i have a fresh install of Ubuntu 15.10, with a dual monitor setup on a Nvidia GT620. Both monitors are Samsung SyncMaster S23B350, left monitor is with on a VGA to DVI adapter, and the right monitor is in the VGA output.
The left monitor resolution is 1920x1080_60.00, but the image is stretched, see the image.
Xrandr output is
cristian@cristian-desktop:~/.config$ xrandr Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192 DVI-I-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.00 800x600 60.32 56.25 848x480 60.00 640x480 59.94 1920x1080_60.00 59.96* 1920x1360_60.00 59.96 HDMI-1 disconnected (normal left inverted right x axis y axis) VGA-1 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 287mm 1920x1080 60.00*+ 1680x1050 59.95 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.89 1280x800 59.81 1152x864 75.00 1280x720 60.00 1024x768 75.08 70.07 60.00 832x624 74.55 800x600 72.19 75.00 60.32 56.25 640x480 75.00 72.81 66.67 60.00 720x400 70.08
I try to fix this using the built in monitor settings, but i can't adjust the widht or the height of the image.