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ODROID C1 USER MANUAL
On some monitor models, one of the HDMI inputs is intended to
work with a PC and will disable overscan for that input (often HDMI 2).
You can also look at the monitor’s HDMI connectors for a label such
as PC Input, or read the monitor users manual to find the correct input
to use if applicable.
If you have used one of the above methods to change your LCD
monitor’s display mode and it does not help, or if your monitor does
not provide an overscan adjustment, use one of the following methods
to adjust the C1 video output directly.
Adjusting Linux Display Output
Installing xrandr and using the transform command can help fix
an overscan issue inUbuntu. Here is a typical adjustment using xran-
dr, which should be typed into a Terminal window:
$ xrandr –output HDMI-1 \
–transform 1.05, 0, -35, 0, 1.05, -19, 0, 0, 1
Command Line Interface
The Linux terminal CLI is the basic method of interacting with the
Linux system, normally using a shell called BASH. When a graphical
system is running, a Terminal window may be launched in order to is-
sue commands using the keyboard. Many Linux systems also come
with the Secure Shell (SSH) server, which allows a command line in-
terface to be invoked from a remote computer via Ethernet. Other
protocols, such as Virtual Network Computing (VNC) have the ability
to project the graphical environment to a remote computer as well.
BASH is a powerful scripting language as well as a means of
reading, creating, modifying, and launching files and programs that
are stored in the Linux file system. A collection of BASH commands,
called a script, can be saved to a file with the extension “.sh” and used
as an executable file. A shell script can perform many tasks, such as
configuring program variables, launching an application, and copying
or moving files.
Disk Partitions
Linux can read and write to a variety of disk formats, with the
most common called EXT3, EXT4, and FAT. If disk compatibility with
Windows and OSX is a priority, it is recommended to format external
drives as FAT32 which can be read by nearly all operating systems.
The root filesystem of Linux is usually in EXT3 or EXT4 format, which
can only be read by other Linux systems.
Disk partitions may be easily resized in order to use all of the
available space on a disk using a utility called Gparted. The image
Chapter 3
