dbus, hal over xdmcp?
Anton Shterenlikht
mexas at bristol.ac.uk
Tue Jun 16 10:14:22 UTC 2009
On Sat, May 02, 2009 at 05:56:53PM -0400, Joe Marcus Clarke wrote:
> On Thu, 2009-04-30 at 15:27 +0100, Anton Shterenlikht wrote:
> > On Thu, Apr 30, 2009 at 09:08:39AM -0500, Robert Noland wrote:
> > > On Thu, 2009-04-30 at 03:34 -0400, Joe Marcus Clarke wrote:
> > > > On Tue, 2009-04-28 at 14:30 +0100, Anton Shterenlikht wrote:
> > > > > On Fri, Apr 24, 2009 at 01:38:58PM -0400, Joe Marcus Clarke wrote:
> > > > > > On Fri, 2009-04-24 at 12:27 +0100, Anton Shterenlikht wrote:
> > > > > > > I've read the dbus and hald man pages but I'm still confused.
> > > > > > >
> > > > > > > In a configuration where xserver connects to clients via XDMCP
> > > > > > > where do I need to run dbus and hald, or more specifically, on what
> > > > > > > computer do I need to have in /etc/rc.conf these two lines:
> > > > > > >
> > > > > > > dbus_enable="YES"
> > > > > > > hald_enable="YES"
> > > > > > >
> > > > > > >
> > > > > > > a. only on the machine which runs xserver?
> > > > > > > b. only on the machine which runs the clients?
> > > > > > > c. on both the xserver and clients machines?
> > > > > > >
> > >
> > > As far as keyboard and mouse are concerned these are client side
> > > devices. The server itself can be run headless, though it has been a
> > > very long time since I've done anything like that... You might need hal
> > > on the server side for things like auto-mounting server side cd's or
> > > whatever, but not for kbd/mouse.
> >
> > I understand this refers to hal, isn't it?
> >
> > But dbus is about interprocess communication, and the processes are
> > run on a remote box. So should I run dbus daemon on the remote box
> > as well, or instead of, the xserver box?
>
> You need to run on both. The process address space is still on the
> XDMCP server, so the system daemon must be running there. The clients
> have mice and keyboards so they need dbus and hald. You will also need
> to start your dbus-enabled processes with dbus-launch, or start your
> local X session with dbus-launch so that a session bus is running. This
> session bus will also be running on the XDMCP server.
Both hal and dbus daemons are running on both the X server and XDMCP server.
And I launch the session with:
%head $HOME/.xsession
dbus-launch --exit-with-session mwm
Still on the XDMCP server I just see:
# ps ax | grep dbus
594 ?? Is 0:00.02 /usr/local/bin/dbus-daemon --system
98706 ?? S 0:00.04 dbus-launch --exit-with-session mwm
98709 ?? S 0:00.00 dbus-launch --exit-with-session mwm
98710 ?? Ss 0:00.00 /usr/local/bin/dbus-daemon --fork --print-pid 7 --pri
98712 p0 R+ 0:00.00 grep dbus
#
and on the X server I just see black screen. I can move the mouse, but
nothing happens with any clicks.
If I start the session with no dbus-launch, I can use mwm fine, but no
dbus.
What else can I check?
many thanks
anton
--
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 928 8233
Fax: +44 (0)117 929 4423
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