How can I deactivate Bluetooth on system startup?


Answer #: 1

Run sudoedit /etc/rc.local and add this before line with exit 0:

rfkill block bluetooth

You should still be able to enable Bluetooth through the top bar applet.

This should work for most systems but it looks like there are a few bugs lurking in the kernel’s ACPI for Thinkpads. If you’re on a Thinkpad, add the following to /etc/rc.local:

echo disable > /proc/acpi/ibm/bluetooth

Or check out ibm-acpi – IBM ThinkPad ACPI Extras Driver — some reports suggest that ibm-acpi includes bluetooth control (amongst other nice things). But I don’t have the hardware so I’m completely unable to verify these claims. Good luck.

Answer #: 2

To disable the bluetooth driver from loading on startup:

sudo $EDITOR /etc/modprobe.d/blacklist.conf


blacklist btusb

Enabling it later should just be:

sudo modprobe btusb

Answer #: 3

Answer #: 4

Step 1: Go to the terminal and type in the following command to edit...

0 0

How to disable bluetooth device when startup on Ubuntu 12.4, I've accessed /etc/init/bluetooth.conf file and comment #start on started dbus line. But when PC bootup Bluetooth device still running.

How can I disable bluetooth device when system startup?


This will disable bluetooth service on startup:

# bluez - bluetooth daemon description "bluetooth daemon" #start on started dbus stop on runlevel [0123456]

It seems that an error occured when you edited bluetooth.conf file. Do you comment stop on stopping dbus?

If you want to turn off bluetooth device, try remove it from kernel module load at startup. Edit /etc/modprobe.d/blacklist.conf, add a line:

blacklist bluetooth

You can try adding the following line:

sudo hciconfig hci0 down

to /etc/rc.local before the exit command. You can edit the file using sudo nano...

0 0
0 0

Bluetooth and related Topics

openSUSE 11.1

The following information is a fix to bug 461369 [1]. "hcitool cc " reports "Can't connect: Input/output error", and "bluetoothd -nd" reports that it can't connect to d-bus. This is a problem with the bluetooth kernel driver not working properly. The solution is to "modprobe btusb reset=1" as root. Then add the following line to your /etc/modprobe.conf.local file (again, as root):

options btusb reset=1

This should allow bluetooth to function after subsequent reboots.

If this workaround doesn't resolve the problem, you can try to change the /etc/dbus-1/system.conf file. You should comment the lines:

And add the following ones:

The resulting file should appear as following:

Then restart the computer.

If you are having issues with kde's bluetooth frontends on 11.1 try installing gnome-bluetooth and bluez-gnome, and running bluetooth-applet. This does not work, but it gives you...

0 0

Here are some unofficial timings from a stopwatch.

I have a 6 year old HP laptop with 4GB memory and a 512 GB SSD for my system drive. I timed for the shutdown scenarios from the time I hit the power button until the Hello/desktop screen appeared. I also took an intermediate time from when the Windows logo displayed until the Hello/desktop screen appeared.

Fast Start feature is enabled on the system.

Shutdown from the Start Button, 24.56 sec, 5.92 sec, No BIOS start screen
Right click Start Button and Shutdown, 25.03 sec, 5.92 sec, NO BIOS start screen
Cmd line shutdown from your post, 38.94 sec, 19.3 sec, BIOS start screen does appear
Restart from Start Button, 34.44 sec, 19.67 sec, BIOS start screen does appear
Right click Start Button and Restart, 39.68 sec, 19.41 sec, BIOS start screen does appear
Win + X shutdown, 25.51 sec, 6.65 sec, NO BIOS start...

0 0

Hello Linux Geeksters.

In this article I will show you a few methods for disabling the bluetooth adaptor, at startup. It is enabled by default and eats up a lot of batery. It should not be activated on boot, unless you use bluetooth keyboard or mouse or other gadgets that need it, every day.

Method 1:

Open the /etc/rc.local file with your favourite text editor:

$ gksudo vim /etc/rc.local

And type the following text, before “exit 0”:

rfkill block bluetooth


The /etc/rc.local file stores scripts or commands that run at the end of each runlevel. rfkill block bluetooth terminates the bluetooth process at startup.

Method 2:

There are some issues with this command on Lenovo Thinkpads, so, for Lenovo Thinkpads only do this:

Open the /etc/rc.local file with your favourite text editor:

$ gksudo vim /etc/rc.local

Paste this to /etc/rc.local, before “exit 0”:

echo disable >...

0 0

I have developed a C application and I am also using a Yocto_MiniDisplay, which prints some messages from the application.

I need to start the application on System Start up, so that on the display it shows "Welcome".

I am unable to start the application automatically on system startup.
I am also using a virtualhub application for yoctopuce devices.

Please Help me its really urgent.

i am using ubuntu 12.04. i dont want any other applications just i need to run only my application on startup .The problem i am facing is the lcd devices are not getting initailized. currently i have connected display with usb.

how to add time out in starting an application in ubuntu. which is the best way to add our application to system start...

0 0

1. block bluetooth in rc.local

Add this line at the end of the file /etc/rc.local right before the line exit 0:

rfkill block bluetooth

This will do the trick, but only in older Ubuntu versions using upstart.

2. reenable rc.local on systemd

On Ubuntu 15.10 with systemd as startup manager the /etc/rc.local file is not used by default any more, so call this on a terminal:

sudo systemctl edit --full rc-local

Which opens an editor. At the end of the file i added:


Those changes are activated by

sudo systemctl reenable rc-local

Now the file /etc/rc.local is used as you know it.

