Re: problem regarding setting DISPLAY env variable and hostname

Rob wrote:
On Wed, 22 Feb 2006 20:27:20 +0200
Giorgos Keramidas <keramida@xxxxxxxxxxxxxxx> wrote:

On 2006-02-22 10:17, Rob <rob@xxxxxxxxxxxx> wrote:
I have been trying to figure out how to set the display name on my
computer. I have a program used with Xorg that gives me the error
message:

_X11TransSocketINETConnect() can't get address for xenon:6000: hostname nor servname provided, or not known
Error: Can't open display: xenon:0.0

also when starting or stopping Xorg I either get:

bad display name "xenon:0" in "remove" command or
bad display name "xenon:0 in "list" command
Your laptop can't resolve the name "xenon".

I have my XDISPLAY env variable set using (in Bash):

DISPLAY=xenon:0.0 export DISPLAY

xenon is the name of the machine

I think part of the problem is the setting of the hostname. This laptop
runs off of DHCP and I am not really sure about what I should do for
setting the hostname. The manual says to set HOSTNAME="" in rc.conf if
using DHCP, but then I get the amnesiac message upon boot. Sendmail
doesn't like that either and hangs during the boot process. So I just
set it arbitrarily to "xenon"
Note that the capitalization of rc.conf variables is *significant*. The
real rc.conf variable that you have to set to avoid the "Amnesiac" name is:

hostname="xenon"

I have read manual pages, searched the archives, but I am really confused
about all of this. Thank you for any help.
All this can be resolved by using `/etc/hosts'. Just add your hostname
there and point it to the 127.0.0.1 address. Then all programs should be
able to resolve it.



Thanks Giorgios,

I think that I have the hostname problem resolved. rc.conf has hostname="xenon" and
/etc/hosts has: 127.0.0.1 localhost xenon

So now Xorg does not give errors on startup or shutdown like the
bad display name "xenon:0" in "remove" command or
bad display name "xenon:0 in "list" command

But when not setting the DISPLAY variable explicitely anywhere I still get the error:
"out of display lists" upon starting the program I want from xterm

But then setting DISPLAY=xenon:0.0 export DISPLAY and then executing the program then gives the error:

"Can't open display: xenon:0.0" so I guess I am back to square one.

Maybe I should call it a day and rest, haha.

Thanks,

Rob




Hi,

Sorry if you get this twice Rob as I mistakenly
sent my reply only to you without including the list

I had the same problem. Add this line to your
.xinitrc file

xdpyinfo -display :0.0

The hostname is not specified.

--Duane
--------------------------------

Hi Duane,

I put the line you suggest into .xinitrc, but I still have the same problem. I also went into /etc/hosts after
doing this and tried two ways of setting hosts:

1. 127.0.0.1 localhost xenon
2 127.0.0.1 localhost

But I am still seeing the "out of display lists" message.

It seems like the xdpyinfo command does not do anything.

The only thing that I have done which changes the error message is to set /etc/rc.conf hostname="xenon"
Then in .bash_profile put "DISPLAY=xenon:0.0 export DISPLAY"

Then I get the different error message:

"_X11TransSocketINETConnect() can't get address for xenon:6000: hostname nor servname provided, or not known
Error: Can't open display: xenon:0.0"

So I guess now I have tried every combination of the following:

setting hostname in rc.conf to either "" or "xenon"
setting "DISPLAY=xenon:0.0" or leaving that line out in .bash_profile

And finally, putting in xinitrc "xdpyinfo -display :0.0 or just leaving that line out.



So I am still baffled.


Sincerely,

Rob.

--

-----------------------
http://www.roblytle.org
Rob Lytle Home Page
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