[Gambas-user] Issue 161 in gambas: 4296 broken

[gambas at ...2524...]

Comment #7 on issue 161 by adamn... at ...626...: 4296 broken
http://code.google.com/p/gambas/issues/detail?id=161

Well, I finally tracked it down. It was a local issue.

The problem was caused by a set of 8 or so "non-existent" printers that had  
somehow been discovered by the CUPS print server on this machine. (I  
believe _that_ was caused by a recent reconfiguration of my network).

Anyway, for interest sake, here's what was happening.

Gambas3 was starting up correctly all the time. However, it was taking over  
half an hour for the welcome screen to show up.  I found that out on  
Christmas day, I tried starting it up again after another trunk  
update/reconf/etc and got called to go out to lunch. Instead of killing the  
job I just "accidentally" left it running.

When we returned 6 hours later the Welcome screen was there!

I loaded the IDE project and stepped through it, line by line and found  
that it appeared to hang in FMain._new on the line FHelpBrowser.Load (line  
41) and sure enough after about half an hour it continued properly.  Aha! I  
thought.  Maybe I have broken one of the WebKit libraries.

So I spent all yesterday reloading and recompiling every WebKit oriented  
library on this system. Nothing improved.  What was worse, both the WebView  
example and a little project I made up with a WebView control worked fine.

This morning I had an epiphany (as in "a sudden, intuitive perception of or  
insight into the reality or essential meaning of something")!  What else on  
the FHelpBrowser form could cause this.  How about the Printer control?   
Sure enough as soon as I added a printer control to my little test project  
it exhibited the same behavior.

Seeing as there are no printers directly connected to this machine I just  
had a look at the CUPS manager and discovered the phantom printers, about a  
dozen of them.  All of them with the same name as the default network  
printer. (Note the CUPS "name" of a printer is a fairly meaningless term.)

With a bit of effort I have cleaned up the CUPS server and now gambas3  
starts and runs as it did before. Yahoo!

====================================

I have provided the above to ask you this.  When the printer control is  
created I think that it is "polling" each printer or more to the point,  
printer queue, it is told about by the system until it either times out or  
gets some response and the wait time appears to be quite long.  Is this  
true?