Problem still exists with 450 drivers on Ubuntu 20.04.1.
Linux bdp 5.4.0-49-generic #53-Ubuntu SMP Fri Sep 18 09:54:57 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
TU117GLM [Quadro T1000 Mobile]
450.66-0ubuntu0.20.04.1
eDP-1-1 connected (normal left inverted right x axis y axis)
PRIME Synchronization: 0
DP-1-1 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-2 connected primary 2560x1440+0+0 (0x29e) normal (normal left inverted right x axis y axis) 597mm x 336mm
PRIME Synchronization: 0
DP-1-3 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-1 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-2 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-3 connected 1080x1920+2560+0 (0x29f) left (normal left inverted right x axis y axis) 527mm x 296mm
PRIME Synchronization: 0
Problem still exists with 450 drivers on Ubuntu 20.04.1.
Linux bdp 5.4.0-49-generic #53-Ubuntu SMP Fri Sep 18 09:54:57 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux 0ubuntu0. 20.04.1
TU117GLM [Quadro T1000 Mobile]
450.66-
eDP-1-1 connected (normal left inverted right x axis y axis)
PRIME Synchronization: 0
DP-1-1 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-2 connected primary 2560x1440+0+0 (0x29e) normal (normal left inverted right x axis y axis) 597mm x 336mm
PRIME Synchronization: 0
DP-1-3 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-1 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-2 disconnected (normal left inverted right x axis y axis)
PRIME Synchronization: 1
DP-1-1-3 connected 1080x1920+2560+0 (0x29f) left (normal left inverted right x axis y axis) 527mm x 296mm
PRIME Synchronization: 0