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I just intalled Ubuntu 13.04 a few days ago and I have a few problems. I'll list 'em out.

  1. The OS detects my Samsung LED 20" Monitor as a laptop monitor and doesn't allow me to go to my full res(1600 x 900), I only have a single monitor.

  2. Whenever I boot Ubuntu, I get a flickering screen of various colours. I go to recovery mode and give the command dpkg to get it to work properly.

My Video Card is an AMD RADEON 6750 and I don't know what an Adapter is. My Monitor is connected by a standard cable. If I run this code:

            lspci | grep VGA

I get this:

            01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks PRO [Radeon HD 6570]
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These sound more like they are video card problems (possibly) as opposed to monitor issues. Can you provide us with your video graphics adapter and driver and edit your original question with this detail? For starters, let's run (in terminal) lspci | grep VGA. Additionally, how is the monitor connected (DVI or HDMI)? –  gravity Jun 12 '13 at 16:29
@gravity I updated the question. pls answer. –  Sharath Devasahayam Jun 15 '13 at 7:06
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