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There can be many problems due to which screen can go blank. But in my case it was the problem of refresh rate. Since my monitor supported 60 Hz only but by something which i couldn’t figure out have changed my refresh rate to 75 Hz. So i wasn’t able to log into the ubuntu GUI. I searched for the solution for it and found that the screen resolution in 8.10 is handled by a file monitors.xml.

And this file is located in home directory of user in .config directory.

I opened the the above file by:

$ nano .config/monitors.xml

And the following display came:
<monitors version= ” 1 ” >
<configuration>
<clone>no</clone>
<output name= ” default ” >
<vendor>??? </vendor>
<product>0×0000</product>
<serial>0×00000000</serial>
<width>800</width>
<height>600</height>
<rate>108</rate>
<x>0</x>
<y>0</y>
<rotation>normal</rotation>
<reflect_x>no</reflect_x>
<reflect_y>no</reflect_y>
</output>
</configuration>
</monitors>

I simply changed the rate from 75 to 60 and restarted GDM. And I was able to login to GUI of Ubuntu

To restart the gdm:

$ sudo /etc/init.d/gdm restart

This is how my problem was solved.

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I wasn’t expecting that i would get this much in this one week. But it all happened beyond expectation. जती सोची‍एको थियो त्यो भन्दा बढी पाए । म FossNepal र Diyaalo Enterprises लाई धन्यबाद दिन चाहन्छु ।
Day 1: I was pretty new in the field of Linux since most of my time on computing was with Windows until this day. But when i listened to the presentation given by the trainers about foss and Linux i was quite impressed and opted to be a linux user. This day we had basic information about the Foss and Linux, its speciality and its power.

I will be writing more about this training but since the schedule of the electricity is effecting m.

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Here are 10 predictions for linux in 2009 you can read about it in detail in Here

#1: Android
I think 2009 is going to see the Android mobile operating system finally showing Apple and the iPhone that there is, indeed, another game in town.

So far, we really only have the T-Mobile G1. But waiting in the wings are the Motorola Android phone, the Asus Eee Phone, the OpenMoko GTA02, and an LG Android phone. These are all rumored to be arriving some time in 2009. When they do hit the shelves, things are going to be interesting for the iPhone.

Think about it–an iPhone-like piece of hardware with open source software that anyone can develop for. No more App Store headaches. No more wondering if anyone might ever develop that killer app you need (or waiting for Apple to approve that killer app you need).

Add to that the fact that the operating system itself is open, which means when problems arise they will be fixed. Oh, and need I say “copy/paste”? I didn’t think so. 2009 will bring an end to the idea that the iPhone is the only smart phone to own.

#2: GNOME vs. KDE
I think 2009 will finally see GNOME rise above KDE as the better Linux desktop. For a long time, GNOME has been suffocated by the presence of KDE 3.x and with good reason–KDE 3.x was an outstanding desktop. KDE 3.x had everything a good Linux desktop should have: user friendliness, stability, flexibility, eye candy. GNOME was trying too hard to be a bad copy of OS X.

With the advent of KDE 4 the tables have turned.

This is not just a situation where KDE 4.x is so bad that GNOME, as bad as it is, is better. GNOME 2.24 is good, really good. GNOME has gone a little ways to restoring its roots and allowing a bit more flexibility with the desktop. But more important, GNOME 2.24 has finally found some solid footing. GNOME is now as stable as KDE 3.x ever was. And now that KDE has obviously decided to go down a much less popular route with KDE 4, it is going to have a hard year. More and more people and distributions will drop KDE in favor of GNOME. I realize there is no going back for KDE, but going forward better bring much more promise than this Linux desktop has shown thus far.

#3: Pre-installed
This has come and this has gone, I know. But HP is now promising to get into the “preinstalling Linux game” and that bodes well for the open source operating system.

Add to this the ever-rising tide of netbook sales, and preinstalled Linux sales will begin to show improvement and continue to improve throughout the year. This will not be a flash-in-the pan like we saw with Wal-mart selling desktops preinstalled to unaware consumers. This time around, people will continue to purchase netbooks with a Linux operating system perfectly matched for the purpose.

