Me too. Xubuntu 18.04, fresh install. It happens after resume from suspend and when I switch users (dm-tool switch-to-greeter). For the first user the resolution is correct:
user_a$ inxi -G Graphics: Card: NVIDIA GT215M [GeForce GT 335M] Display Server: x11 (X.Org 1.19.6 ) driver: nvidia Resolution: 1600x900@59.98hz OpenGL: renderer: GeForce GT 335M/PCIe/SSE2 version: 3.3.0 NVIDIA 340.106 user_a$ xrandr --query Screen 0: minimum 8 x 8, current 1600 x 900, maximum 8192 x 8192 VGA-0 disconnected (normal left inverted right x axis y axis) LVDS-0 connected 1600x900+0+0 (normal left inverted right x axis y axis) 345mm x 194mm 1600x900 59.98*+ HDMI-0 disconnected (normal left inverted right x axis y axis) But for the second user: user_b$ inxi -G Graphics: Card: NVIDIA GT215M [GeForce GT 335M] Display Server: x11 (X.Org 1.19.6 ) driver: nvidia Resolution: 640x480@73.00hz OpenGL: renderer: N/A version: N/A user_b$ xrandr --query xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480 default connected 640x480+0+0 0mm x 0mm 640x480 73.00* Note: user_b screen resolution is fine if he is the only one using the system. The problem happens only when he is the second. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1760068 Title: Wrong resolution at unlock screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/light-locker/+bug/1760068/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs