I have noticed that everytime I lock desktop resolution of lock screen change to I guess 800 something while my resolution of desktop is 1920x900.
Same problem here I've got 2 monitors (Samsung, 2048x1152, primary; LG, 1680x1050). After (re)boot: the resolution on the primary screen is correct. After login: on lock screen, the resolution changes to 1280x1024.
here my xrandr-infos from lock screen:
Screen 0: minimum 1280 x 1024, current 1280 x 1024, maximum 1280 x 1024 default connected 1280x1024+0+0 0mm x 0mm 1280x1024 77.00*
After unlock screen the resolution changes back to the correct values. But sometimes my desktop is pixelated.
I already tried to create a script like here: Pantheon-greeter login screen has incorrect resolution on external monitor
But it does'nt work.
Any other ideas?
Update: I've got this issue after install nvidia driver 340.108