And look out Microsoft–Canonical (the founders/supporters of Ubuntu) is collaborating with AMD on a version of Ubuntu perfectly matched with the ARM processor (the processor common in netbooks.)

#4: Brtfs
Brtfs is the new copy on write file system that is focused on fault tolerance, repair, and administration. This file system offers Linux something that other file systems lack: the ability to scale to the level of larger enterprises.

Version 1 of this file system should arrive in 2009, which could mean that by the end of the year, distributions could be shipping with a large-scale, enterprise-ready kernel. This is big news for Linux because it will finally have the tools to overcome the biggest hurdle for enterprise adoption.

#5: OpenGL for the masses
This has been a long time coming. In 2008, NVidia released a version of OpenGL 3.0 driver for FLOSS OpenGL. But Mesa didn’t. Mesa, however, is back and working on a 3.0-compatible release. I am confident that other chip makers will follow suit. This will bring OpenGL to the Linux community in both proprietary and free sources.

Along with this, I can see far easier installations of such 3D desktops as Compiz-Fusion. Can you imagine Compiz-Fusion out of the box? On top of that, Linux will have a much easier time working with the newest video technology. Add to this the new drive to move video subsystems to the kernel level using GEM (Graphics Execution Manager) and KMS (Kernel Mode Setting).

#6: The cloud
I am going to preface this with a big “if”. IF cloud computing does finally gain any solid ground, Linux will lead the way.

Be it on the server end or the client end, Linux already has the tools it needs to create solid cloud environments. (It has for a long time.) Linux has always been ahead of Microsoft in this respect. And if the cloud actually develops into the storm the media has been predicting, Linux will reap many benefits. I, for one, am a little hesitant to say that the cloud has arrived. Amazon already has a Linux cloud out of beta.

#7: OpenOffice 3
2009 will see far more deployments, taking a chunk out of the Microsoft Office pie. OpenOffice 3 offers a host of new features that are just right for enterprise adoption. But that is not the real kicker. With the economy as it is, companies are doing everything they can to cut costs. One area of quick and painless cost cutting is office suites.

And when the typical end user starts to see how little difference there is between Microsoft Office and OpenOffice, the fire will spread rapidly. One of the issues keeping OpenOffice from the top of the charts is visibility. When people know there is a free alternative to Microsoft Office they will use it.

#8: Enlightenment
This one is a bit niche-y, but I have to address it. I believe that 2009 will see the developers of the Enlightenment desktop finally endorse E17 as stable. If you have followed the Enlightenment window manager (my favorite, by the way), you know that E16 has been the default forever and E17 has been the unstable development branch forever.

2009 will see E17 be listed as stable. However, I hope that E16 goes nowhere. The E16 version of Enlightenment is one of the best holdovers from Linux’ romantic period. I can still say, “This desktop I am using now is the same as it was when I was using back in the day.” So even when E17 becomes stable in 2009, I hope E16 is always around.

#9: Ubuntu
I see two things happening with Ubuntu. The first is that Ubuntu server will finally be adopted as a viable solution for enterprise server needs. The second is that Ubuntu 9.04 (Jaunty Jackalope) will find its way to the desktop and become the de facto standard of the user-friendly level of Linux operating systems.

Ubuntu already has a strong hold on entry-level user installs. With 9.04, Ubuntu will probably deliver the best benchmarking of any desktop Linux ever, as well as the best hardware support. With the possible adoption of EXA acceleration, ATI video cards will see vastly improved support, and wireless/Bluetooth will include a powering-down feature.

Ubuntu 9.04 will give Linux a much-needed push onto the desktop in 2009.

#10: Firefox
This one is quickly becoming a no-brainer. Firefox will, in 2009, finally usurp Internet Explorer as king of browsers. It’s been a long time coming, but the problems Internet Explorer has faced in 2008 will show Firefox reaping the benefits. And I think this time around, it will go well beyond Firefox seeing a jump in usage.

Firefox will take the lion’s share of the user base away from Microsoft. Because of this, the Net will become a safer place and fewer bugs will be reported. But by the end of the year, Google will release a mass-appeal-ready version of Chrome, which will chip into both Firefox’ and Internet Explorer’s pies. The browser wars will be renewed.