I was trying to boot a newly installed Ubuntu box into text mode. The usual methods failed and after googling a little I figured out that Ubuntu 16,04 uses systemd for controlling startup services. The solution for the problem is
Currently, I am using an Asus X200M netbook with ubuntu 14.04 lts. The keyboard of the netbook is slighly small compared to regular laptop. This is a slight drawback of all netbooks. For me it took only a couple of hours to get adjusted to the new keyboard.
However, while typing, my thumb inadertently touches the touch pad and the cursor jumps to some random location. I am always using an external mouse for navigation as I dont like to use t touch pad . So I decided to find out a way to disable the touch pad when I am typing long documents.
Here are the steps for disabling and enabling touch pad.
Find out the device id of your touch pad. Open a terminal and type
$ xinput list
Look for the id of your touch pad. In my case the touch pad is detected as a logitec mouse and the id is 13. The other mouse shown in the figure is my external mouse. If in doubt, remove the external mouse and re run the command to find out the correct device id.
In order to disable touch pad type the following command.
$ xinput set-prop 13 "Device Enabled" 0
You can eneable the touch pad by changing 0 to 1 in the command above.
I have been tinkering with NodeMCU devkit boards recently. The easiest way to program these little beasts is to use arduino platform and install the compilers and other tools from . Unfortunately the stock arduino shipped with ubuntu 14.04 is quite old. You need a recent version of arduino software. to get the esp8266 board working.
Here is what I did.
Removed the existing arduio installation
My nodeMCU collection.
$ sudo apt-get remove arduino
Download the appropriate arduino software from arduino.cc. This is available for both 32 bit and 64 bit editions. Choose the correct version.
The arduino software platfrom is written in Java. So install java runtime.
$ sudo apt-get install openjdk-7-jre
Unzip the arduino software and move it to an appropriate location. I moved it to /opt.
tar -xJf arduino-1.6.4-linux64.tar.xz
sudo mv arduino-1.6.4 /opt
Add appropriate path to .bashrc file.
I added PATH=$PATH;/opt/arduino-1.6.4/bin. Change it according to your arduino location and version.
We resently bought several Asus X200 series netbooks for our faculty members. The main attraction of this cute netbook is its light weight and a built in HDMI port. We plan to use them extensively for content delivery in class rooms. These machines are really cheap, costing around Rs17000 ( around $260). The base model comes with Intel® Celeron® Dual-Core ~ 2.58 GHz Processor and 2GB ram, DOS operating system. It has an 11.6 inch LED display.
Our idea was to put ubuntu 14.04 and deploy the machines. The machine has an ethernet port and wifi port. Installation of Ubuntu 15.10 was a smooth affair. Unfortunately, the broadcom wifi interface did not work out of the box. Here is what I did to fix the issue.
Find out which wifi chip is used.
The wifi chip is Broadcom Corporation BCM43142. You have to download and compile the kernel module for this chip.
2) Make sure that the machine is connected to internet and the apt sources are properly set up