How to improve reliability when connecting Gateway M-1618 laptop with a Pioneer KRP-500M TV using HDMI?

Problem is that HDMI connection dissappears every minute or so for about 1-2 seconds. That is TV goes blank. This happens when using resolution native to laptop 1280x800.

What I have tried:

  • switched HDMI cable (no improvement)
  • tried both HDMI connections on TV (no improvement)
  • switched display mode to HDMI out only (blank laptop screen) unsure if this helped
  • changed display resolution to 800x600 (this seems to help, but is not optimal!)

Specs: Laptop Gateway M1618:

  • graphics ATI Radeon X1270 256MB hypermemory
  • native resolution 1280x800 (WXGA)
  • HDMI 1.2


  • Technology TFT active matrix
  • Resolution 1920 x 1080
  • Display Format 1080p (FullHD)
  • 2 HDMI connections (19 pin Type A) unsure what standard it supports

My theory is that something can't handle larger data streams that 1280x800 provide (as opposed to 800x600), or there is some sync problem. TV plays Blue Ray fine, so the problem more likely is with laptop.

Hoping someone more experienced with HDMI can provide some ideas to try.

  • 1
    It could be that your TV can't support 1280X800 try 1280X720 and see if it continues this behavior. – Not Kyle stop stalking me Feb 18 '11 at 15:52

Looks like in the specs for the TV it will handle 1080p which is 1920*1080 progressive; your notebook video card should support this output with it's drivers especially if you are using an HDMI cable; I would force this display setting and check it out.

Also do you have actual HDMI output from your card or are you using DVI-I as most cards have not not the DVI-D (which is true HD ie HDMI=DVI-D)

If you have a DVI-I and using an adapter to HDMI then you loose quality but you can use an adapter from DVI-D (dual link) to HDMI with same-same compatibility

If you are using HDMI output dirrectly than there is no worry; just check the above.

Hope that helps!


Have you updated your video driver on the laptop?



"Hypermemory" is shared main memory, be sure it is set to use all 256mb of shared memory.

Some systems you can change this shared setting some you cannot, check the bios and video properties.

You may have to change the hertz setting (refresh rate) in video properties when connected to the TV.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.