I have a multiple monitor setup with two screens. The login screen uses dual monitor mode (as seen on the first picture), but the lock screen (CTRL + ALT + L) uses only a single monitor and disables the other (as in the second image). Is there a way to change that? I want the lock screen to extend to both monitors, if possible.
My OS is Ubuntu 12.04. Video card is "NVIDIA Corporation G98 [GeForce 8400 GS] (rev a1)", and System Settings tab "Details" shows "Driver" as "unknown".
Login screen using multi monitor mode:
Lock screen using only a single monitor: