The OSes are Debian (Stretch) 9.11.0 Lxde and Knoppix 8.6.1, in 64-bit operation. Have read the instructions on Debian Wiki.
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# lspci -knn | grep Net -A2; lsusb
02:00.0 Network controller [0280]: Intel Corporation Intel Dual Band Wireless-AC 3165 Plus Bluetooth [8086:3166] (rev 99)
Subsystem: Intel Corporation Dual Band Wireless-AC 3165 Plus Bluetooth [8086:4210]
Kernel driver in use: iwlwifi
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 5986:210f Acer, Inc
Bus 001 Device 003: ID 8087:0a2a Intel Corp.
Bus 001 Device 002: ID 03f0:0641 HP, Inc X1200 Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
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# hwinfo --netcard --wlan --bluetooth | grep -Ei "model\:|driver\:|status\:|cmd\:|file\:|detected\:" | grep -v "Config Status"
Model: "Intel Dual Band Wireless-AC 3165 Plus Bluetooth"
Driver: "iwlwifi"
Device File: wlan0
Link detected: yes
Driver Status: iwlwifi is active
Driver Activation Cmd: "modprobe iwlwifi"
Driver Status: wl is active
Driver Activation Cmd: "modprobe wl"
Model: "Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller"
Driver: "r8169"
Device File: eth0
Link detected: yes
Driver Status: r8169 is active
Driver Activation Cmd: "modprobe r8169"
Model: "Intel Bluetooth Device"
Driver: "btusb"
Driver Status: btusb is active
Driver Activation Cmd: "modprobe btusb"
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# rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
2: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
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# rfkill list all
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
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# sudo service bluetooth status
[ ok ] bluetooth is running.
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# lsmod | grep -Ei 'bt|blue'
btusb 40960 0
btrtl 16384 1 btusb
btbcm 16384 1 btusb
btintel 16384 1 btusb
bluetooth 290816 29 btrtl,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic 16384 1 bluetooth
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# dmesg | grep -i bluetooth
[ 18.833657] Bluetooth: Core ver 2.22
[ 18.833679] Bluetooth: HCI device and connection manager initialized
[ 18.833685] Bluetooth: HCI socket layer initialized
[ 18.833688] Bluetooth: L2CAP socket layer initialized
[ 18.833693] Bluetooth: SCO socket layer initialized
[ 18.984777] Bluetooth: hci0: read Intel version: 370810011003110e32
[ 18.984780] Bluetooth: hci0: Intel device is already patched. patch num: 32
[ 20.827856] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 20.827858] Bluetooth: BNEP filters: protocol multicast
[ 20.827863] Bluetooth: BNEP socket layer initialized
[ 54.988921] Bluetooth: RFCOMM TTY layer initialized
[ 54.988934] Bluetooth: RFCOMM socket layer initialized
[ 54.988941] Bluetooth: RFCOMM ver 1.11
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# sudo dmesg | grep -Ei 'blue|firm'
[ 12.540144] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 12.669831] iwlwifi 0000:02:00.0: loaded firmware version 29.1044073957.0 op_mode iwlmvm
[ 12.725664] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)
[ 18.833657] Bluetooth: Core ver 2.22
[ 18.833679] Bluetooth: HCI device and connection manager initialized
[ 18.833685] Bluetooth: HCI socket layer initialized
[ 18.833688] Bluetooth: L2CAP socket layer initialized
[ 18.833693] Bluetooth: SCO socket layer initialized
[ 18.984777] Bluetooth: hci0: read Intel version: 370810011003110e32
[ 18.984780] Bluetooth: hci0: Intel device is already patched. patch num: 32
[ 20.827856] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 20.827858] Bluetooth: BNEP filters: protocol multicast
[ 20.827863] Bluetooth: BNEP socket layer initialized
[ 54.988921] Bluetooth: RFCOMM TTY layer initialized
[ 54.988934] Bluetooth: RFCOMM socket layer initialized
[ 54.988941] Bluetooth: RFCOMM ver 1.11
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# sudo bluetoothctl
Raed the iwlwifi wiki.Agent registered
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# apt install firmware-iwlwifi
Packages Installed:Reading package lists... Done
Building dependency tree
Reading state information... Done
firmware-iwlwifi is already the newest version (20190114-2).
0 upgraded, 0 newly installed, 0 to remove and 446 not upgraded.
blueman-manager is not loading. blueproximity is loaded. Are the two clashing? Any advice please.bluefish blueman-manager bluemon-client bluetoothctl
blueman-adapters blueman-report bluemon-query bluetoothd
blueman-applet blueman-sendto bluemoon bluewho
blueman-assistant blueman-services blueproximity
blueman-browse bluemon bluetooth-sendto
Over the next few days the Buetooth device has to be activated. Currently doesn't work.
Uninstalled blueproximity. Then reinstalled bluemon-manager and then bluez. Currently, experimenting on Knoppix. Same flavour as Debian. Shows Possible Errors. Fault Point: sbl? Synaptic Output:
Possible Fault-Point? Is sbl Sound Blaster Live?:(Reading database ... 481044 files and directories currently installed.)
Preparing to unpack .../bluez_5.50-1.2~deb10u1_i386.deb ...
Unpacking bluez (5.50-1.2~deb10u1) over (5.50-1.2~deb10u1) ...
Setting up bluez (5.50-1.2~deb10u1) ...
[ ok ] Reloading system message bus config...done.
insserv: warning: script 'K01smail' missing LSB tags
insserv: warning: script 'adriane-battery' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `adriane-battery'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `adriane-battery'
insserv: warning: script 'adriane-screenreader' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `adriane-screenreader'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `adriane-screenreader'
insserv: warning: script 'firewall' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `firewall'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `firewall'
insserv: warning: script 'knoppix-autoconfig' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `knoppix-autoconfig'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `knoppix-autoconfig'
insserv: warning: script 'knoppix-halt' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `knoppix-halt'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `knoppix-halt'
insserv: warning: script 'knoppix-startx' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `knoppix-startx'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `knoppix-startx'
insserv: warning: script 'knoppix-terminalserver' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `knoppix-terminalserver'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `knoppix-terminalserver'
insserv: warning: script 'sbl' missing LSB tags
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `sbl'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `sbl'
insserv: warning: script 'smail' missing LSB tags
[ ok ] Stopping bluetooth: /usr/sbin/bluetoothd.
[ ok ] Starting bluetooth: bluetoothd.
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for dbus (1.12.16-1) ...
Running prelink, please wait...
No, there isn't any problem in Debian, Installed first the gnome-network-manager and the network-manager packages first for ease and familiarity. Then re-ran the steps, re-installing the firmware iwlwifi. Reinstalled blueman but not blueproximity. Now the Bluetooth works and finds other bluetooth enabled devices. There is no issue. So Post marked as Solved.insserv: warning: script 'sbl' missing LSB tags
user is in the group bluetooth.
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bluetooth:x:ddd:user
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rfkill list all
Shall proceed to do the same in Knoppix too.
Thanks to those who visited my query at debian-user List for support, especially, deloptes, who showed seriousness this time.
In the end, the Knoppix issue is also solved by the same code given above with a minor alteration, i.e.,:
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bluetooth:x:ddd:knoppix