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Part I - The Problem:
My Dell laptop is not detecting my Samsung external monitor through the HDMI cable on Ubuntu 12.04. The same computer with the same monitor is working perfectly under my Windows 7 operating system.

Part II - The Computer Specifications:
Please visit the below link for the computer specifications:
http://pastebin.com/ZdMVsaAQ

Part III - The Operating System:
The operating system i am using now is Ubuntu 12.04 - Updated daily from the official main servers.

Part IV - The External Monitor Specifications:
- Brand: Samsung
- Model Number: S23A950D
- Model Code: LS23A950DSL/XM
- Link: http://www.samsung.com/my/consumer/pc-peripherals-printer/monitor/led-monitor/LS23A950DS/XY

Thanks in advance for your help!

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1  
540m is optimus enabled GPU. No support for linux by nvidia. So here is workaround - wiki.ubuntu.com/Bumblebee#Installation & configuring external monitor in such configuration - github.com/Bumblebee-Project/Bumblebee/wiki/Multi-monitor-setup .Read the wiring system first in this page. For your reference most probably your GPU is connected to HDMI port (2nd case in as mentioned in wiring paragraph) –  Web-E Feb 24 '13 at 7:34
    
Thanks for mentioning that (+1). That manual though seemed to be too hard for me to grasp. It is very confusing. I have already installed the bumblebee packages but i don't know what i should do the next step. Please help! –  CompilingCyborg Feb 24 '13 at 10:10
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