Translations:Nouveau/27/en
From Gentoo Wiki
When the screen freezes often with possible EDID probes while using dual monitors/displays, try adding video=VGA-1:e or video=VGA-1:d (enable or disable respectively) to the GRUB_CMDLINE_LINUX_DEFAULT variable in the /etc/default/grub file for GRUB or the respective kernel command-line option for other loaders. Make sure to substitute the name of the monitor listed within dmesg or /var/log/Xorg.0.log (i.e. CRT-1, VGA-1, LVDS-1, DVI-1, ...)