Re: Print dialog hangs for several seconds before activating

[David A Benjamin <davidben MIT EDU>]

I've run into this issue (and have been poking at it recently). The core 
problem appears to be that, although GTK+ is using CUPS and setting things 
like httpBlocking off, the CUPS "non-blocking" API isn't. See 
conversations with CUPS developers at [1,2,3].

It appears that the only sane way to interact with CUPS in a GUI 
application is to use separate threads. If folks do not object the change, 
I'll try my hand at them.

David

[1] http://www.cups.org/newsgroups.php?s3708+gcups.development+v3713+T0
[2] http://www.cups.org/newsgroups.php?s3708+gcups.development+v3714+T0
[3] http://www.cups.org/newsgroups.php?s3708+gcups.development+v3716+T0


On Wed, 9 Jun 2010, Shawn Bakhtiar wrote:

> For some reason the Print dialog hangs for several seconds before fully activating. During this
> period I am unable to push any buttons and on my OS X 10.6.3, I get the little color wheel. After a
> few seconds, The dialog pops bigger, with several added tabs show up at the top (printer info).
>
>
> jhbuild info
>
> ....
>
> Name: gtk-i386
> Module Set: gtk-osx-universal
> Type: autogen
> Install-date: not installed
> URL: http://ftp.gnome.org/gtk+/2.16/gtk+-2.18.2.tar.bz2
> Version: 2.18.2
> Tree-ID: 2.18.2-d41d8cd98f00b204e9800998ecf8427e
> Required-by: meta-gtk-universal
>
> Name: glib
> Module Set: gtk-osx
> Type: autogen
> Install-date: 2010-03-22 16:31:17
> URL: http://ftp.gnome.org/pub/GNOME/sources/glib/2.22/glib-2.22.2.tar.bz2
> Version: 2.22.2
> Tree-ID: 2.22.2-d41d8cd98f00b204e9800998ecf8427e
> Required-by: glibmm, gnome-mime-data, pango, enchant, shared-mime-info, libsoup, atk
> After: meta-gtk-osx-bootstrap, gtk-doc
> Before: loudmouth, gstreamer
>
>
> .....
>
>
>
>
> According to google, there seems to be a bug everyone is working arround, I have as of yet to
> implement correctly on my machine.
>
> https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/475845
> https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/475845/comments/29
> https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/359975
> http://serverfault.com/questions/104935/authinforequired-cups-overwrites
>
> Has anyone run into this problem, and is there a fix I am not aware of?
> Thanks in advance,
> Shawn