On Linux Mint latest version 3rd monitor is recognized but not displaying on high resolution. Only 800x600 is displaying, but the monitor+VGA card support up to 1920x1080.
Connectivity: Minidisplay port
OS: Mint 18.3
64bit , latest updates.
Laptop: DELL Latitude E7440
inxi -Fxz output:
Card: Intel Haswell-ULT Integrated Graphics Controller
Display Server: [url removed, login to view] 1.18.4 drivers: intel (unloaded: fbdev,vesa)
Resolution: 1368x768 [url removed, login to view], 800x600 [url removed, login to view], 1920x1080 [url removed, login to view]
GLX Renderer: Mesa DRI Intel Haswell Mobile
GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
I tried manually adding 1920x1080 via the 'xrandr' command, but didn't work.
I believe there is either an issue with my Intel graphic card or the within the laptop itself.
I have also tested this with other monitors and other display port cables.