Another 2year old machine using GeForce G114 chipset
Looks like Xorg is unable to load the nv driver, claims is not present but I can confirm xf86-video-nv extension is installed. The NOUVEAU driver does not support this 2 year old video chip. It appears as if the Vesa driver is in use on this pc. While 1920x1200 is not set as default on another monitor, the default resolution in use is 1280x1024 which is perfectly useable.
from the Xorg.0.log attached below I notice nv driver is not usable
[ 14.821] (II) LoadModule: "glx"
[ 14.821] (II) Loading /usr/local/lib/xorg/modules/extensions/libglx.so
[ 14.839] (II) Module glx: vendor="X.Org Foundation"
[ 14.839] compiled for 1.14.2, module version = 1.0.0
[ 14.839] ABI class: X.Org Server Extension, version 7.0
[ 14.839] (==) AIGLX enabled
[ 14.839] Loading extension GLX
[ 14.839] (==) Matched nouveau as autoconfigured driver 0
[ 14.839] (==) Matched nv as autoconfigured driver 1
[ 14.839] (==) Matched vesa as autoconfigured driver 2
[ 14.839] (==) Matched modesetting as autoconfigured driver 3
[ 14.839] (==) Matched fbdev as autoconfigured driver 4
[ 14.839] (==) Assigned the driver to the xf86ConfigLayout
[ 14.839] (II) LoadModule: "nouveau"
[ 14.839] (II) Loading /usr/local/lib/xorg/modules/drivers/nouveau_drv.so
[ 14.846] (II) Module nouveau: vendor="X.Org Foundation"
[ 14.846] compiled for 1.14.2, module version = 1.0.7
[ 14.846] Module class: X.Org Video Driver
[ 14.846] ABI class: X.Org Video Driver, version 14.1
[ 14.846] (II) LoadModule: "nv"
[ 14.847] (WW) Warning, couldn't open module nv
[ 14.847] (II) UnloadModule: "nv"
[ 14.847] (II) Unloading nv
[ 14.847] (EE) Failed to load module "nv" (module does not exist, 0)
[ 14.847] (II) LoadModule: "vesa"
[ 14.847] (II) Loading /usr/local/lib/xorg/modules/drivers/vesa_drv.so
[ 14.847] (II) Module vesa: vendor="X.Org Foundation"
[ 14.847] compiled for 1.14.2, module version = 2.3.2
[ 14.847] Module class: X.Org Video Driver
[ 14.847] ABI class: X.Org Video Driver, version 14.1
[ 14.847] (II) LoadModule: "modesetting"
[ 14.847] (WW) Warning, couldn't open module modesetting
[ 14.847] (II) UnloadModule: "modesetting"
[ 14.847] (II) Unloading modesetting
[ 14.847] (EE) Failed to load module "modesetting" (module does not exist, 0)
[ 14.847] (II) LoadModule: "fbdev"
[ 14.847] (II) Loading /usr/local/lib/xorg/modules/drivers/fbdev_drv.so
[ 14.848] (II) Module fbdev: vendor="X.Org Foundation"
[ 14.848] compiled for 1.14.2, module version = 0.4.3
[ 14.848] Module class: X.Org Video Driver
[ 14.848] ABI class: X.Org Video Driver, version 14.1
currently installed onboot extensions
Xorg-7.7-3d
xf86-input-synaptics
xf86-video-nouveau
xf86-video-nv