ACER NITRO 515-54 HDMI Display Doesn't work in Ubuntu 18.04

System

This discussion was created from comments split from: ACER NITRO 515-53 HDMI Display Doesn't work in Ubuntu 19.04.

KyololoQ

Hello!
I have the same, exact problem as ROG3BOT, thus I won't open a different topic.
The only difference is that I'm using Ubuntu 18.04 and that I have an Acer Nitro 515-54.
My xrandr output is almost the same as his one (I'm pasting it at the end) and I have already tried changing cables, switching between GPU etc.
I have executed xrandr --auto but nothing seems to be happened.
Any other tips or ideas on what to do?

Thanks

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080     60.03*+  60.01    59.97    59.96    59.93 
   1680x1050     59.95    59.88 
   1600x1024     60.17 
   1400x1050     59.98 
   1600x900      59.99    59.94    59.95    59.82 
   1280x1024     60.02 
   1440x900      59.89 
   1400x900      59.96    59.88 
   1280x960      60.00 
   1440x810      60.00    59.97 
   1368x768      59.88    59.85 
   1360x768      59.80    59.96 
   1280x800      59.99    59.97    59.81    59.91 
   1152x864      60.00 
   1280x720      60.00    59.99    59.86    59.74 
   1024x768      60.04    60.00 
   960x720       60.00 
   928x696       60.05 
   896x672       60.01 
   1024x576      59.95    59.96    59.90    59.82 
   960x600       59.93    60.00 
   960x540       59.96    59.99    59.63    59.82 
   800x600       60.00    60.32    56.25 
   840x525       60.01    59.88 
   864x486       59.92    59.57 
   800x512       60.17 
   700x525       59.98 
   800x450       59.95    59.82 
   640x512       60.02 
   720x450       59.89 
   700x450       59.96    59.88 
   640x480       60.00    59.94 
   720x405       59.51    58.99 
   684x384       59.88    59.85 
   680x384       59.80    59.96 
   640x400       59.88    59.98 
   576x432       60.06 
   640x360       59.86    59.83    59.84    59.32 
   512x384       60.00 
   512x288       60.00    59.92 
   480x270       59.63    59.82 
   400x300       60.32    56.34 
   432x243       59.92    59.57 
   320x240       60.05 
   360x202       59.51    59.13 
   320x180       59.84    59.32