[mgp-users 00935] Re: Problems embedding apps in presentations

[Chris Tyler <chris@global.proximity.on.ca>]

I don't have experience with those applications, but the RTC error sounds 
like the permissions on /dev/rtc don't permit access to the user ID you 
are using.

According to the mplayer homepage, it can interface with X11 through 4 or 
5 different mechanisms, perhaps you should try different ones with command 
line options. Some require root priviledge, some require various server 
extensions to be loaded as part of your X server configuration, but one of 
them will probably work!

(The simplest place to start would be trying to run xmgp as root if you 
haven't already and see what happens).

(Between using options (1) and (2) below, you should use (1) where 
possible because it will permit the clients (mgp and embedded apps) to use 
fast local transports rather than TCP/IP -- the problem with TCP/IP is 
that the communication between the program traverses the entire TCP/IP 
stack twice (once down, once up) for each packet).

--
Chris Tyler


On 2002.06.07 05:45 Grunde L|voll wrote:
> Thanks again,
> both (1) and (2) allmost works. Everithing works fine until I try to play
> a mpeg-video (with mplayer or gtv) inside the presentation. Then I get
> the
> following error message (in the terminal where I  started (x)mgp):
>   .
>   .
>   Linux RTC init error in ioctl (rtc_pie_on): Permission denied
>   Using usleep() timing
>   Input config file /etc/mplayer/input.conf parsed : 50 binds
>   .
>   .
> And the presantation freezes, but I'm able to go to the other X-session
> with Ctrl-Alt-F7 and kill the prosess.
>
> When I ran mgp without a wm  and with a single X-session as proposed in
> another post on the list the videoplayer worked. Other X-apps like xeyes
> or xclock works under both (1) and (2). So the question is if there is
> something wrong with my videoplayer or the resources avalible to X in the
> secon session? Would it help if the xmgp script is owned by root with
> the sticky-bit set? It would be really neat to hav this thing working in
> a secon X-session, and be able to switch between the presantation and the
> desktop during presentations or while writing the presentation...
>
> Best
> Grunde
>
>
> On Thu, 6 Jun 2002, Chris Tyler wrote:
>
> > Actually, the hostname should be in front of the colon, if you're using
> > TCP/IP; otherwise, it should be blank or "unix" to specify Unix domain
> > sockets. I think the other poster actually meant to suggest ":0.0"
> instead
> > of "0:0", but display zero is the normal X server started by gdm/kdm in
> > runlevel 5.
> >
> > Here are two other things to try:
> >
> > (1) Use the "-ac" option:
> >
> >     #!/bin/bash
> >     #
> >     # xmgp :: start mgp on its own display
> >     #
> >     DISPLAY=":1" export DISPLAY
> >     X -ac $DISPLAY 2>/dev/null &
> >     sleep 2      # give X a head-start
> >     mgp $*
> >     killall X            # terminate X when mgp exits
> >
> > (2) Use local loopback tcp/ip device:
> >
> >     #!/bin/bash
> >     #
> >     # xmgp :: start mgp on its own display
> >     #
> >     DISPLAY=":1" export DISPLAY
> >     X -ac $DISPLAY 2>/dev/null &
> >     sleep 2      # give X a head-start
> >     DISPLAY="localhost$DISPLAY"
> >     mgp $*
> >     killall X            # terminate X when mgp exits
> >
> > Let me know how it goes...
> >
> > --
> > Chris Tyler
> >
> >
> > On 2002.06.06 15:52 Grunde L|voll wrote:
> > > My distro is RH7.3 width ximian gnome.
> > >
> > > If DISPLAY="0:0" conflicts width my primary server would
> > > DISPLAY="1:1" not? or?
> > >
> > >
> > > Maby I'll try both...
> > >
> > > Best
> > > Grunde
> > >
> > > On Thu, 6 Jun 2002, Chris Tyler wrote:
> > >
> > > > Don't use DISPLAY="0:0" or you'll conflict with your primary X
> > > server...
> > > >
> > > > Try adding "-ac" to the X command (turns off access control).
> > > >
> > > > What is your distro?
> > > >
> > > > --
> > > > Chris Tyler
> > > >
> > > >
> > > >
> > > > On 2002.06.06 10:32 Daniel Schlieper wrote:
> > > > > Try
> > > > >
> > > > >   DISPLAY="0:0" export DISPLAY
> > > > >
> > > > > instead of
> > > > >
> > > > >   DISPLAY=":1" export DISPLAY
> > > > >
> > > > > maybe this helps.
> > > > >
> > > > >
> > > > > Daniel
> > > >
> > >
> > > -----
> > > Grunde Løvoll
> > > mailto:grundel@fys.uio.no
> > > http://www.fys.uio.no/~grundel/work.html
> > >
> > >  f u cn rd ths u r prbly a gk
> > >
> >
>
> -----
> Grunde Løvoll
> mailto:grundel@fys.uio.no
> http://www.fys.uio.no/~grundel/work.html
>
>  f u cn rd ths u r prbly a gk