A. Troubleshooting on the  oprating system windows.

This time I will explain the problems that arise in the process of installing the operating system GUI-based network and how to perform troubleshooting. Public issue that occurs on a computer that is connected to the network, among others, as follows:

1. The Program installs herself and uses bandwidth. It can occur due to a virus, worm, spyware or the like. The improvement measures in doing is to do the windows updates the latest on computers that connect networks of pad and fix bugs that can spend band witch.

2. Worm and virus Attacks. A computer connected to the network at risk exposed to worms and viruses quickly. Therefore, the need to install antivirus software. For a PC, we recommend that you do not have file sharing, unless the PC is a file server. A server should not be running the excess service or services that are not required on the network.

3. Download of large files at peak hours. Usually, these conditions will result inhibiton of peroces data transfer to another computer if connected to a network. The solution of the problem, open the Windows “Control panel” and double-click “Scheduled tasks” and set the file download process in a major way by the time the clock is not busy.

B. Troubleshooting on the system oprasi Linux

Things — things that need to be done when either using oprasi Linux system.

1. Commands that we make in the terminal/console.

2. The sign # indicates a command and execute with a root privilege.

3. To enter the root privileges of typed command SU followed by the enter root password that we have.

4. Sign $ mean command a run on a terminal with right user access.

a. types of troubleshooting we will discuss troubleshooting to consist of different types of hardware and software on the Linux OS that is as follows:

1. Types of USB Linux, the command is used as follows.

#1susb

#dmesg

2. Type of PCI Linux, the command is used as follows.

#1spci

#1spcmcia

#dmesg

3. Error in VGA Linux, the command is used as follows.

To check the condition of the VGA:

#vi? etc/X 11/Xorg. conf for displaying the results of typing the following command:

#cat/var/log/Xorg.0.log

To localize the error by showing a command

#Glxinfo

4. Wi-Fi Hardware. Linux the command used is as follows.

#ifconfig

#iwconfig

#hwinfo — network

#1smod

5. To know the details of the hardware in use.

#hwinfo — (type of device)

Device type: all, arch, bios, block, Bluetooth, braille, bridge, camera, CDROM, chip card, CPU, disk, DVD, DSL, fingerprint, frame buffer, floppy, gfxcard, hubs, ideas, isapnp, isdn, keyboard, memory, modems, monitors, mouse, net card, network, partition, PCI, PCMCIA, printer, redasd, reallyall, sound, sys, tape, tv, usb, usb-ctrl, vbe, wlan, xen, zip. 

b. for the type of software used among others as follows.

1. If we are either screen resolutions, for example resolution screens on a laptop would be different types with a regular PC pad screen resolution, namely, resolution of the screen on the laptop is not automatically set to mode a WXGA (1280x800), in the system settings > display only two choice of the resolution that is 640 × 480 and 800 × 600, then the command we typed is as follows.

#yum install system-config-display

2. Setting the brightness. Type the following command.

#su-c ' nano/boot/grub/grub.conf '

#su-c ' nano/proc/acpi/video/VGA/LCD//brightness '

This command is used to view the problems and the level of brightness of the screen on the device.