HDMI1 is disconnected

I'm trying to get a secondary monitor working with my laptop. I'm running Ubuntu 16.04 LTS. I have Windows 10 installed on the same laptop and it works in Windows 10. Currently xrandr -q outputs:

Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
eDP1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
   1600x900      60.08*+
   1440x900      59.89  
   1368x768      60.00  
   1360x768      59.80    59.96  
   1152x864      60.00  
   1280x720      60.00  
   1024x768      60.00  
   1024x576      60.00  
   960x540       60.00  
   800x600       60.32    56.25  
   864x486       60.00  
   800x450       60.00  
   640x480       59.94  
   720x405       60.00  
   640x360       60.00  
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

I don't see anything that stands out in dmesg and /var/log/Xorg.0.log doesn't log anything when I plug in the HDMI chord.

According to lspci -v I have this for my graphics card:

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) (prog-if 00 [VGA controller])
        Subsystem: Toshiba America Info Systems Haswell-ULT Integrated Graphics Controller
        Flags: bus master, fast devsel, latency 0, IRQ 48
        Memory at a0000000 (64-bit, non-prefetchable) [size=4M]
        Memory at 90000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 5000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

I installed xserver-xorg-video-intel and libdrm-intel1.

I've also tried

xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
xrandr --addmode HDMI1 1920x1080_60.00
xrandr --output HDMI1 --mode 1920x1080_60.00

And then on the last command I get xrandr: Configure crtc 1 failed.

xrandr --output HDMI1 --auto doesn't do anything.

Anyone recommend anything or trying anything? When I plug in the HDMI chord the monitor's power light turns blue, then a few seconds later it says "No signal detected." So it at least knows it's plugged in, but like the laptop is not listening there.

Solution 1:

Solved, I just had to run this:

xrandr --output HDMI-1 --auto --right-of eDP1

Solution 2:

I've had the same problem on my Dell G3, running Kubuntu 20.04 with a NVidia GeForce GTX 1050 Ti.

xrandr -q

showed "HDMI-1 disconnected"

What I had to do was uninstall all nvidia drivers, using:

sudo apt remove --purge '^nvidia-.*'

Then, after restarting, I installed the latest nvidia driver, which at the time was:

sudo apt install nvidia-driver-470

Then everything went back to normal. Hope it helps.