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Installing Mobility Radeon HD 3470 on ThinkPad, Flickering, BlackOuts

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http://forums.fedoraforum.org – Hi I really need help I can't determine if my graphics card is defect! I have just set up Fedora 12 on a month old Lenovo Thinkpad with Integrated Intel Graphics and a ATI Mobility Radeon HD 3470. I have NOT installed any third party drivers or any proprietary drivers. Its a totally clean system (single boot, formated discs). The Problem: I started the LiveCD with Discrete Graphics (changed in BIOS) and the screen was full of small lines running from left to right with a random flickering. In Bios i changed to switchable graphics and OS Detection for Switchable Graphics Enabled. Then there were no flickering problems during install. After installation I recognized that Fedora is using the internal Intel Graphics. Compiz even works with it. But I don't know what to do to get the Radeon Card to work. When changing back to Discrete Graphics in BIOS Fedora boots to a black screen with no response on keys or mouse. Before installing a clean system I tried the proprietary driver from ati (catalyst, fglrx) and even created a xorg.conf to force to use it. This resulted in a black boot, too. So is it possible that my Radeon card is defect or is ther an other way to get it to run? A good start would be a link to a program that checks graphic cards. Please help me get it run! Thanks! (HowTos)

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Submitted by dalinux on 11/30/2009 – Made popular on 11/30/2009

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