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  HDMI Overscan Problem, Any Solution? 
 
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Dr. Peaceful Dec 29, 2010, 02:24pm EST Reply - Quote - Report Abuse
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I've helped upgrading 3 computers for my relatives over this holiday period. My vacation... more like family IT support. LOL ;) All 3 computers are connected to HD TVs via HDMI cables. It happens that all 3 are using nVidia video cards and all have Win7. One of them I've got lucky, I've found a resolution that fit the screen perfectly.

For the other two of them, I've exhausted all resolution possibilities, and none can fit the TV screen. No matter what resolution I've selected, the edge of the desktop (including the Start bar below) are outside the screen! So I've searched around the net for solutions, found out it's called the HDMI overscan problem. Many people out there are experiencing the same problem with different TVs and video cards. It's more to do with the TV, than is with the video card settings.

I've found two solutions so far. Solution one is to find a setting in the TV to adjust it. Unfortunately both of the TVs I have problem with, do Not have any settings in their menu to adjust it. Solution two is to use the nVidia control panel's "Adjust screen size and position" option. Again, I am out of luck for that one. Once I've changed from "Use the display's build-in scaling" to "Use NVIDIA scaling" and hit apply, it automatically change back to "Use the display's build-in scaling"! So I have no way to adjust screen size with the video driver.

So I am clueless what else I can do now. Anyone got other solutions? Anyone experience the same problem here, by the way?


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G. G. Dec 29, 2010, 03:04pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Hey....... I think this would be a great time and excuse for a TV upgrade to one that works with the computer. :P

Actually..... not sure what it could be since I havent connect a computer HDMI to a tv yet. :(

Oh.... by the way.... are these computers laptop or desktop...... and are you using one of those adapters to covert DVI to HDMI ??? If you are using a adapter/connector to convert from one format over to the other..... you may want to try a cable that has HDMI on one end and the other on the other end without the adapter... I had a situation on my ATI card that I was using a DVI to HDMI adapter and after about a month later of using..... I had issues with the monitor... I got one of these cables that has DVI on one end and HDMI on the other and my issues with the monitor went away. Maybe there is something that is lost by using the adapter if you are using one...



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john albrich Dec 29, 2010, 08:15pm EST Reply - Quote - Report Abuse
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Edited: Dec 29, 2010, 08:25pm EST

 
>> Re: HDMI Overscan Problem, Any Solution?
G. G. said:
...If you are using a adapter/connector to convert from one format over to the other..... you may want to try a cable that has HDMI on one end and the other on the other end without the adapter... I had a situation on my ATI card that I was using a DVI to HDMI adapter and after about a month later of using..... I had issues with the monitor... I got one of these cables that has DVI on one end and HDMI on the other and my issues with the monitor went away. Maybe there is something that is lost by using the adapter if you are using one..


That's interesting to know. AFAIK there is no circuitry between the pins of the DVI and the HDMI whether you are using an DVI2HDMI adapter or a cable. It's just a wiring transition...like converting between US and European AC plugs.

There are a couple of pins that are not necessarily connected through, but in practical application that shouldn't affect the video output result as the transition wiring is the same whether you use an "adapter" or a "cable". The only place where you should see a difference is in HDCP support implementation...and that depends on the video card's DVI support...not the connector itself. See http://www.hardwaresecrets.com/article/283/3


edit to add:
That suggests to me G.G.'s experience was due to a specific manufacturer's adapter...perhaps one that saved a penny or two by skimping somewhere. A different manufacturer's adapter might provide the same results as the cable.

With the mulltiple and STILL changing standards on HDMI, it's always a good idea to try different interconnections (adapters/cables) when you run into what seem to be compatibility issues. In some cases it might be a difference resolved by using a $15 cable instead of a $4 cable, or an adapter from company X instead of one from company Y.

Dr. Peaceful Dec 29, 2010, 09:19pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
G. G. said:
Hey....... I think this would be a great time and excuse for a TV upgrade to one that works with the computer. :P
...
Oh.... by the way.... are these computers laptop or desktop...... and are you using one of those adapters to covert DVI to HDMI ???
...

