My new Dell 2009W detects "no digital input signal" when connected on DVI connector through a DVI (Single Link) cable + DVI->displayport adapter hooked to Compaq 6000 Pro Displayport connector. The monitor works fine only when connected with a VGA cable. I upgraded the Intel video driver to the latest version (6.14.10.5420) with no success. Displayport/DVI adapter is original HP P/N 481409-002 Rev.F and looks as a passive unit. Do I need an active adapter? Thanks for help
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