dbus, hal over xdmcp?

Thu Apr 30 14:09:02 UTC 2009

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.

robert.

> > > > I've tried various configurations, but cannot still cannot
> > > > get a web browser to run, only endless dbus-launch and dbus-daemon
> > > > processes.
> > > > 
> > > > I've looked at man pages for dbus-launch(1), dbus-daemon(1), hald(8),
> > > > and at freedesktop.org/software/dbus, but cannot find the answer.
> > > 
> > > These daemons need to run on the machine with the working mouse and
> > > keyboard.  So, you want them on the machine at which you're sitting.
> > > But that's only half of the battle.  You also need to start up a
> > > dbus-enabled session.  For example, something like this in .xinitrc:
> > > 
> > > dbus-session --exist-with-session fvwm
> > > 
> > > That's very simplistic, but hopefully it give you enough of a clue to
> > > implement this in your XDMCP setup.
> > 
> > Joe, thank you
> > 
> > Please confirm I don't need to run hal or dbus daemons on the remote
> > machine.
> > 
> > I tried what you suggested, but still get nowhere.
> > 
> > 1. I've
> > 
> > hald_enable="YES"
> > dbus_enable="YES"
> > 
> > in /etc/rc.conf on the machine with the keyboard and mouse.
> > 
> > This gives me
> > 
> > MKS# ps ax|grep hal
> >   725  ??  Ss     0:05.16 /usr/local/sbin/hald
> >   729  ??  I      0:00.19 hald-runner
> >   736  ??  I      0:00.11 hald-addon-mouse-sysmouse: /dev/psm0 (hald-addon-mous
> >   739  ??  S      0:00.15 hald-addon-storage: no polling on /dev/fd0 because it
> >   751  ??  S      0:00.74 hald-addon-storage: /dev/acd0 (hald-addon-storage)
> >   866  v1  R+     0:00.00 grep hal
> > MKS# ps ax | grep dbus
> >   566  ??  Is     0:00.14 /usr/local/bin/dbus-daemon --system
> >   870  v1  R+     0:00.00 grep dbus
> > MKS#
> > 
> > Does this look ok?
> > 
> > 2. I've no running hal or dbus daemons on the remote clients box.
> > 
> > 3. In $HOME/.xsession on the remote clients box I have:
> > 
> > dbus-launch --exit-with-session /usr/local/bin/mwm
> > 
> > 4. When I connect from the mouse box to the remote box via XDMCP, i.e.
> > 	X -query xx.xx.xx.xx
> > 
> > I get a mouse pointer, and nothing else. Niether mouse button
> > brings the pop-up menu, and I cannot run anything.
> > 
> > If I only have /usr/local/bin/mwm in $HOME/.xsession, I can
> > get xterm with right button click.
> > 
> > 5. So I cannot close connection to the remote box cleanly, and have to
> > kill X. This leaves several dbus processes on the remote box:
> > 
> > CLI% ps ax|grep dbus
> > 46121  ??  I      0:00.04 dbus-launch --exit-with-session /usr/local/bin/mwm
> > 46124  ??  I      0:00.00 dbus-launch --exit-with-session /usr/local/bin/mwm
> > 46125  ??  Is     0:00.00 /usr/local/bin/dbus-daemon --fork --print-pid 7 --pri
> > 46140  p1  R+     0:00.00 grep dbus
> > CLI%
> > 
> > What am I doing wrong?
> 
> I don't use xdmcp, and I only use GNOME, so I'm not exactly sure what is
> the best thing to do in this setup.  Maybe someone else can answer that.
> 
> It seems to me that you should probably be running dbus and hald on both
> machines.  You might also try removing the --exit-with-session from
> dbus-launch to see if that helps.
> 
> > 
> > 
> > In addition I get this kernel message every second on the mouse and keyboard
> > box (Compaq Armada 1700 FBSD 7.1-stable i386) after I launch dbus
> > and hal daemons:
> > 
> > acd0: FAILURE - unknown CMD (0x03) ILLEGAL REQUEST asc=0x24 ascq=0x00 sks=0x40 0
> > x00 0x00
> > 
> > What does this mean? Should I be worried?
> 
> No, these messages do not indicate a problem.
> 
> Joe

-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD
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