LOL G.G... TV upgrade is not an option. My relatives are relatively thrifty in nature. ;) Not to mention, how do one know if the new TV will support HDMI better than the old one...

The computers are: 2 desktops (nettops more precisely) and 1 laptop. 1 of the desktops work fine with its TV. The remaining desktop and laptop have difficulty fitting their TVs. All are using pure HDMI cables (from the PC's HDMI port to the HDMI port in the TV). So no converter problem here.

G. G. Dec 29, 2010, 09:37pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Peace,

have you tried taking the working desktop/nettop and seeing if it will work with the other two TV that have the issue? This could help giving you direction if it is the computer hardware or in the TV, besides some configuration on either end.


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John,

Maybe my connector went defective or something. I know there isnt any active components in the adapter... but maybe one of the connection went cold soldered causing some high resistance. I was getting these red horizontal flashing (lightning strke like) lines going from right to left at 1/3 bottom of the screen.

Went to the HP website and search for this particular problem and found a hit about this issue. The resolution was to have the monitor replaced.... before doing that, I figured I try a cable with a HDMI on one end and a DVI on the other end. At least I know I dont have the extra broken connections of the adapter. With the cable, it is a pin for pin run versus connection at both ends of the adapter then the cable.... It eliminates extra connections... The problem went away since I replaced the adapter with the cable. I believe the monitor is out of warranty by now.... oh darn...


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john albrich Dec 29, 2010, 10:04pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
G. G. said:
...Went to the HP website and search for this particular problem and found a hit about this issue. The resolution was to have the monitor replaced....


I always did like those tech support answers that are the equivalent of telling the customer to buy a new car to fix a flat tire. :P

I guess that's another way to redistribute "wealth".

Dr. Peaceful Jan 03, 2011, 06:31pm EST Reply - Quote - Report Abuse
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Edited: Jan 03, 2011, 06:35pm EST

 
>> Re: HDMI Overscan Problem, Any Solution?
LOL on the HP tech comments. ;)

A little bit of update and details here. Here are the setups of the 3 computers / TVs.

PC1: eMachines ER1402 to 42" Philips LCD TV => No problem, able to find right resolution with HDMI.

PC2: eMachines ER1402 to some el cheapo "Wal Mart brand" 19" LCD TV => No resolution found for HDMI; resolved problem by using a VGA cable instead.

PC3: an older HP DV series laptop to 42" Vizio TV => No resolution found for HDMI; VGA port does not give full screen resolution; no TV firmware upgrade; no solution found.

PC1 is identical to PC2 hardware-wise, so interchanging their TV monitors would not make any difference. I've tried PC3 in PC1's monitor (Philips), no problem with HDMI resolution. So it's almost conclusive that it's a TV problem, not computer nor cable problems.

I ended up using a VGA for PC2, the 19" TV is basically a computer monitor anyway. But VGA for PC3 won't work well, the TV can only display it as a small square in the center with two big black strips on the sides. A 42" TV ended up like a 32" TV, LOL. ;)

I've also investigated whether it's possible to upgrade the TV firmware. Brands like Samsung and Philips can easily do a firmware upgrade using the service USB port in the back of the TV and a USB drive. Newer Vizio TVs can do the same, but not this older one here. Plus I've found the following message in the TV's user guide: "Note: The HDMI Input is for HD Video and will only support 640x480 at 60Hz from a PC. Use the RGB PC input for a greater selection of PC formats." That basically says it all. ;)

So, as you can see there're still are a lot of limitation for older TVs using HDMI as display connection to a PC. In this case, the suggestion from G. G. and the HP tech (would they be the same person? ;) ) is, in fact, correct. A replacement of TV is the only solution here.

G. G. Jan 03, 2011, 11:14pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Dr. Peaceful said:
..................... In this case, the suggestion from G. G. and the HP tech (would they be the same person? ;) ) is, in fact, correct. A replacement of TV is the only solution here.



F!@@#$%%$##@!!@#$%^&ck'n HP B@!@###@# S @#$$#@@#$ Ds !!!!!!!

