[Info-vax] bizarre problem displaying JPEG files with CSWB

[JF Mezei]

Phillip Helbig---undress to reply wrote:
> Displaying JPEG files with CSWB (with file:///, not http://; transport 
> LOCAL or TCPIP doesn't matter), I find that files above a certain size 
> will not display, but the time taken to read the file is what it should 
> be, scroll bars of the right size appear etc---everything works OK, 
> except the screen is blank.
> 
> The strange thing is that this happens only when the display is directed
> to a certain machine X, 


FredK would have been THE person to answer this. Alas, he is not with us
anymore. His contributions here are not forgotten.

My suspicion is that the display lacks a certain extention and  Mozilla
will then send the image as a large uncompessed bitmap which overwhelms
the display.

I would check what extentions are enabled on that display.

Run the utility xdpyinfo on the faulty display and on a display where
the same operation works and compare the results.


If you have a http://www.chocolate.com/mybigfile.jpg  does it work ?


With firefox, when opening a big image, it scales the image to fit the
screen, and the cursor is a magnifying glass where, if you click on the
image, it then gets to its full size.

I think it should work the same with a file:// URL.


With an image inside HTML, the browser will first scale the image to fit
inside teh space allocated to it by the HTML, so it will send a smaller
bitmap to the X display.