Fedora 16 dual monitor - dual head - automatic monitor shutdown

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http://www.unix.com – Hi, I am experiencing troubles with dual monitors in fedora 16. During boot time both monitors are working, but when system starts one monitor automatically shut down. It happend out of the blue. Some time before when I updated system this happend but then I booted older kernel release and everything was fine, now this did not helps. When it used to work it looked like this: Code:     [marek@dev etc]$ xrandr     Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192     VGA1 connected 1280x1024+1280+0 (normal left inverted right x axis (HowTos)