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I recently installed 12.04 LTS. However, the the graphical desktop is "broken" (it seems that the screen drawing is failing, fading and flashing each of the "triangles" created on the screen). I tried uninstalling and reinstalling the system several times and this did not work. Is there something that can fix this?

untranslated original: ola pessoal, sou uruario linux a 1 ano, recentemente instalei no pc o linux ubuntu 12.04 lts precise pangolin mas ele fica com a interface grafica "quebrada" (parece que a tela foi dividida de ponta a ponta e fica falhando, sumindo e piscando em cada um dos "triangulos" criados na tela) eu gostaria de saber como posso resolver este problema, pois ja tentei desintalar e reinstalar o sistema varias vezes e nao funcionou(ja ate baixar a versao de outros sites mas deu na mesma) existe algo a ser feito ou devo usar o windows mesmo?

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You may try to install video drivers for your system. In a terminal, type:

sudo apt-get install flgrx

if you have an ATI card, or

sudo apt-get install nvidia-current

if you have an Nvidia graphics card.

If this fails, try logging in with Ubuntu 2D(On the login window, click the gear icon, and pick Ubuntu 2D), or try using LDXE(sudo apt-get install lubuntu-desktop in the terminal)

If you don't know what to do with the commands above, you may press CTRL+ALT+T and then type the command(Or paste with right-click>PASTE as Terminal uses Ctrl+V for something else)

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