10-12-2013 05:14 AM
10-13-2013 01:06 PM
If I do not use the Win-P or Ctrl-F7 key combination to change it to Duplicate Screen, then it may go automatically to "Second Screen only" which seems to be occurring in your situation.
If the setting wont change after the screen goes blank, then it could b a driver issue. If you opted the latest device driver like I did, and this still happens, I'd say it is a driver issue. However, when I made a presentation to day, it automatically switch to the proper "Duplicate setting" screen option. So perhaps yours is an intermittent problem.
Go to control Panel, Power Options, then Click on Windows Mobility Center at the bottom of the page. You will displays and toggles for External displays and for presenter mode right there. Click those to see if you get any changes. You can see if your computer thinks a second screen is attached or not, and it you are in projection mode or not.
Does the computer go back to normal after disengaging the HDMI? If so, set it to duplicate screens and then re-connect it, if the screen goes dark there must be another setting that is off.
If you are using the WiDi software that might also be the culprit, check those settings. Hope this helps in some way.
I discovered on mine that I could run a Powerpoint presentation fine, but when I try to switch over into presenting a movie clip or website, it would only show my screen saver. I still needed to use the Win-P or Cntrl-F7 key toggle to send the signal for those applications. Just seems weird, it just an idiosyncrasy I gather.
10-13-2013 01:32 PM
10-13-2013 01:35 PM
And you are sure it is not a setting on the TV? if the computer is correct, sending the correct setting, and the audio is working, it could be a TV issue, unless it worked well before and now has stopped. But if never worked before I'd say you need to change from analog to digital or from digital to analog to see which one works. I had to do that on my tv.
11-12-2013 05:27 AM
I have the same problem. When screen comes back up using the display port connection to an HP 2159 monitor it's black but I can see a small margin around the edges so I know the port is working.