~$ inxi -G
Graphics:  Device-1: NVIDIA GP104 [GeForce GTX 1070] driver: nvidia v: 415.27 
           Display: x11 server: X.Org 1.20.3 driver: nvidia resolution: 
2560x1440~60Hz 
           OpenGL: renderer: GeForce GTX 1070/PCIe/SSE2 v: 4.6.0 NVIDIA 415.27

~$ xrandr --query
Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y 
axis) 600mm x 340mm
   3840x2160     30.00 +  29.97    25.00    23.98  
   2560x1440     59.95* 
   1920x1080     60.00    59.94    29.97    60.00  
   1600x900      60.00  
   1280x1024     60.02  
   1280x800      59.81  
   1280x720      60.00    59.94  
   1152x864      60.00  
   1024x768      60.00  
   800x600       60.32  
   720x480       59.94  
   640x480       59.94    59.93  
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-340 in Ubuntu.
https://bugs.launchpad.net/bugs/1760068

Title:
  Wrong resolution at unlock screen

Status in light-locker package in Ubuntu:
  Invalid
Status in nvidia-graphics-drivers-340 package in Ubuntu:
  Confirmed

Bug description:
  After coming out of suspend - the unlock screen is at 640x480
  resolution.

  Expect to see unlock screen at 1920x1080 resolution.

  Using nvidia-340.

  Previously tested using nouveau driver where resolution at unlock
  screen was correct.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: light-locker 1.8.0-1ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Fri Mar 30 11:31:20 2018
  InstallationDate: Installed on 2017-09-02 (209 days ago)
  InstallationMedia: Xubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170902)
  SourcePackage: light-locker
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/light-locker/+bug/1760068/+subscriptions

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