How to find the maximum resolution supported by the graphics card?

Question

So, I am making an app that will allow me to input some data on the client side, whether phone or another desktop running in the same network.

I have a Node.js server, which answers my requests, but I can't actually "read" them in the server side.

this is my code for the server

var http = require("http");

var parseString = require('xml2js').parseString;

var express = require('express')
var app = express();
var port = process.env.PORT || 8081;


var request = require('request');


app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  next();
});


// start the server
app.listen(port);
console.log('Server started! At http://localhost:' + port);


// routes will go here
app.use('/static', express.static('.'));

var bodyParser = require('body-parser');
app.use('/browse', bodyParser.json()); // support json encoded bodies
app.use('/browse', bodyParser.urlencoded({ extended: true })); // support encoded bodies


app.get('/', function(req, res, next) {
  // Handle the get for this route
});

app.post('/', function(req, res, next) {
 // Handle the post for this route
});


// POST http://localhost:8081/browse
app.get('/browse', function(req, res) {
  var browseRequest = req.body.browseRequest;
  console.dir("browseRequest: ");
  console.dir(browseRequest);

    res.send(JSON.stringify("response"));

});

(do I have redundant stuff here?)

And this is the part I am using for my html page

// Create the XHR object.
    function createCORSRequest(method, url) {

      var xhr = new XMLHttpRequest();
      if ("withCredentials" in xhr) {
        // XHR for Chrome/Firefox/Opera/Safari.
        xhr.open(method, url, true);
      } else if (typeof XDomainRequest != "undefined") {
        // XDomainRequest for IE.
        xhr = new XDomainRequest();
        xhr.open(method, url);
      } else {
        // CORS not supported.
        xhr = null;
      }
      return xhr;
    }


    // Make the actual CORS request.
    function makeCorsRequest() {
      // This is a sample server that supports CORS.
        var url = "http://192.168.0.100:8081/browse"
      var xhr = createCORSRequest('GET', url);
      if (!xhr) {
        alert('CORS not supported');
        return;
      }

        //xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");

          var req = { "browseRequest": {
                "name": "Aaron",
                "type": "Consumer",
                "age": 21

          }};
          xhr.send(JSON.stringify(req));

    }

I get the string sent by the server on my client, but I can't access the browserequest in the server because req.body is coming blank.

What am I missing here? Thanks !

Solution 1

If it's a CRT monitor then don't worry - all resolutions look crisp. If it's a TFT monitor, then see how its interpolation implementation holds up. I imagine the picture will be fine for the most part, but text might look a bit ugly (I recommend disabling ClearType in this case).

A video card's maximum resolution used to be a function of the size of its framebuffer (back in the 1990s when video cards only had 2-4MB of RAM which meant a screen size of 1024x768 @ 24bpp (1024*768*3 == 2.25MB). However this is a historical footnote and is of no relevance today.

I read up on the Intel 945 Express chipset and its described as only supporting SVDO and VGA output. SVDO is used for the built-in panel, so VGA is the output port.

1600x1200 sounds like a reasonable maximum for VGA on a laptop - this is because of the quality of the DACs required, and the good-quality circuitry required to drive anything higher. VGA has a maximum ceiling of 1920x1440 which my desktops are capable of - I used to use 21" CRTs and I ran them at 1920x1440 at times - but the signal wasn't really stable enough for quality work, so I ran at 1600x1200 most of the time.

For some reason TFT panels always display worse images of the same analoge VGA signal compared to CRTs - so even if you could force it to 1920x1440 (or 1920x1080) I'm sure you'll find the picture quality abysmal.

So when you do get a VGA monitor that runs at 1920x1080, I'd make it run at 1600x1080 (you can force custom resolutions (below the maximum) by tweaking some files - that way you won't get any pixel scaling and you'll get a reasonably sized workspace. You could try forcing it to run at 1920x1080 but the driver might reject it and fallback to 640x480.

If you'd like a 16:9 workspace regardless, then try disabling interpolation and running in 1:1 pixel mapping on your monitor - but your workspace will be a couple of inches smaller than if you didn't.

Does your laptop have a PCMCIA or PCI-Express card slot? It might be worth getting a card for that which supports higher resolutions (and DVI, instead of VGA). Such as http://sewelldirect.com/vtbookpcmciacard.asp

There are also USB video-cards available - but performance on them isn't great. They're only really useful for office work. They might stutter when it comes to web-browsing too. Your call. (but personally - I'd just replace the laptop. Even low-end

Solution 2

On Linux, you can use the commandline tool

xrandr

This will show the maximum resolution of your graphics card

Solution 3

Yes, you have the 945 express chipset, but you have either:

• Intel® 945GT Graphics or

• Intel® 945G/GZ Graphics

Both have a maximum supported resolution of 1920 x 1080.

See page 28 of the PDF document Intel 945G/945GZ/945GC/945P/945PL Express Chipset Family for 945G/GZ/GT.

Comments

[Kevin B]

you failed to tell the server what you were sending it. (the commented out part)

[seugnimod]

I commented it before because I was getting CORS error. Even with it uncommented I still have the body empty. Any tip ?

[Kevin B]

It is possible to send a JSON body with a GET request, and body-parser does support this.

[Steeve Pitis]

Could you send me a working example making an ajax get call with a json body ... I'm not sure the browser allow passing body in a GET request... (I know it's possible with CURL)

[seugnimod]

Thanks for your input Steve. I would also like to see that example @Kevin.

[Kevin B]

Most web browsers won't allow it.

[Steeve Pitis]

So this downvote isn't necessary. Because this answer will solve his problem.

[seugnimod]

Hey guys. I just switched it to POST and it works the way I was doing. I was almost sure I tried it before but it didn't work. Thanks both of you