Comment 3 for bug 1358366

Confirm affected by this bug. Previously, I had Ubuntu 16.04 installed although,
with Ubuntu I don't see this bug.

see: screenshot.png

Laptop display: 1366x768(16:9)
External monitor (HDMI): 1920x1280(16:9)

xrandr | fgrep '*'
   1366x768 60.00*+ 48.00
   1920x1080 60.00*+ 50.00 59.94

Graphic controller:
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
 DeviceName: Onboard IGD
 Subsystem: Dell Broadwell-U Integrated Graphics [1028:062e]
 Flags: bus master, fast devsel, latency 0, IRQ 48
 Memory at f6000000 (64-bit, non-prefetchable) [size=16M]
 Memory at e0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at f000 [size=64]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915

00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 09)

System Information
 Manufacturer: Dell Inc.
 Product Name: Latitude E7450
 Version: Not Specified
 Wake-up Type: Power Switch
 Family: Not Specified