with just one gpu my system is running perfect but if i enable multigpu in xorg.conf the system crashes after short time. most time it happens when 3D applications are started like glxgears or beryl.
to ensure that my gentoo isn't the problem i started an ubuntu live system from cd and installed the nvidia driver. same problem here. i tried 9631 and 9755.
kernel parameter pci=nommconf and idle=poll were no solution.
athlon 64 4400+
asus a8n-e with nforce 4 ultra
Leadtek WinFast PX7950 GX2 TDH