I'm unable to get Ubuntu to detect my second monitor, which is connected via HDMI. I'm running Ubuntu 18.04.2 on Lenovo Legion Y730 with a Nvidia GeForce GTX 1050 Ti graphics card (and some Intel integrated one, too). I always have to select "Ubuntu on Wayland" on login, as if I just select "Ubuntu", I'm stuck in the login loop, which doesn't allow me to proceed past the login screen.
To address the above issues, I've tried multiple things: I've tried to install the nvidia drivers, but this only lead into this problem. With nouveau drivers, I can at least boot and log in, if I select "Ubuntu on Wayland".
Below is the output of lshw -c video, if that would be helpful
*-display UNCLAIMED
description: 3D controller
product: GP107M [GeForce GTX 1050 Ti Mobile]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:62000000-62ffffff memory:50000000-5fffffff memory:60000000-61ffffff ioport:4000(size=128) memory:63000000-6307ffff
*-display
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 mode=1920x1080 visual=truecolor xres=1920 yres=1080
resources: iomemory:600-5ff iomemory:400-3ff irq:130 memory:6022000000-6022ffffff memory:4000000000-400fffffff ioport:5000(size=64) memory:c0000-dffff
