Main Area and Open Discussion > Living Room

I was wrong - again! (cheap monitor theory invalid)

(1/4) > >>

nudone:
A few month back I bought a cheap Samsung 24" monitor. This was for a secondary machine that I only occasionally need to use (off premises). After a few days I realised the screen was hurting my eyes within a short period of use. More investigation made it obvious that the text on the screen was slightly blurred in the center of the monitor.

I immediately concluded that this was due to it being a budget priced monitor and enjoyed telling everyone (that would listen) that budget monitors where evil - even to the point that they should be given a health warning, or simply banned from sale.

I've now discovered this isn't the case - and, also realised that my memory must be failing otherwise I wouldn't have come to this wrong conclusion.


The simple fact is that it isn't the monitor that is evil, it's the GRAPHICS CARD.

I've just plugged my EIZO (crystal clear image) monitor into the secondary computer I mentioned above. And the exact same problem has happened with the blurry text.


Now, maybe I'm still jumping to conclusions; there are three possible causes as I see it:

1) It's the graphics card - an onboard intel thing.

2) It's the VGA connection (Yes, I know, maybe I should have thought about that being the cause before - as I said, my memory is going, I know I've seen similar poor signal coming from VGA before).

3) It's the operating system (though, I have reconfigured cleartype and enabled/disabled it several times without any improvement).


The onboard card only has VGA out (which is then going to DVI on the EIZO) so I'm going to stick another card in with DVI connections - which I expect will make everything work perfectly.


So, I just wanted to say, to anyone out there still using VGA connections (even to an LCD), you may like to consider upgrading your graphics card. There really is a dramatic difference in quality, well, blurred text isn't fun to read even if it's almost imperceptible.

mouser:
I had this experience recently which was the result of the video card not choosing a resolution that was native to the monitor.

In my case the cause of this mismatch was a fault in the monitor itself.  It was solved by gothi[c] (who got the monitor as a reward), by manually overriding the timing information returned by the monitor with good values from an identical branded monitor.

Nudone, it doesn't sound like this is the same as your problem -- but similar enough that I would investigate the resolution/refreshrate settings you have configured for your monitor, and try different ones, and make sure you have your computer graphics card settings set to something native to the monitor.

nudone:
That's very interesting - but I've resolved the issue by putting in another graphics card that wouldn't be of any use otherwise.

Mouser, when you say timing, are you referring to the refresh frequency? If so, that's something I always check along with the native resolution.

I think what I pointed out above is old news to be honest. I remember reading stuff about why DVI was superior over VGA a few years back - and have seen the inferior image quality on VGA connections several times before, which were always resolved by plugging in a DVI connection (if the possible).

I'm sure there will be others on the forum that can explain the differences. One very obvious and important difference that I noticed after swapping the connection to DVI was that the monitor "settings" were nolonger available via the monitors own control menu - they are disabled because they simply aren't required anymore; the DVI signal doesn't require all the adjustments necessary when using a VGA signal.

(Again, I should have realised something was odd when I first saw all the weird options available on the budget monitor. Things I've never seen before because I've not used a VGA connetion before on an LCD monitor.)

mouser:
Yes, by timing i meant refresh frequency.

To be honest I've never really noticed a difference between vga and dvi connections to a monitor, but after reading this i will make sure to avoid using vga connections when possible.

steeladept:
From what I understand, DVI is superior only because it is a digital signal and, therefore (presumably) cleaner input.  VGA connections are quite acceptable, however, as long as the components are quality components and all connections are tight.  From my electician's background, I can say it is most typically the cable connectors that cause issues.  And while the card may indeed be at fault, don't throw it out as bad until it is actually verified.  Different cable, ideally the card installed in a different computer, and particularly with two or more different monitors all reproducing the same effect would prove it.  Short of that, there is no guarantee it is the card as you claim.

With all that said, a digital input will tolerate poor connections better as they are designed with built in variability that the VGA and other analog inputs must interpret as different signals (by design).  This is the true reason DVI is considered better than VGA (or digital is better than analog).  It is the built in variability tolerance of the design.

Navigation

[0] Message Index

[#] Next page