If you installed Ubuntu 14.04 afresh, and selected home folder encryption, you will also get an encrypted swap partition. However, when the computer boots, you get the following error message: the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present.
Note that you need to have a proper data backup and make sure . . . → Read More: How to encrypt swap partition on Ubuntu 14.04 LTS
Those of us who use only Linux Laptops like Dell’s Vostro 3546 with Ubuntu 12.04 LTS installed on it, cannot just apply the BIOS upgrades that Dell provides on it’s web site. The BIOS update file is actually a MS DOS .EXE file and it requires MS DOS to work. Here’s how to apply the . . . → Read More: How to upgrade Dell BIOS on a Ubuntu laptop with FreeDOS
If you have the Nvidia Graphics Card in your laptop, you can install the Nvidia driver from your distribution (in my case Ubuntu), using following command. Open a terminal window first:
$ sudo apt-get udpate <enter> $ sudo apt-get install bumblebee bumblebee-nvidia primus <enter>
After that reboot, and you should have the Nvidia driver installed. . . . → Read More: How to install the nvidia driver on Ubuntu 14.04 LTS
Okay. So you want to generate a complex, long password. Open a terminal window and use the pwgen command in Linux as follows: $ pwgen -c -n -y -s 16 4 <enter>
where: -c include at least 1 capital in the password -n include at least 1 number in the password -y include at least . . . → Read More: How to generate a really good, complex and long password in Linux
After changing the UID and GID (User ID and Group ID numbers), I was not able to mount and USB pen drives or hard drives. This issue can be resolved by entering following commands in a Linux terminal: $ cd /media <enter> $ sudo chown -R user.group user <enter>
where user is the user name . . . → Read More: Not able to mount USB drive in Ubuntu Linux 14.04 after change of UID and GID
After copying music to the iPod, file names and folder names of the music files change to 4 characters with mp3 after them. Unfortunately, these do not identify the music file on an Android device or even the PC. Similarly, folder names too are changed. Could not find a way to get back the folder . . . → Read More: How to restore music file names from iPod on a Linux computer
Additional to all the other settings upon installation, also remove ubufox, if required as follows:
Open a terminal window and enter: $ sudo apt-get purge xul-ext-ubufox* <enter>
If you ever need to enable the root user in Ubuntu 14.04 LTS linux installation, you can do so as follows: Open a terminal window and type the following commands: $ sudo su -c <enter> # passwd root <enter>
Enter a strong password and restart the computer.
To make sure that you can login as . . . → Read More: How to enable and disable root user in Ubuntu 14.04 LTS
How to obtain WLAN traffic statistics using Gkrellm
Gkrellm is a powerful system monitor utility on Linux systems. If you need to obtain CPU temperatures, disk I/O, network traffic incoming and outgoing statistics (daily, weekly or monthly), then this is the right choice.
To gather a sizeable amount of WLAN traffic count, you need to . . . → Read More: How to obtain WLAN traffic statistics using Gkrellm