Comment 9 for bug 1801359

I managed to reproduce this on a Precision 5520 with Bionic, kernel 5.0.0-23.24~18.04.1-generic:

/usr/lib/gdm3/gdm-x-session[1349]: (EE) modeset(0): failed to set mode: Invalid argument
/usr/lib/gdm3/gdm-x-session[1349]: (EE) modeset(0): failed to set mode: Invalid argument
org.gnome.Shell.desktop[1497]: X Error of failed request: BadValue (integer parameter out of range for operation)
org.gnome.Shell.desktop[1497]: Major opcode of failed request: 140 (RANDR)
org.gnome.Shell.desktop[1497]: Minor opcode of failed request: 7 (RRSetScreenSize)
org.gnome.Shell.desktop[1497]: Value in failed request: 0x2580
org.gnome.Shell.desktop[1497]: Serial number of failed request: 415
org.gnome.Shell.desktop[1497]: Current serial number in output stream: 417
gnome-session[1361]: gnome-session-binary[1361]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
gnome-session-binary[1361]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1

So it seems gnome-shell tries to set an invalid value for RRSetScreenSize, and that failed unexpectedly.