Today I'm so fucked up facing Ubuntu having problem while restarting and shutting down. There were times that Ubuntu took more than a minute to halt even in a fast drive like SSD.

However, i finally managed to find a solution that solved this f****** problem and the fixes also improve the shutdown time and boot time.

The steps are as follows:

1. Open network-manager.conf (located in /etc/init/) and add this line ("kill timeout 1") after "stop on stopping dbus" line. See diagram for reference. Note that you'll need the root privilege to edit the file so simply type this command in the terminal:




Then, save all changes made to the file.

2. Open modemmanager.conf (located in /etc/init/) and add this line ("kill timeout 1") after "stop on stopped network-manager" line. See diagram for reference. Note that you'll need the root privilege to edit the file so simply type this command in the terminal:




Then, save all changes made to the file. Reboot/shutdown/power on your computer too see the result.

There's some case where this don't usually work and you'll have to do more than just editing the configuration file. To solve this, you have remove modem manager package from Ubuntu and delete the modemmanager.conf file manually (if somehow it's not deleted after removing the package).

To get this done, open a terminal session and run these commands:



The 2 commands above removed modemmanager package and deleted modemmanager.conf file respectively. If you run into problems with your mobile broadband after running those commands, feel free to install back modemmanager package by running this command:


Modemmanager is sort of an extension, that mainly brings few hardware related patches (only supports mobile broadband modems) to the existing Network (Gnome) manager in Ubuntu. Usually the default network manager should be able to handle the modem.

Source:
hecticgeek.com

Special thanks:
ActionPinarch from #ubuntu channel on freenode

Today i stumbled upon a tiny little program that can monitor your computer components such as processor and graphics card and display them so that you'll know if your computer is overheating. The program is psensor.



This program can be installed by running this command:

sudo apt-get install psensor

After installing it, jump over to your dash menu and type in 'psensor' (without the single quote of course) to start it manually. You can play with the preferences and yes, it will be executed on startup. Since this is bugging some people out there, you can hide the windows by checking 'hide window on startup' in the preferences menu.


** Don't bother about my high temperature coz i overclocked my computer. Yours should be a lot cooler.

Installing Google Chrome in Ubuntu 13.04 requires some work around since package 'libudev0' is not available in the Ubuntu 13.04 repositories. This only apply to fresh Ubuntu installation which mean if you're upgrading from Ubuntu 12.10, you'll never see this problem arise.




To fix this problem you have to resolve all dependencies especially the package libudev0 by manually downloading and installing it. Get the .deb package here:

• libudev0 for 32bit
• libudev0 for 64bit

Install libudev0 by using this command (refer image below) and reinstall Google Chrome. However you'll likely see error message like this:




This can be easily solved by running this command in terminal:

This is a simple note for myself since I've already forgotten how to change my Ubuntu hostname. And yes, seriously i forgot how to modify it already. Sigh~ So i googled it and poof!! This is how it can be done, in less than a minute.

1. Open up a terminal (note that biborn is my username and linuxbox is my current hostname).



2. Type in sudo nano /etc/hostname (you can use other text editor programs such as vi or gedit, I'll just use nano here).



3. The output should looks like this. (this is my current hostname, still unchanged).



4. Now just edit the text there. (I'm replacing "linuxbox" with "tralala").



5. Now just save the changes you've made and close the terminal session and then bring up a new terminal session. You'll see the changes.



6. We're not done yet. You'll face some problem such as message saying "cannot resolve your hostname" everytime you are running sudo command. To fix this, you have to edit the hosts file. Simply run this command 'sudo nano /etc/hosts' and edit the old hostname to match the new one.

My old hostname

My new hostname replacing the old one

And that's it! You're done and good to go.

**Some sources on the internet say that you have to reboot for the changes to take effect but in my case, I don't have to. I don't know why. Maybe because I'm running the latest version of Ubuntu 13.04. Feel free to clarify this.

However, in case if that does happens to you, and you want to avoid the hassle of rebooting your system you can just simply run this command to make the changes take effect immediately.

sudo /etc/init.d/hostname.sh start