I use Solus with Budgie as desktop manager. I tried the command you postet, but it did not work. I got no error message, but the monitor is still not working.
I think it may be a problem with xorg. At least this is what i have found in /var/log/Xorg.0.log:
[ 4.359] (II) intel(0): Output HDMI1 has no monitor section
[ 4.359] (II) intel(0): Enabled output HDMI1
[ 4.540] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event9)
[ 4.540] (II) No input driver specified, ignoring this device.
[ 4.540] (II) This device may have been added with another device file.
[ 4.540] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=7 (/dev/input/event11)
[ 4.540] (II) No input driver specified, ignoring this device.
[ 4.540] (II) This device may have been added with another device file.
[ 4.542] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=8 (/dev/input/event12)
[ 4.542] (II) No input driver specified, ignoring this device.
[ 4.542] (II) This device may have been added with another device file.
[ 4.542] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=9 (/dev/input/event13)
[ 4.542] (II) No input driver specified, ignoring this device.
[ 4.542] (II) This device may have been added with another device file.
[ 4.544] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=10 (/dev/input/event14)
[ 4.544] (II) No input driver specified, ignoring this device.
[ 4.641] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event19)
[ 4.641] (II) No input driver specified, ignoring this device.
[ 4.641] (II) This device may have been added with another device file.
[ 4.642] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event20)
[ 4.642] (II) No input driver specified, ignoring this device.
[ 4.642] (II) This device may have been added with another device file.
[ 4.643] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event21)
[ 4.644] (II) No input driver specified, ignoring this device.
[ 4.644] (II) This device may have been added with another device file.
[ 4.645] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event22)
[ 4.645] (II) No input driver specified, ignoring this device.
[ 4.645] (II) This device may have been added with another device file.
[ 4.646] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event23)
[ 4.646] (II) No input driver specified, ignoring this device.