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Archive for the ‘Tutorial’ Category

Did you have trouble when connecting your Linux to your network?  Did the network speed drop? Before you throw your computer, please check its log with dmesg. If dmesg shows repeated messages like eth0: link up and/or eth0: link down, then it must be your lan card driver problem. If you use Realtek LAN Card R8168, then it is the problem. Your Linux will load r8169 driver that have some bugs, instead of r8168. So, the solution of this problem is installing r8168 driver to your Linux, and disable r8169 module. Read the rest of this entry »

Actually, it’s simple thing to do. But i’ve mistaken the way to do it. I think that if i want to disable a kernel module, i just have to write ‘blacklist <module_name>’ in /etc/modprobe.d/blacklist.conf. But there is another step that have to be done to disable a modules from autoloading at boot time. Read the rest of this entry »

User Mode Linux (UML) is my favourite tool for simulating real network environtment. Because it’s simple and using small computer resources. But you can simulate a full working server in a UML. In this post, i will show you how to prepare a host computer for running User Mode Linux. Unlike Qemu, there is a ‘special treatment’ for the host so it can run UMLs. Read the rest of this entry »

Nowadays, RAM size is getting bigger than before. In 2004, i have desktop computer with 1 GB RAM. At that time, i think it’s more than enough. But today, computer with RAM size more than 2 GB is common. Few months ago, i upgraded my notebook’s RAM to 4 GB. But with 32-bit OS, only 3 GB that can be read. If you use Windows 32-bit version, dxdiag can read the actual memory size, but Task Manager only read maximum 3 GB. If you use Windows and have RAM more than 3 GB, you must install the 64-bit version. Read the rest of this entry »

Many people looking for tools to download youtube video or another online video. Maybe you should know websites like keepvid.com that can help us to download youtube video. Or maybe you know DownloadHelper, an addons for Mozilla Firefox to download any media from a website. But, do you know that we can download youtube or another online video, like metacafe, google video, etc, from our linux by using Google Chrome/Mozilla Firefox? I’ll show you how to do that. It’s very simple. Read the rest of this entry »

Hello guys, it’s been a long time since my last post.  I have many ideas to be written to this blog, but i didn’t know which one should be published first.

Just now, i’ve been working with User Mode Linux again. But now, it is easier to set up server as UML host. You just have to patch your host kernel with SKAS patch and install user-mode-linux and uml-utilities package from the repository. With user-mode-linux package, you will get a linux executable. For simple use, it is enough. But i found a problem when i want to add ip_vs module into my kernel. So i must compile my own linux kernel executable. And the bad thing is i forgot how to do that :mrgreen:. Because of that, i make this post, so i can remember it whenever needed. Read the rest of this entry »