Any help would be appreciated. I've looked over similar threads and have tried restarts and installing lightdm, but haven't had any success. I'm trying to use a second monitor through my laptop's single HDMI port and it worked yesterday before updating to 18.04.1, but now it isn't being detected. This is for a Toshiba Satellite, I don't know the exact model it's a couple years old the sticker with that info has rubbed off.

I have tried it with a second monitor and a different cable as well.

The xrandr output is:

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 eDP-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 174mm 1366x768 60.00*+ 1360x768 59.80 59.96 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

and in the display settings there is only my laptop's screen...