverse service discovery for 
previously unknown devices that connect to
# us. This option is really only needed for qualification since the BITE tester
# doesn't like us doing reverse SDP for some test cases (though there could in
# theory be other useful purposes for this too). Defaults to 'true'.
#ReverseServiceDiscovery = true# Enable name resolving after inquiry. Set it to 
'false' if you don't need
# remote devices name and want shorter discovery cycle. Defaults to 'true'.
#NameResolving = true# Enable runtime persistency of debug link keys. Default 
is false which
# makes debug link keys valid only for the duration of the connection
# that they were created for.
#DebugKeys = false# Restricts all controllers to the specified transport. 
Default value
# is "dual", i.e. both BR/EDR and LE enabled (when supported by the HW).
# Possible values: "dual", "bredr", "le"
ControllerMode = le# Enables Multi Profile Specification support. This allows 
to specify if
# system supports only Multiple Profiles Single Device (MPSD) configuration
# or both Multiple Profiles Single Device (MPSD) and Multiple Profiles Multiple
# Devices (MPMD) configurations.
# Possible values: "off", "single", "multiple"
#MultiProfile = off# Permanently enables the Fast Connectable setting for 
adapters that
# support it. When enabled other devices can connect faster to us,
# however the tradeoff is increased power consumptions. This feature
# will fully work only on kernel version 4.1 and newer. Defaults to
# 'false'.
#FastConnectable = false[Policy]# The ReconnectUUIDs defines the set of remote 
services that should try
# to be reconnected to in case of a link loss (link supervision
# timeout). The policy plugin should contain a sane set of values by
# default, but this list can be overridden here. By setting the list to
# empty the reconnection feature gets disabled.
#ReconnectUUIDs=00001112-0000-1000-8000-00805f9b34fb, 
0000111f-0000-1000-8000-00805f9b34fb, 0000110a-0000-1000-8000-00805f9b34fb# 
ReconnectAttempts define the number of attempts to reconnect after a link
# lost. Setting the value to 0 disables reconnecting feature.
#ReconnectAttempts=7# ReconnectIntervals define the set of intervals in seconds 
to use in between
# attempts.
# If the number of attempts defined in ReconnectAttempts is bigger than the
# set of intervals the last interval is repeated until the last attempt.
#ReconnectIntervals=1, 2, 4, 8, 16, 32, 64# AutoEnable defines option to enable 
all controllers when they are found.
# This includes adapters present on start as well as adapters that are plugged
# in later on. Defaults to 'false'.
AutoEnable=true


And bluetooth.service

[Unit]
Description=Bluetooth service
Documentation=man:bluetoothd(8)
ConditionPathIsDirectory=/sys/class/bluetooth[Service]
Type=dbus
BusName=org.bluez
ExecStart=/usr/libexec/bluetooth/bluetoothd -d -n --configfile 
/etc/bluetooth/main.conf
NotifyAccess=main
#WatchdogSec=10
#Restart=on-failure
CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
LimitNPROC=1
ProtectHome=true
ProtectSystem=full[Install]
WantedBy=bluetooth.target
Alias=dbus-org.bluez.service

** Affects: bluez (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: advertisement bluez bredr
-- 
 Incorrect advertise flags in bluetooth beacon using BlueZ 
https://bugs.launchpad.net/bugs/1868693
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