display - Video not shown on HDMI screen

07
2014-07
  • user326363

    When I connect HDMI cable from PC to HD TV, it duplicates everything on my PC screen to TV, except "video". When I play video, the video will be shown normally on PC screen but shown as blank screen (black color) on my TV while the sound of video still comes out from TV.

    I have tried all media players (Windows Media Player, Real Player, GOM Player, etc.) but all results the same; blank screen.

    I'm using Windows XP

    What should I do.

    • Answers
  • jpfx1342

    Your video player is using hardware video acceleration. Under this mode, most video cards can only draw to one screen at a time. When you're sharing screens between the PC and TV, your video card has to pick one to draw to, and just picks the first one.

    If you configure your display settings for multiple-desktops, you should be able to drag the video player to the TV's screen. At this point, the video card won't need to draw the video to the PC's screen, and should draw it on the TV instead.

    I don't know of any way to fix this besides that. It's a limitation of your video card. (And a pretty common one at that.) Theoretically, disabling hardware acceleration could fix the issue, but you really don't want to do that.


    • Related Question

    display - HDMI video dropping out
  • TrueWill

    I recently purchased a new computer and a new flat-panel monitor from Dell. Everything worked perfectly if I used the supplied analog monitor cable. Since both the monitor and the graphics card supported HDMI, I purchased a 6' Dynex HDMI cable and connected that (disconnecting the analog cable, and with the system turned off).

    Everything worked fine at first - it auto-detected the change. After a few minutes I noticed the screen would go black for a second or so, then come back on. These dropouts kept happening. Reconnecting and rebooting made no difference. I switched back to analog, and it's been working perfectly.

    What are the most likely causes of this, and how can I diagnose the problem?

    Details:

    • Display adapter: ATI Radeon HD 3450 256MB
    • Monitor: Dell ST2210 Widescreen Flat Panel (1920 x 1080)
    • Cable: Dynex (Best Buy) 6 foot HDMI digital A/V
    • Computer: Dell Inspiron, Intel Core 2 Duo
    • OS: Windows 7 Ultimate 64-bit

    • Related Answers
  • harrymc

    The problem can be hardware, software or firmware. Too many causes are possible to analyze it like that.

    Try to ensure that you have the latest drivers from the Dell support site. You may also try another HDMI cable, just in case.

    But if the problem persists, and since this is a new computer, you're entitled to ask Dell Support for a solution.

  • MDMarra

    It could be a driver issue. There have been a lot of flakey HDMI issues with older drivers. Try getting the latest direct from ATI.com