[kde-linux] Why does webkam require printer?

[Kevin Krammer]

On Thursday, 2010-01-14, Thomas Taylor wrote:
> On Thursday 14 January 2010 01:54:02 am Kevin Krammer wrote:
> > On Wednesday, 2010-01-13, Thomas Taylor wrote:
> > > I've been trying to get the builtin webcam in my Dell studio 1745 to
> > > work without success.  After digging around through various logs and
> > > web searches, it seems that KDEs' webkam requires a printer to be set
> > > up in cups.  Why?
> > >
> > > I don't have a printer connected to my laptop and currently no "home"
> > >  network. My wife and I take turns switching cables to the internet
> > >  (wireless will come soon I hope).
> > >
> > > This is the output in messages after trying to start webkam:
> > > *******
> > > laptop:/home/tom/Documents # tail /var/log/messages
> > > Jan 13 10:49:28 laptop kernel: [   29.371764] Slow work thread pool:
> > >  Starting up
> > > Jan 13 10:49:28 laptop kernel: [   29.371912] Slow work thread pool:
> > > Ready Jan 13 10:49:28 laptop kernel: [   29.371979] FS-Cache: Loaded
> > > Jan 13 10:49:28 laptop kernel: [   29.408690] FS-Cache: Netfs 'nfs'
> > >  registered for caching
> > > Jan 13 10:49:28 laptop sm-notify[2377]: Already notifying clients;
> > > Exiting! Jan 13 10:49:36 laptop kernel: [   37.238114] eth0: no IPv6
> > > routers present Jan 13 10:49:46 laptop checkproc: checkproc: can not
> > > get session id for process 3568!
> > > Jan 13 10:50:02 laptop python: hp-systray[3743]: warning: No hp: or
> > > hpfax: devices found in any installed CUPS queue. Exiting.
> > > Jan 13 12:59:43 laptop su: (to root) tom on /dev/pts/1
> > > Jan 13 13:02:19 laptop su: (to root) tom on /dev/pts/1
> > > laptop:/home/tom/Documents #
> > > *******
> > > The laptop python line sometimes comes up with lp instead of hp.  This
> > >  happens every time I try to start webkam.
> >
> > hp-systray sounds like a Hewlett Packard tool, probably  something
> >  displaying printer status such as ink levels in the system tray part of
> >  the panel.
> >
> > Since I haven't heard about a program called "webkam" yet, where did you
> >  get it from?
> > Could it be part of a set of utilities for HP hardware?
> >
> > Cheers,
> > Kevin
> 
> It's a kde app.  Not sure which forum I heard about it in.  See attached
> image.

Nice, never heard of it before.
Interestingly an application using one of our bindings, never heard of any of 
them before either.


Anyway. I think there must be a different problem. The look for the printer is 
initiated by a printer manufacturer's tool.
Can you try starting webkam from a console and see if it says anything 
specific itself?
And/or check $HOME/.xsession-errors (this is where log output of applications 
started through the launcher menu ends up).

Cheers,
Kevin
-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring
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