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Odd Graphics Problem Running IIS

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7 replies

by jerry m. gartner

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I've got a dev machine at home and recently developed a website for a local organization. When I view the site at http://localhost/... everything runs like a champ. When I browse to a site on the Internet, all of the .jpg's,(only.jpg's too), have these pink and red streaks in them. If I close the browser and then open it again, the streaks go away - unless I do the localhost view again and then they come back. Any ideas?? I would hate for this to happen to everybody who views the site whenit goes live. Thanks in advance!

7 replies

by lordinfidel

It sounds like it is just your graphics card.

I would swap it out for a different one.

IIS is unable to alter images in the fashion you are refferring to.

by jerry m. gartner

The problem only occurs after web pages are served up. My graphics card shouldn't be affected in any way by server activity.

by lordinfidel

Well then do a test.

Hook up another machine so that it can talk to your dev machnine.

Put a hosts file on that machine so that it can go to your website's configured host header name.

Go to the site on that machine, Do the images serve up correctly. If they do then it is either the Graphics card on your other machine or your web browser.

IIS can NOT alter images. The images are not processed on the server side. Even though in this case your are testing it on the server side. The pages are being processed by a different engine.

Your browser makes a request for a page. IIS takes that requests and returns the information back to the browser. It is then the browsers responsibility to process all of the information and return it to the OS. The OS then passes that information down until it finally get's to the graphics card which then renders the images.

I see this all the time in NT4, especially with video. It is the graphics card 99% of the time.

IIS does not render the images. And when you are surfing the net and you see the same things, do you really believe that every site out there is also broken? No.

You just have to keep in mind how the process works and then you can diagnosis.

Just don't throw out an answer because you don't like the answer without understanding the process first.

by jerry m. gartner

I understand the proccess and I did not mean to imply that IIS was somehow causing the issue by "rendering" the graphics. The problem only arises when I view the localhost url. I'm puzzled, that's all. The site is live now on an outside server and the problem doesn't occur when the pages are viewed from there but it still does when served up locally. I DO appriciate your time in this.

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