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Screen rendering problems after upgrading to 12.10

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http://askubuntu.com – Since upgrading to Ubuntu 12.10 I'm suffering severe rendering issues in unity: Some parts of any application (for instance Firefox, or emacs, etc) are blank, or are not rendered, or are blinking. Some fonts in an application are not correct rendered, maybe only some part (see Eclipse screenshot). There is some shadows in desktop background. It's something that occurs from time to time (it's works great for hours and suddenly start to give this rendering problems). I was trying to find a bug in launchpad but without success. My card (using i915 module): 00:02.0 VGA compatible controller (HowTos)

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Submitted by missing on 11/07/2012

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Hi Ubuntu Community,

I have just installed a fresh Ubuntu 12.04, after 2 years of Ubuntu 10.04. My main problem is about font rendering in Firefox (and also Thunderbird).