3. disable blueman-applet on start

sudo sed -i 's/NoDisplay=true/NoDisplay=false/g' /etc/xdg/autostart/blueman.desktop gnome-session-properties

Now blueman-applet is visible and you can disable it fon start

4. Reboot to see the...

0 0
0 0

To turn Bluetooth ON when your systeem starts up do the following:

Open a Terminal (CTRL+ALT+T).

Enter the following line only if you don't have gksu installed.

sudo apt-get install gksu -y

If you have GKSU (installed or already have) enter the following:

gksudo gedit /etc/rc.local

The rc.local fill will open up, add the following line before the exit 0:

rfkill unblock bluetooth

Now enter the following line in a terminal:

sudo reboot To turn Bluetooth OFF when your systeem starts up do the following:

Open a Terminal (CTRL+ALT+T).

Enter the following line only if you don't have gksu installed.

sudo apt-get install gksu -y

If you have GKSU (installed or already have) enter the following:

gksudo gedit /etc/rc.local

The rc.local fill will open up, add the following line before the exit 0:

rfkill block bluetooth

Now enter the following line in a terminal:

sudo reboot

To switch between ON or OFF you can use...

0 0

House parties or a small get together, we all need some music to lighten up the mood and thanks to our smartphones and speakers, things are taken care of quite easily. Bluetooth or aux cables, our phones clubbed with some nice local or online playlists is enough to entertain the guests for hours. But while you are addressing your guests or even playing a game of Tambola, do you have to shout just to make yourself audible?

Well, today I am going to talk about some awesome apps that will give your larynx some rest in such situations and at the same time make you look cooler. I am going to talk about a few apps using which you can turn your Android phone into a mic and make yourself heard from the speakers you have.

First of all, we will have a look at how to get that done for Bluetooth speakers and then check out for the ones that use aux cables.

Real-time Mic For Bluetooth Speakers

Let’s check out the two apps that work when you have connected a...

0 0

This article was used by Microsoft to create a set of automatic fixes (Microsoft FixIt). See:

Unfortunately, many Excel users sometimes start experiencing problems with their Excel: File not found errors, compile errors, GPF's, Excel refusing to load, files which do not open, etcetera.

This is a list of things-to-try when Excel exhibits problems.


Microsoft have created a tool that searches your Office installations for known problems. It is called The Office Configuration Analyzer Tool (OffCAT).

You can download and install OffCAT v1.2 from the Microsoft Download site. You can either extract the files from or you can run the installer using OffCAT.msi. We recommend using OffCAT.msi because it contains system requirement checks that ensure OffCAT will properly function on your computer.

What is the target audience for OffCAT?

OffCAT is designed to be...

0 0

Wireless can be enabled or disabled using rfkill tool. Here is solution based on it, that will allow to save state and restore it at system startup.

Step 00: creation of file to store wifi state

cd /usr/local/etc sudo touch .wifistate sudo chmod 666 .wifistate

Step 01: script

#!/bin/bash IFACE="wlan1" STATE_FILE="/usr/local/etc/.wifistate" STATE="$(iwconfig $IFACE | grep Tx | cut -d '=' -f2 | grep off)" if [ "$STATE" ] then rfkill unblock wifi && echo 1 > "$STATE_FILE" && echo "Wireless enabled" else rfkill block wifi && echo 0 > "$STATE_FILE" && echo "Wireless disabled" fi exit 0;

Step 10: making script executable

chmod +x

Step 11: modifying Ubuntu startup script

open /etc/rc.local in any text editor (must be edited as root) and add following code
before exit 0; line:

FILE="/usr/local/etc/.wifistate" if [ -r "$FILE" ] then if [ $(cat $FILE) -eq 0 ] then rfkill block wifi fi else...
0 0

I recently bought a new Dell Inspiron 7437 and one of the first few things I did was to dual boot the pre-installed Windows 8 with Ubuntu 14.04. My older laptop did not have Bluetooth, strange but true. This is why I never noticed that Bluetooth is always on at each boot in Ubuntu.

This is not good, from both power saving and security purpose. Moreover, I hardly use Bluetooth, so why should I have Bluetooth enabled by default? While one can turn off Bluetooth in one click in Ubuntu, doing it in each session is a repetitive and frustrating task. Simpler solution is to deactivate Bluetooth at start up in Ubuntu.

In today’s quick post, I’ll share with you how to disable Bluetooth by default at each start up.

Turn off Bluetooth by default in Ubuntu 14.04:

Open a terminal and use the following command to install gksu, if you dot have it installed it already.

sudo apt-get install gksu

gksu is used to enter password while running a program as...

0 0
0 0

When it launches in the fall of 2013, the refreshed 2014 Chevy Malibu will be the first sedan in its class to offer a stop/start system as standard equipment in the United States. To conserve fuel, the system shuts off the 2.5 liter I4 (LCV) engine when the Malibu comes to a stop, with all electric accessories, such as air conditioning, radio, and lights, among others, continuing to work via the auxiliary battery. As soon as the driver lifts his or her foot off the brake pedal, the powerplant springs back to life.

Since learning about the system, several GM Authority readers have written in asking about the behavior of the stop/start system in the event that the auxiliary battery doesn’t have enough power to continue running the air conditioning (or other accessories), and how the system works in stop-and-go traffic. So we reached out to Chevrolet spokesman Chad Lyons for clarification, who was kind enough to provide a great explanation of the logic employed by the...

0 0