[Nouveau] Multicard problem on NV50

[support.intranet]

Hi everyone. I'm trying nouveau on my dual 285GTX setup. The first card works fine, fast and smooth. But starting everything more than basic icewm (and sometimes even it doesn't work) on the second one either freezes the system or restarts xorg.
I'm attaching dmesg, Xorg.0.log and xorg.conf
Thanks for any help
Alberto Mattea
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