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black screen with installation ACER 4736Z

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linux-howto

http://askubuntu.com – I presently work with 10.04 on my acer 4736z. i tried upgrading to 11.04, the installation was sucessful, but there was some problem such that the screen remaind dark. i noticed the sucessful installation because i could see the opening screen at cetain angles in bright light, however the overall appearance of the screen aws dark. ultimately i had to reinstall 10.04. Now, i want to now upgrade to 12.04 lts, but i remain apprehensive. any suggestions. (HowTos)