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john albrich Jan 04, 2011, 10:01am EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Dr. Peaceful said:
...
PC2: eMachines ER1402 to some el cheapo "Wal Mart brand" 19" LCD TV => No resolution found for HDMI; resolved problem by using a VGA cable instead.

PC3: an older HP DV series laptop to 42" Vizio TV => No resolution found for HDMI; VGA port does not give full screen resolution; no TV firmware upgrade; no solution found.

PC1 is identical to PC2 hardware-wise, so interchanging their TV monitors would not make any difference. I've tried PC3 in PC1's monitor (Philips), no problem with HDMI resolution. So it's almost conclusive that it's a TV problem, not computer nor cable problems....


It's hard to believe with the display adapter hardware and software available now that it isn't possible to in some way fool the "cheapo" TV into thinking it's seeing a "standard" video signal. It really shouldn't matter whether it comes from a player or from a computer...as long as you can force the right output from a card.

It may simply be that the display adapters you had (whether discrete or integrated) weren't capable of being adjusted to the degree needed to compensate for the "cheapo" TV. A different and even cheap ($15-$30 after sale+rebate) 64bit or 128bit HD4xxx series display adapter might provide the needed flexibility. (I just barely missed out on a ~$25 256bit 1GB XFX (HD45XX?) adapter the other day from a very special Newegg deal (sale+promo+rebate). I was really bummed. It would have been a great gift for my brother-in-law! They sold out in minutes)

Dr. Peaceful Jan 04, 2011, 03:41pm EST Reply - Quote - Report Abuse
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Edited: Jan 04, 2011, 04:19pm EST

 
>> Re: HDMI Overscan Problem, Any Solution?
G.G., sorry dude, didn't mean to bring up your bad feelings about HP. I was joking.

John, it will be great if the video diver / hardware provides those options. Like you said, all it takes for it to work is to fool the TV that it's an HD video from, say a DVD player, and not from a computer. But adding a video card is not an option here, all these are either laptop or small form factor nettops. All use integrated graphics: GeForce 9200 for the nettops; and some older mobile GeForce for the laptop. They are good enough for general purpose, though.


Edit: By the way what's the difference between HDMI signal from a PC to HDMI signal from say a DVD/Bluray player?? I wonder...

G. G. Jan 04, 2011, 06:27pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Dr. Peaceful said:
G.G., sorry dude, didn't mean to bring up your bad feelings about HP. I was joking.

Edit: By the way what's the difference between HDMI signal from a PC to HDMI signal from say a DVD/Bluray player?? I wonder...



One works and the other doesnt....... :P


as for HP... I know you were joking..

Freak'n bastards of a company.....



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mothow Jan 04, 2011, 06:49pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
Hope you figure this out.I tried running my HD TV as a monitor with a HDMI and even though i got a res that worked and fit the whole screen it looked horrible

ASRock Z97 Extreme 4 / i7 4790K / Corsair H80i / 4x4GB Crucial Ballistix Smart Tracer DDR3 1600 / 1TB Western Digital Caviar Black / 240GB Mushkin Chronos Deluxe SSD / 2x Evga GTX 670 FTW 2GB in SLI / Sound Blaster Recon3D Fatal1ty / Corsair HX1000w
kOrny Jan 04, 2011, 07:58pm EST Reply - Quote - Report Abuse
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>> Re: HDMI Overscan Problem, Any Solution?
This happened to me with a couple of my video cards (and my netbook, when connected to my HDTV). I fixed it by going into the ATI CCC and messing with the scaling options. Seems like you have nVidia cards and have tried something similar. Strange you can't get it to work.

Try different refresh rates too. Sometimes TV's can display refresh rates that it doesnt support, resulting in weird scaling issues... at least this has worked for me.

Dr. Peaceful Jan 05, 2011, 12:13pm EST Reply - Quote - Report Abuse
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Edited: Jan 05, 2011, 12:13pm EST

 
>> Re: HDMI Overscan Problem, Any Solution?
Looks like I am not alone!

Korny, personally I do like CCC more so than NV's driver util. Much more features and settings.

G.G. didn't reallize there are so many acronyms for HP. http://acronyms.thefreedictionary.com/HP

But I think I like this the best: HP = Horse Piss. XD


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