exporting the display doesn't work again

[Gregory Nowak]

Janina and all,

I decided to implement the second suggestion in that note, and am pleased with the results. Thanks to all that helpped. If things stop working again as they should, I'll come back to bug all of you again (grin).
Greg


On Mon, Mar 18, 2002 at 03:15:25PM -0600, Gregory Nowak wrote:
> Thanks Janina, if things get to the point where I really can't resolv this, I'll try the suggestion. Although, I would prefer to not have X run everytime I boot.
> Greg
> 
> 
> On Mon, Mar 18, 2002 at 04:04:03PM -0500, Janina Sajka wrote:
> > Gregory:
> > 
> > I am sorry that I haven't been reading this thread, so I don't know if 
> > what I'm going to tell you has been covered already. But, if it has, just 
> > delete this and smack me later with a wet noodle! <grin>
> > 
> > Some years ago I asked for similar advice on blinux. Dave Mielke wrote me 
> > a nice note on this issue, and his advice was something I've kept all 
> > these years in a file. I know share it with you in hopes it will help. 
> > 
> > Drum roll,  ..... ..... ..... ..... ..... .....
> > Here's Dave!
> > 
> > >From dave at mielke.cc Wed Nov  8 20:45:28 2000
> > 
> > [quoted lines by Janina Sajka on February 2, 2000, at 12:18]
> > 
> > >My problem is that I need to launch X in order to launch VMware -- so
> > >there's the no speech problem here. How can I get around this? Can I maybe
> > >cause X to launch and then start VMware -- say as Console F7 -- by putting
> > >some kind of statement in my .bashrc?
> > 
> > The best way, in my opinion, is to have X running all the time. If you're using
> > a RedHat-like system, then all you need to do is change the default system run
> > level from 3 to 5. Find the "initdefault" line in "/etc/inittab", change the
> > number, and reboot ("init q", in this case, doesn't work very well). The line
> > you're looking for, looks like this:
> > 
> >     id:5:initdefault:
> > 
> > When you start X, it always assumes that it should take over the console. It
> > does this by claiming the first free virtual console, and then switching to it.
> > After you boot, therefore, your system will automatically switch to the virtual
> > console in which X is running near the end of system initialization. You can
> > easily get back to a text console by pressing ctl-alt-F1. Just alt-F1 won't
> > work, as X takes over that ability, so you need to add the control key to the
> > sequence. This console takeover by X, by the way, would also happen if you were
> > to start it from the command line; you'd still need to ctl-alt-Fn your way back
> > to your text console session.
> > 
> > With X running, you need to do something else in order to allow yourself to
> > start X applications when not logged in via X. You need to authorize those
> > "foreign" applications to use the X display. To do this, edit the file
> > "/etc/X11/xdm/Xsetup_0", and add the following line at the bottom:
> > 
> >     /usr/X11R6/bin/xhost +localhost
> > 
> > This change allows any X application started on your own machine to use your
> > machine's own X display. It takes effect whenever the X server is restarted.
> > You can do this either by rebooting or by switching to the virtual console that
> > X is using and then pressing ctl-alt-backspace.
> > 
> > With this done, set your "DISPLAY" environment variable to ":0" so that the X
> > applications will know how to contact the correct X server. If you're using
> > bash, then do:
> > 
> >     export DISPLAY=:0
> > 
> > If you think that there'll never be any need for someone to look at what's on
> > the X display, then there's a simpler way to do it. Ignore anything said above,
> > and just do the following two things. First, add an invisible X display to your
> > system by adding the following line to the bottom of "/etc/inittab":
> > 
> >     xv:2345:respawn:/usr/bin/X11/Xvfb :2 -ac -screen 2 800x600x32 -fn 7x14
> > 
> > Either rebooting or executing "init q" will cause this change to take effect.
> > Then, direct your X applications to this server by setting "DISPLAY" to ":2".
> > If you're using bash, then do:
> > 
> >     export DISPLAY=:2
> > 
> > I, personally, do both. I then point DISPLAY at :0 for applications which have
> > important output, e.g. NetScape, and to :2 for applications with unimportant
> > output, e.g. RealPlay. I prefer using the invisible display whenever possible
> > because it's less problematic. Sometimes the visible X display gets into
> > trouble, and I then require sighted assistance in order to recover it.
> > 
> > -- 
> > Dave Mielke           | 856 Grenon Avenue | I believe that the Bible is the
> > Phone: 1-613-726-0014 | Ottawa, Ontario   | Word of God. Please contact me
> > EMail: dave at mielke.cc | Canada  K2B 6G3   | if you're concerned about Hell.
> > 
> > ---
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> > with subject line: unsubscribe
> > 
> > -- 
> > 	
> > 				Janina Sajka, Director
> > 				Technology Research and Development
> > 				Governmental Relations Group
> > 				American Foundation for the Blind (AFB)
> > 
> > Email: janina at afb.net		Phone: (202) 408-8175
> > 
> > Chair, Accessibility SIG
> > Open Electronic Book Forum (OEBF)
> > http://www.openebook.org
> > 
> > 
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