The day before yesterday I bought 2M Sm@rtCom HDMI cable and succeeded duplicating laptop's screen to LG HDTV. Yesterday I tried again but this time the option for duplicating screen did not show up and I could only extend the screen:
I tried playing with resolutions, connecting to HDTV and then starting laptop, switching between HDMI cable's ends - all to no avail. The option disappeared. There was another option but it made 1|2 multiple screens in my laptop's screen to appear and nothing on HDTV.
UPDATE: It seems that do not have option to duplicate at all. Today I connected again but to different HDMI slot and screen appeared successfully on both laptop and HDTV:
However when I clicked on "Identify", both HDTV and laptop showed number 1. Shouldn't it be number 1 and 2?
I cannot change resolution by the way since the laptop's 1366x768 screen is cloned so it is a little wider than HDTV can handle, but still viewable. HDTV can handle a maximum 1360x768 but not 6 additional pixels. It can handle Full HD however.
It seems that Intel HD Graphics outputs HDMI while nVidia outputs VGA.
- DELL Latitude E6420
- Intel HD Graphics with nVidia NVS 4200M
- Windows 7 Enterprise