Error: Adding read ACL for uid 1000

 Error:

Adding read ACL for uid 1000 to /media/dongnvq failed: operation not supported

Solution:

open the terminal and execute following commands:

    sudo mkdir /media/$USER
    sudo chown $USER.$USER /media/$USER

the end.

C6NE1 - Linux

Tai lieu hoc Linux
   [22-03-2013] - working with shell
   [22-03-2013] - Initilize the Linux System
   [15-04-2013] - Putty for Telnet service

Solving for VGA card problem

Install or Reinstall nvidia Driver
You can download the driver from the Nvidia site.
Then you do install as following steps.

If you've enabled the restricted driver make sure you disable/deactivate it before doing the following.

1) Press Ctrl + Alt + F1. This will open up a terminal. You have to login with your username and password.

2) Then you have to stop Gnome by doing: sudo /etc/init.d/gdm stop
If it asks you for your password enter it again.

3) Then change to the folder where the installation file is stored and
run it by doing:

sudo ./NVIDIA-180...............run
(NVIDIA-180.........run is the name of the install file - pressing
tab will help you there)

4) The installer will start. If it asks you whether you want to download a kernel interface it's probably best to say no (never worked for me). If you choose not to it will then ask whether you want to compile a new kernel interface. Say yes. Then it starts installing. After it finishes it will ask whether you want to run nvidia-xconfig to configure xorg.conf . SAY YES. Installation complete.

5) You can start gnome again by running:

sudo /etc/init.d/gdm start

So that's it installation complete and it should be working well.

Solving for sound card problem

I had a laptop which have branch name: compaq presario CQ40 418TX. When i installed Ubuntu 9.04 on this laptop, i could not hear the sound card. I tried to manage and finally found out that ubuntu OS could not detect properly sound card. there was a mistake between sound card and modem. in order to solve this problem, please open an terminal and type thes command. you can fix this problem.

1.aplay -l
2.sudo apt-get purge pulseaudio gstreamer0.10-pulseaudio
3.sudo apt-get autoremove
4.sudo apt-get install alsa-base alsa-tools alsa-tools-gui alsa-utils alsa-oss linux-sound-base alsamixergui
5.sudo apt-get install esound esound-clients esound-common libesd-alsa0 gnome-alsamixer
Besides, there are some commands that help you to do more about sound card configuration.
aplay -l : list sound card
alsa reload ; reload alsa
lspci: list and read pci information
alsa -v

Install and Config Virtualbox_2.4.x on Ubuntu 9.04 host (part 2)

Hi all,

The previous post, i presented about installing Virtual Box on Ubuntu 9.04 host. This time, i would like to guide you to use a helpful feature of VBox which is shared folder. It can be seen that there are the common folder that Ubuntu host and Window OS guest can access and sharing data. In order to do so, you should do following configuration. (assume that your Virtual machine had already installed Window XP)

1. Config from Vbox.
From Vbox, choosing tab: "setting", then select share folder as above:
2. Starting your VMachine, from menu "device" select "Install Guest Addition" and patiently waiting for minutes until the plus package are complete downloaded from the Server.
3. After downloading completely, an screen appear the installation progress in Window Xp. After this step, you can see above icon.
You can see icon as a virtual CD and icon at system tray.
4. Open Run -> cmd --> net use z: \\vboxsvr\share_name
in which share_name is the name that you gave in share folder at first step.
wait a second and you are going to see the success.
From now on, you can access to share folder over driver Z.
Good luck!

Install and Config Virtualbox_2.4.x on Ubuntu 9.04 host (part 1)

Overview

I have just installed Ubuntu 9.04 and used as the primary OS. Ubuntu have been enormously developed in recently time with the support of developers. Ubuntu was integrated almost features which Window OS had, but there are some tasks the users need to use window such as control a scanner. I hope this features will be added on Ubuntu so far, however this disadvantage can be temporary tackled by using the above solution. Firstly, the users can install Virtualbox as an Virtual Machine on Ubuntu host. Secondly, create a new virtual machine in Virtualbox and install Window OS to use in some cases. Furthermore, the users can configure some add-on to use sharing Data between Linux host and window client. Here are some instructions in detail.
I. Download and install Virtual box
You need to download this software from website Virtualbox, then install it. However, i recommend that you do not do this manner because it is not convenient. I suggest that you should do as following steps:
1. Adding an CA into your "Software source" (Repository) by using terminal command (root mode)

wget -q http://download.virtualbox.org/virtualbox/debian/sun_vbox.asc -O- | sudo apt-key add -

2. from "System->Administration->Software Sources", selecting tab named "Third Party Software" , and click add button to type this text:
deb http://download.virtualbox.org/virtualbox/debian intrepid non-free
3. Reinstall or install
- for reinstall:
sudo apt-get remove virtualbox-ose virtualbox
- for new install:
sudo apt-get install virtualbox
or type this command:
sudo aptitude install virtualbox
4. Find your icon in Applications->System Tools->Sun VMx VirtualBox
or Accessory - > sun virtual box.
the above image is about Virtual box after installing and creating an new VM XP OS

Unix and WinNT

Hi All,

This link <Unix and WinNT> lead to Linux slides that you can download or review my lesson plans. I hope you will gain more knowledge after reading these studying materials. If you have any questions, please leave a comment for me.

Good luck!

Unix and WinNT