HDMI vs DVI - display differences

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Network1

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Some help pls. I have an ATI Radeon HD 5670 graphics card and a Samsung SyncMaster B2330 monitor. My display resolution is set at 1920 x 1080. It is connected via DVI cable. I experimented today by hooking it up via HDMI. My display image at the same resolution changed - the picture did not cover the full screen and was strenuous on the eyes. Why would that be - I was under the impression both serve the exactly same purpose, excluding sound. :confused:

I also found that when the HDMI cable is used, I have to use the audio out on the monitor for sound - the computer audio out is disabled should I use a media player program.
 
Network1 said:
I was under the impression both serve the exactly same purpose, excluding sound. :confused:
Click to expand...

The above is correct.

I'd imagine you need to disable the HD5670's onboard sound, as it's trying to send it to a monitor with no speakers.
 
I can explain. the ATI graphics driver using HDMI does something called underscan to support old LCD TV displays with HDMI. you can turn it off in the ATI control panel on a slider. Not sure where, but you can google "underscan ATI driver"

DVI and HDMI is basically the same, but HDMI adds an audio signal as well.
 
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Sapphiron said:
I can explain. the ATI graphics driver using HDMI does something called underscan. you can turn it off in the ATI control panel. Not sure where, but you can google "underscan ATI driver"

DVI and HDMI is basically the same, but HDMI adds an audio signal as well.
Click to expand...

Interesting - will try and find it - one learns something new everyday. :)
 
Sapphiron said:
I can explain. the ATI graphics driver using HDMI does something called underscan to support old LCD TV displays with HDMI. you can turn it off in the ATI control panel on a slider. Not sure where, but you can google "underscan ATI driver"

DVI and HDMI is basically the same, but HDMI adds an audio signal as well.
Click to expand...

I can confirm this. Furthermore, some panels will overscan, so the image will stretch. I had to switch this off on my panel. They are sending the same signal, but for some reason all this extra crap was turned on when I switched to HDMI.
 
Try turning the sharpness on the monitor up to make the letters sharper.

There is also an option for "clear-fonts" or something like that which sharpens text.
 
While someone is on such a topic.. I would like to ask something..

I have a screen that uses the Blue port.. Not sure if that is a VGA or DVI.. But my GPU can support HDMI.. SO I want to know. if it's worth getting a new screen that has HDMI.. or is it just waste of money.. (Seeing the above.. )
 
Blue is vga (analogue).

Definately worth upgrading to DVI/HDMI (digital), much sharper image.
 
Ono'rach said:
Try turning the sharpness on the monitor up to make the letters sharper.

There is also an option for "clear-fonts" or something like that which sharpens text.
Click to expand...

The sharpness settings had no effect - now in search of the clear-fonts or something .....:D
 
Network1 said:
The sharpness settings had no effect - now in search of the clear-fonts or something .....:D
Click to expand...

I found a font - clear font - setting - made no difference- my eyes are now stuffed - going back to dvi setting - a bit of a disappointment - feels like regression.....:cry:
 
Guys, this issue has nothing to do with the PC or graphics card! It is screen related!

I've made an inquiry regarding this exact same issue earlier this week at Samsung SA. I haven't received a reply from them yet, except for the message indicating that they received my message, which I got like 2 days later!!

Network: there is an option on the screen, where you can toggle between AV/PC input and changing it to the other option would solve the scaling issue. That option solves the scaling issue, but when you switch off the PC, the screen doesn't switch off!

The other option that you have is to use an HDMI-DVI adapter (which you get with most graphics cards) and then plug in the cable in the DVI connector of the screen. This solution does fix the scaling and shutdown issue!

AFAIK, these issues are just related to the Samsung B2330H (or B2330) screens, and I've seen it with every single one of them - seeing that my office have like 8 of them and a friend of mine also has one.

Hope this helps :)
 
Pada said:
Guys, this issue has nothing to do with the PC or graphics card! It is screen related!

I've made an inquiry regarding this exact same issue earlier this week at Samsung SA. I haven't received a reply from them yet, except for the message indicating that they received my message, which I got like 2 days later!!

Network: there is an option on the screen, where you can toggle between AV/PC input and changing it to the other option would solve the scaling issue. That option solves the scaling issue, but when you switch off the PC, the screen doesn't switch off!

The other option that you have is to use an HDMI-DVI adapter (which you get with most graphics cards) and then plug in the cable in the DVI connector of the screen. This solution does fix the scaling and shutdown issue!

AFAIK, these issues are just related to the Samsung B2330H (or B2330) screens, and I've seen it with every single one of them - seeing that my office have like 8 of them and a friend of mine also has one.

Hope this helps :)
Click to expand...

Well Pada, this is very good news on a Saturday morning - will undertake the recommendations now now. :) Whilst you have a number of these, do you also have the problem that you cannot use the Magic Tune system on this model?
 
Pada said:
Guys, this issue has nothing to do with the PC or graphics card! It is screen related!

I've made an inquiry regarding this exact same issue earlier this week at Samsung SA. I haven't received a reply from them yet, except for the message indicating that they received my message, which I got like 2 days later!!

Network: there is an option on the screen, where you can toggle between AV/PC input and changing it to the other option would solve the scaling issue. That option solves the scaling issue, but when you switch off the PC, the screen doesn't switch off!

The other option that you have is to use an HDMI-DVI adapter (which you get with most graphics cards) and then plug in the cable in the DVI connector of the screen. This solution does fix the scaling and shutdown issue!

AFAIK, these issues are just related to the Samsung B2330H (or B2330) screens, and I've seen it with every single one of them - seeing that my office have like 8 of them and a friend of mine also has one.

Hope this helps :)
Click to expand...

Yes, changing the AV to PC input does solve 2 issues - the scaling issues (I had to undo the changes a I made), and it takes away the woolly/fuzzy letters! :D

Now I am just contemplating what I will achieve by using the adapter - is it not then the same as just using the standard DVI cable, since I will be losing sound as well by using the HDMI/DVI adapter?
 
You won't lose the sound, unless the screen doesn't support sound via the DVI port, because the wiring of the HDMI & DVI are identical. I actually don't know why you want to output the sound to the screen in any case...

I'll have a look into the Magic Tune thing.
 
Pada said:
You won't lose the sound, unless the screen doesn't support sound via the DVI port, because the wiring of the HDMI & DVI are identical. I actually don't know why you want to output the sound to the screen in any case...

I'll have a look into the Magic Tune thing.
Click to expand...

I have been running video via DVI cable to monitor and sound from PC to Amp. Iro the sound, I do not an advanced sound card, only the minimum onboard output to my amp, which does not have HDMI, but optical and digital inputs. I was just experimenting with the HDMI from graphics card to monitor, since I have been using the DVI input up to yesterday. Since I loose sound from the computer with the HDMI, I plug monitor audio out to my amp. I thought DVI only carries video, from there the issue of sound loss - therefor my interpretation that I then should revert back to straight DVI and sound from PC. I was secretly hoping that audio out from the monitor would open up more options in getting 5.1 data to my amp.
 
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