Solving the BusyBox black screen problem in grub2/Ubuntu9.10 December 31, 2009
Posted by Sayantan in Linux Mint, Ubuntu, linux, ultimate edition 2.0.Tags: black screen, busybox, grub2, no boot, Ubuntu, ubuntu 9.10, update-grub
1 comment so far
Have you ever had a situation when Ubuntu was running perfectly fine moments ago and after restarting the system you are greeted with a black screen with white letters saying
‘Gave up waiting for device….
BusyBox v1.13.3(Ubuntu …….)
(initramfs)’??? I’ve had a few.
The screen is something like the one shown above. This is caused when the root drive is not available or not recognized while ubuntu is loading. Generally in grub 2 the drive is recognized by the UUID. This UUID does not match sometimes due to some inexplicable reason( atleast to me!). So there I was, with a laptop with a black screen. Google failed to find me a solution (for the first time!) or may be I didn’t search properly! Anyway, I had to play around with my system a little more and found out a simple solution.
For this workaround, you need to do two things.
1. Find out the root drive partition i.e. /dev/sdax or /dev/hday , where x and y are numbers. (If you know it then it becomes all the more easy.)
2. Replace the UUID with this /dev/sdax
Assuming you do not know/remember the root drive partition number, you would need to get hold of any live cd of Ubuntu or any linux OS.
Boot into the live cd and open a terminal
type this command
sudo fdisk -l
Then find the linux drive. It will be listed something like this
/dev/sda2 6 1918 15360000 83 Linux
So here /dev/sda2 is ur root drive.
In-case, you have two or more drives for linux and you are getting confused, go the GUI way! Open Gparted from System->Administration.
You will get something like the one shown below.

As you can see , it clearly tells the /home and / (root) partition. Once you make a note of this restart the system and bring you computer upto the grub menu.
Now here press e to edit the screen. The line you should be editing would look something like this
linux /boot/vmlinuz-2.6.31-16-generic root=UUID=xxxxxxxxxxxxxxxx ro quiet splash
delete that part UUID=xxxx and enter your root drive partition. It should look like this
linux /boot/vmlinuz-2.6.31-16-generic root=/dev/sdax ro quiet splash
After editing, press TAB. You must press TAB. Else, it will not register. Then press ctrl+x to boot. You will be able to boot into Ubuntu 9.10 once again. Now, once you are in, open a terminal and run
sudo grub-update
This is to make the changes permanent. If you do not do this , every time you will have to make the manual changes. That’s it. Enjoy Ubuntu!
I hope this post will help a lot of new Ubuntu users.
Cheers!
DavMail, the Outlook killer? December 3, 2009
Posted by Sayantan in Ubuntu, linux, red hat.Tags: access exchange calender on linux, calender, davmail, evolution, evolution MAPI, exchange, GAL, global address book, linux, outlook, thunderbird, ubuntu 9.10
add a comment
For times immerorial, Linux users have had a problem with MS Exchange mail, Global Address Books and Exchange calenders. Users had to be content with accessing the email only through IMAP and by manually creating contact lists on their systems. The OWA will work well only with IEs . The moment it detectes firefox, it switches to the lite version which literally sucks. So linux users were left with no choice to .Well , this seems to have change somewhat. While looking through the internet, I stumbled upon this excellent piece of software via which you can access your mails, your Global address List and Exchange Calender in no time.
Enter Davmail, a very simple java program which can really give MS outlook a run for its money.
- Prerequisite : Sun J2SE 1.5 or 1.6.
- You should first download and install Java, with the graphical package manager or through command line.
- Download the linux x86 DavMail package from here and uncompress it with your favourite tool. The standard package will run natively on x86, to use DavMail on any other hardware platform, replace the SWT with the right one from http://www.eclipse.org/swt/ or use the platform independent package.
- On Ubuntu and other Gnome or Kde distributions, just use the desktop launcher. On other distributions, try davmail.sh. You should now see the DavMail gateway icon in the tray .
- You will need to add this program on your startup list to make it start when your computer starts to prevent it from manually starting the program every-time.
- The application can be found under Application-> Internet->Davmail or try typing davmail after opening the terminal
- Before you add anything to the calender , rightclick on the davmail icon on your status bar and insert the OWA link of your MS exchange mailbox in the OWA box under the main tab.
- If you are using thunderbird, the lightning extension,needs to be installed to add calender features . After that you need to click on add a calender
- Select to create a network calender
- Choose CalDav format and specify location (adjust port to your settings):
http://localhost:1080/users/username@company-name.com/calendar
- Choose a name, color and set the associated email address (as set in mail setup)
- Provide your credentials, login is Active Directory account name, i.e. ur full email address and password.
- Click on finish and you are done with your MS exchange calender setup.
Public Calenders
- You can also access public calenders created on the exchange server.
- Right click on the calender list to create a new calender and in the location box enter the following
http://localhost:1080/public/calender_name
Please note: Public calender support is still under testing and it may not work perfectly for everyone.
Global Address List
- Follow the screenshots to setup ur global address list
- Choose a name, host is always localhost, LDAP base context ou=people, adjust port to your settings and set user to your Active Directory account name, i.e. domain\account.
- Click ok and save it. then open the file again to download the addressbook for offline use.
- After this you can use the global address book
- You can download Davmail here.
Karmic Koala Installation failure November 9, 2009
Posted by Sayantan in Ubuntu.Tags: linux, ubuntu 9.10, ubiquity, migration assistant, karmic koala
add a comment
There has been reports of installation failure at the fag end of a clean installation on Ubuntu 9.10. This generally happens when you have a Windows partition in your hard drive. The reason of failure is the Ubiquity Migration Assistant which is used to migrate the ‘My documents’ folder from Windows to Ubuntu. This,in previous releases, would ask for user’s permission to start. But in this edition, it somehow automatically kicks in and while migrating folders it crashes. I have found a workaround for this.
1. Select to boot into the live cd instead of directly installing .
2. Open a terminal after you reach the live desktop and type
$ ubiquity –no-migration-assistant
3. Follow the on screen instructions to do the normal installation
The installation will complete without the migration assistant running.
pidgin reinstated as primary IM client in ubuntu 9.10 September 1, 2009
Posted by Sayantan in Ubuntu, linux.Tags: alpha 5, IM, pidgin, ubuntu 9.10, video, voice
1 comment so far
I have been following the ubuntu 9.10 development since alpha 4. After the launch of pidgin voice/video services, there were talks of removing empathy from the default installation of ubuntu. After today’s update, i saw, that empathy has automatically been removed, and pidgin has been reinstated as the default IM client for Ubuntu 9.10.
Readers please d0 confirm with me .
Update: Empathy is the default IM client.











RSS - Posts