Screen size

Sat, 2009-04-11 08:36 by Brigham · Forum/category:

I have a problem that has just cropped up. My maximized screen is just a little too wide. I can only see a fraction of the close button and am unable to use the scroll facility unless I reduce the size of the screen. I am unable to move the screen as a whole when it is in the maximized mode so I can't reduce the size like that. I unable to recollect when it started exactly, but I haven't been doing anything unusual.

CRT or LCD?

Sat, 2009-04-11 10:07 by admin

Is that a Cathode Ray Tube (CRT) monitor? If so, you can change the parameters by using the monitor buttons.

If the range of the settings is insufficient, change the image repeat frequency to a lower (or perhaps higher) one. You can do that by right-clicking on the desktop background, then choosing Properties, Settings, Advanced, Monitor, Sreen refresh rate.

You may also be able to change that through the graphics adapter driver utility that comes with most graphics adapters.

After changing the frequency, adjust your monitor again.

If you have an LCD (flat) monitor, this should not happen. If it happens, the monitor is probably connected over an analog connection, like a 9- or 15-pole VGA socket. That's not a very good idea, the connection should be a digital one, if at all possible. But if you have no choice, then set your screen refresh frequency to 60 Hz, which is the physical image repeat frequency most LCD monitors use. They cannot really use any other without loss of image quality.

Screen size

Sat, 2009-04-11 11:25 by Brigham

I have an LCD monitor the refresh rate is set at 75Hz. The drop down menu only has this frequency on it. It does have a fifteen pole socket connection. It has been working perfectly well with this configuration for 3 years. The image quality has not altered to the naked eye. The change at the edge of the screen is probably less than half an inch, but it is a nuisance to have to revert to the minimised screen to scroll the picture. I never seem to get a simple problem!!!

Screen size

Sat, 2009-04-11 15:21 by Brigham

Panic over (mine of course) The screen wasn't centered, all I had to do was to use the control on the side of the monitor. Sorry about that.

No problem

Sat, 2009-04-11 16:28 by admin

These things happen.

I'm a bit surprised that it is set to 75 Hz and cannot be set to 60 Hz. That seems a bit strange.

Unless the monitor really uses 75 Hz, and I've never seen any that does, you may have a somewhat jittery video display, for example when you watch a movie from a DVD, because 75 Hz doesn't sync well with the movie frame rate. Every 4th or 5th frame will stay on the screen twice as long as the others. But perhaps that's hardly noticeable on a slow LCD screen at a frame rate of 25 or 30 per second. That would be about 6 small irregularities per second.

monitor frequency

Sun, 2009-04-12 11:18 by Brigham

I had a poke around the display mode and found a tick box that said don't show frequencies that can't be displayed by this monitor. I unticked it and found these frequencies. 43 Hertz Interlaced, 47 Hertz Interlaced, 75 Hertz, and 85 Hertz.
I expect you know what this is all about, I'm just happy to be able to work my computer. Once again thanks for your help.

A bit strange

Sun, 2009-04-12 13:57 by admin

For sure you don't want any interlaced settings, so avoid these. The strangeness remains that the standard 60 Hz setting is missing.

I guess that your LCD screen was not automatically recognized, and now you get settings for some other standard monitor.

Which monitor type does the dialog box indicate? That would be a cue to the problem. On the other hand, if everything works satisfactorily, there is no urgency to do anything.

Monitor

Sun, 2009-04-12 16:04 by Brigham

The dialog box indicates the monitor I am using (Philips 190x6) I did have a CD for it.

Hmm

Sun, 2009-04-12 17:17 by admin

That's good. Anyway, problem solved. The rest of this message is pure theory and curiosity.

I feel like hunting a phantom, but the technical data say this:

  • Maximum Resolution: 1280 x 1024 @ 75 Hz
  • Recommended Resolution: 1280 x 1024 @ 60 Hz

This is already nonsense, as the frequency has nothing to do with the resolution, but let's assume that the dude who wrote that just didn't know what resolution means.

Now if the driver doesn't offer a choice of the "Recommended Resolution", that looks like a driver error to me.

I would try to download the latest monitor driver and check whether that resolves this issue, but you might as well mark down the whole issue and ignore it, as long as you don't have any concrete problem.

I also cannot know whether they actually change the image frequency or whether the screen always runs at the standard 60 Hz, and a faster image frequency from the computer is simply solved by buffering the images. I would guess the latter, but it is theoretically possible that this screen actually runs at 75 Hz and repeats images if they are delivered more slowly. I'd be curious about that, so if you ever find out, please report here, but altogether this now seems rather theoretical and not really important for your actual use any more.

In any case the optimal setting is always that the computer sends the images at exactly the frequency at which the monitor displays them.

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