[SOLVED] Restore a configuration file in modprobe.d and disabling internal bluetooth adaptor to use the external one

[lalincedeldeserto]

Hi!!!
I'm in trouble with modprobe from this morning. I used a command containing tee followed by a string with some options... Like this:

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echo "options rtl8723be msi=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

I was modifying the file named rtl8723be.conf. I don't know what it contained before... How can I get the default options?
wifi it's working correctly. This morning I was trying to set the internal Bluetooth adapter off in order to use the external one.

Laptop information:

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riccardo@riccardo-HP-ProBook-450-G2:~$ inxi -Fxz
System:    Host: riccardo-HP-ProBook-450-G2 Kernel: 4.15.0-38-generic x86_64
           bits: 64 gcc: 7.3.0
           Desktop: Cinnamon 3.8.9 (Gtk 3.22.30-1ubuntu1)
           Distro: Linux Mint 19 Tara
Machine:   Device: laptop System: Hewlett-Packard product: HP ProBook 450 G2 v: A3009DD10303 serial: N/A
           Mobo: Hewlett-Packard model: 2248 v: KBC Version 67.24 serial: N/A
           BIOS: Hewlett-Packard v: M74 Ver. 01.09 date: 01/26/2015
Battery    BAT0: charge: 27.9 Wh 96.5% condition: 28.9/28.9 Wh (100%)
           model: Hewlett-Packard Primary status: N/A
CPU:       Dual core Intel Core i7-4510U (-MT-MCP-) 
           arch: Haswell rev.1 cache: 4096 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10375
           clock speeds: max: 3100 MHz 1: 1622 MHz 2: 1389 MHz 3: 1271 MHz
           4: 1349 MHz
Graphics:  Card: Intel Haswell-ULT Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: x11 (X.Org 1.19.6 ) driver: intel
           Resolution: 1366x768@60.02hz
           OpenGL: renderer: Mesa DRI Intel Haswell Mobile
           version: 4.5 Mesa 18.0.5 Direct Render: Yes
Audio:     Card-1 Intel 8 Series HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Intel Haswell-ULT HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:03.0
           Sound: Advanced Linux Sound Architecture v: k4.15.0-38-generic
Network:   Card-1: Realtek RTL8111/8168/8411 PCIE Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: 4000 bus-ID: 08:00.0
           IF: enp8s0 state: down mac: <filter>
           Card-2: Realtek RTL8723BE PCIe Wireless Network Adapter
           driver: rtl8723be port: 3000 bus-ID: 09:00.0
           IF: wlo1 state: up mac: <filter>
Drives:    HDD Total Size: 380.1GB (11.2% used)
           ID-1: /dev/sda model: TOSHIBA_MQ01ABD0 size: 320.1GB
           ID-2: /dev/sdb model: Dogfish_SSD_60G size: 60.0GB
Partition: ID-1: / size: 55G used: 9.4G (18%) fs: ext4 dev: /dev/sdb1
           ID-2: /home size: 285G used: 23G (9%) fs: ext4 dev: /dev/sda1
           ID-3: swap-1 size: 9.00GB used: 0.00GB (0%)
           fs: swap dev: /dev/sda2
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 39.5C mobo: 0.0C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 225 Uptime: 29 min Memory: 1886.8/7848.9MB
           Init: systemd runlevel: 5 Gcc sys: 7.3.0
           Client: Shell (bash 4.4.191) inxi: 2.3.56 

[JeremyB]

Try

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sudo rm /etc/modprobe.d/rtl8723be.conf
sudo modprobe -r rtl8723be
sudo modprobe rtl8723

That should return you to defaults

Post results for

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lsusb

[lalincedeldeserto]

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riccardo@riccardo-HP-ProBook-450-G2:~$ sudo rm /etc/modprobe.d/rtl8723be.conf
[sudo] password di riccardo: 
riccardo@riccardo-HP-ProBook-450-G2:~$ sudo modprobe -r rtl8723be
riccardo@riccardo-HP-ProBook-450-G2:~$ sudo modprobe rtl8723
modprobe: FATAL: Module rtl8723 not found in directory /lib/modules/4.15.0-38-generic
riccardo@riccardo-HP-ProBook-450-G2:~$ sudo modprobe rtl8723be
riccardo@riccardo-HP-ProBook-450-G2:~$

Done it works!!
Thanks

[lalincedeldeserto]

Try

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sudo rm /etc/modprobe.d/rtl8723be.conf
sudo modprobe -r rtl8723be
sudo modprobe rtl8723

That should return you to defaults

Post results for

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lsusb

lsusb command produces these results

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riccardo@riccardo-HP-ProBook-450-G2:~$ lsusb
Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 05c8:0374 Cheng Uei Precision Industry Co., Ltd (Foxlink) 
Bus 002 Device 003: ID 138a:003f Validity Sensors, Inc. VFS495 Fingerprint Reader
Bus 002 Device 002: ID 0bda:b001 Realtek Semiconductor Corp. 
Bus 002 Device 005: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

[JeremyB]

Create a file named /etc/udev/rules.d/81-bluetooth-hci.rules
Add the following for contents

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SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="b001", ATTR{authorized}="0"

Reboot and the internal bluetooth won't interfere

[gm10]

Wouldn't a simple rfkill be easier, in particular for when he wants to switch back?

[JeremyB]

Wouldn't a simple rfkill be easier, in particular for when he wants to switch back?

The bluetooth managers don't work if rfkill is used but someone could do a hciconfig -a to see if hci0 or hci1 is the one they don't want working and then do sudo hciconfig hci? down to temporarily disable it

[gm10]

I didn't actually know that command, thx.

[lalincedeldeserto]

Create a file named /etc/udev/rules.d/81-bluetooth-hci.rules
Add the following for contents

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SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="b001", ATTR{authorized}="0"

Reboot and the internal bluetooth won't interfere

Thanks, man!! It's working greatly