I can confirm needing the 20-nouveau.conf file. Without it vesa gets loaded. --Karper 12:10, 17 January 2011 (EST)
I cannot confirm needing a 20-nouveau.conf anymore, nouveau seems to get autodetected. Maybe this section can be removed? --Litemotiv 14:00, 17 October 2010 (EDT)
Adding "options nouveau modeset=1" to /etc/modprobe.d/modprobe.conf was mentioned in a few places in the forums but is absent from this wiki page. I've included here as well. --Vinhsynd 17:09, 23 December 2010 (CDT)
case: lib32-nvidia-utils installed
add this case. i've removed also lib32-nvidia-utils before installing nouveau and after nouveau installation i installed also lib32-nouveau-dri this should solve any problem!