Hi
And also providing the journalctl -f log for your reference.
root@imx8mpsolidrun:~# journalctl -f
– Journal begins at Wed 2021-03-24 10:25:18 UTC. –
Dec 22 09:18:14 imx8mpsolidrun systemd[1]: Started Bluetooth service.
Dec 22 09:18:14 imx8mpsolidrun systemd[1]: Started Hostname Service.
Dec 22 09:18:44 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 7 messages.
Dec 22 09:18:44 imx8mpsolidrun systemd[1]: systemd-hostnamed.service: Succeeded.
Dec 22 09:19:41 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 1 messages.
Dec 22 09:30:01 imx8mpsolidrun crond[1898]: pam_unix(crond:session): session opened for user root(uid=0) by (uid=0)
Dec 22 09:30:01 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 1 messages.
Dec 22 09:30:01 imx8mpsolidrun CROND[1899]: (root) CMD (/usr/bin/ntpdate-sync silent)
Dec 22 09:30:01 imx8mpsolidrun CROND[1898]: pam_unix(crond:session): session closed for user root
Dec 22 09:30:01 imx8mpsolidrun kernel: audit: type=1006 audit(1703237401.492:14): pid=1898 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=7 res=1
Dec 22 09:31:41 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 2 messages.
Dec 22 09:32:56 imx8mpsolidrun audit[1847]: ANOM_ABEND auid=4294967295 uid=0 gid=0 ses=4294967295 pid=1847 comm=“bluetoothd” exe=“/usr/libexec/bluetooth/bluetoothd” sig=6 res=1
Dec 22 09:32:56 imx8mpsolidrun bluetoothd[1847]: dbus[1847]: arguments to dbus_message_iter_get_fixed_array() were incorrect, assertion “(subtype == DBUS_TYPE_INVALID) || (dbus_type_is_fixed (subtype) && subtype != DBUS_TYPE_UNIX_FD)” failed in file …/…/dbus-1.12.20/dbus/dbus-message.c line 2480.
Dec 22 09:32:56 imx8mpsolidrun bluetoothd[1847]: This is normally a bug in some application using the D-Bus library.
Dec 22 09:32:56 imx8mpsolidrun bluetoothd[1847]: D-Bus not built with -rdynamic so unable to print a backtrace
Dec 22 09:32:56 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 3 messages.
Dec 22 09:32:56 imx8mpsolidrun systemd[1]: bluetooth.service: Main process exited, code=killed, status=6/ABRT
Dec 22 09:32:56 imx8mpsolidrun kernel: audit: type=1701 audit(1703237576.164:15): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=1847 comm=“bluetoothd” exe=“/usr/libexec/bluetooth/bluetoothd” sig=6 res=1
Dec 22 09:32:56 imx8mpsolidrun systemd[1]: bluetooth.service: Failed with result ‘signal’.
Dec 22 09:33:35 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 2 messages.
Dec 22 09:33:35 imx8mpsolidrun systemd[1]: Starting Bluetooth service…
Dec 22 09:33:35 imx8mpsolidrun systemd[1]: Starting Hostname Service…
Dec 22 09:33:35 imx8mpsolidrun sdptool[1918]: Serial Port service registered
Dec 22 09:33:35 imx8mpsolidrun systemd[1]: Started Bluetooth service.
Dec 22 09:33:35 imx8mpsolidrun systemd[1]: Started Hostname Service.
Dec 22 09:34:05 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 5 messages.
Dec 22 09:34:05 imx8mpsolidrun systemd[1]: systemd-hostnamed.service: Succeeded.
Dec 22 09:34:41 imx8mpsolidrun systemd-journald[255]: Forwarding to syslog missed 1 messages.
And from the mobile device nRF connect is giving the below log message
Error 133 (0x85): GATT ERROR
So, please let me know the causes behind the procedure.