XDMCP Remote login

[Doug Kuvaas]

OK, I have a couple Dell Optiplex 980s that I am trying to get set up for a
specialized application.  What I want to be able to do worked in Fedora 8
and earlier, but it has been broken since Fedora 9.

PC1 I want to set up so it queries another (HP-UX) machine for a graphical
CDE login to that system.  I have some success starting X manually using X
-query <remotehost> -from <localhost>, but I have not been able to get the
computer to boot up and display the CDE login.

So far I have tried a fresh Fedora 15 install with no window managers
installed, and after adding the remote host to /etc/hosts and /etc/X0.hosts,
as well as generating an xorg.conf file using Xorg :0 -configure, I am able
to get a CDE login using X -query <remotehost>

PC2, I want to set up to act like a "dumb terminal", in other words, all I
want it to do is show the blank root window and a cursor unless I am sending
an application to it from the HP-UX machine.  I can get the blank root
window that I am after using just X :0 -br -terminate, however I am not
getting a cursor.

PC2 is actually PC1 right now as I am just trying to establish the procedure
to get both done.

I do not need any kind of display manager to be installed, though they do
come in handy for some of the setup.

xorg.conf:

Section "ServerLayout"
Identifier     "X.org Configured"
Screen      0  "Screen0" 0 0
InputDevice    "Mouse0" "CorePointer"
InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath   "/usr/lib64/xorg/modules"
FontPath     "catalogue:/etc/X11/fontpath.d"
FontPath     "built-ins"
FontPath     "tcp/192.168.1.56:7000"
EndSection

Section "Module"
Load  "glx"
Load  "extmod"
Load  "record"
Load  "dbe"
Load  "dri2"
Load  "dri"
EndSection

Section "InputDevice"
Identifier  "Keyboard0"
Driver      "kbd"
EndSection

Section "InputDevice"
Identifier  "Mouse0"
Driver      "mouse"
Option    "Protocol" "auto"
Option    "Device" "/dev/input/mice"
Option    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier   "Monitor0"
VendorName   "Monitor Vendor"
ModelName    "Monitor Model"
EndSection

Section "Screen"
Identifier "Screen0"
Device     "Card0"
Monitor    "Monitor0"
SubSection "Display"
Viewport   0 0
Depth     1
EndSubSection
SubSection "Display"
Viewport   0 0
Depth     4
EndSubSection
SubSection "Display"
Viewport   0 0
Depth     8
EndSubSection
EndSection

Installation was a standard vanilla "Graphical" installation with no window
managers selected, and some of the development options selected. Kernel is
2.6.38.6-26.rc1.fc15.x86_64

The X11 application that these PCs will be running requires 8 bit color
depth and a resolution of 1280x1024.

[Doug Kuvaas]

On Tue, Jul 19, 2011 at 7:39 PM, Mikkel L. Ellertson
<mellertson(a)gmail.com&gt;wrote:

>  -----BEGIN PGP SIGNED MESSAGE-----
>  Hash: SHA1
>
>  On 07/19/2011 05:14 PM, Doug Kuvaas wrote:
>  > OK, so Xephyr (another Nested X server) does address the color depth
>  > issue we were seeing.  However, our application also does not like
>  > displaying graphics on screens other than :0.  Is there w way to
>  > start up Fedora/Gnome so that it uses a different screen number for X?
>
>  Well, if you were using xdm as the display manager, you could edit
>  /etc/X11/xdm/Xservers and change
>
>  :0 local /usr/bin/X :0
>
>  to
>
>  :1 local /usr/bin/X :1
>
>  I do not know it kdm or gdm uses that config file, or have their
>  own. I know they did use it way back when I needed to add an extra X
>  server or two. But I have not worked with this lately. I am sure
>  there are tools to configure them now. Someone else here is sure to
>  know, and post the info...
>
>  Mikkel
>  - --
>   Do not meddle in the affairs of dragons,
>  for thou art crunchy and taste good with Ketchup!
> >  -----BEGIN PGP SIGNATURE-----
> >  Version: GnuPG v1.4.11 (GNU/Linux)
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>  
That has been the problem I've been running into with newer versions of
Fedora.  Xorg and company have been moving towards a "work out of the box"
philosophy and have done away with a lot of the config files in favor of
dynamically generating these so things just work, and a simple hardware
change does not break the OS as often.  I've been trying to find where Xorg
is actually run, so I can get it to run the way I want.

Now that I have played with Xephyr a little bit, I have found that I
actually prefer this configuration for the way we are using these computers,
as opposed to just starting X with no window manager or just querying a
remote host.

Thanks for all the help so far.

Doug

[Mikkel L. Ellertson]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/19/2011 05:14 PM, Doug Kuvaas wrote:
>  OK, so Xephyr (another Nested X server) does address the color depth
>  issue we were seeing.  However, our application also does not like
>  displaying graphics on screens other than :0.  Is there w way to
>  start up Fedora/Gnome so that it uses a different screen number for X? 
Well, if you were using xdm as the display manager, you could edit
/etc/X11/xdm/Xservers and change

:0 local /usr/bin/X :0

to

:1 local /usr/bin/X :1

I do not know it kdm or gdm uses that config file, or have their
own. I know they did use it way back when I needed to add an extra X
server or two. But I have not worked with this lately. I am sure
there are tools to configure them now. Someone else here is sure to
know, and post the info...

Mikkel
- -- 
  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.11 (GNU/Linux)
>
> iEYEARECAAYFAk4mI80ACgkQqbQrVW3JyMRbZACfU3mbbb22LyiV9inGxrPsoHzD
> PQoAnRqPG0l1M7oBv59/JW9DL2wbL8iz
> =P7WT
> -----END PGP SIGNATURE-----

[Patrick Lists]

On 07/20/2011 12:14 AM, Doug Kuvaas wrote:
>  OK, so Xephyr (another Nested X server) does address the color depth
>  issue we were seeing.  However, our application also does not like
>  displaying graphics on screens other than :0.  Is there w way to start
>  up Fedora/Gnome so that it uses a different screen number for X? 
This would start X on screen 1:

$ startx -- :1

For more info:

$ man startx

Regards,
Patrick

[Doug Kuvaas]

All right, my woes for this beast are down to one.  For some reason, if I
try to run X directly in 8 bit color mode, I get only greyscale output.
 Because the legacy application I am running doesn't work properly with
higher color depths (printing of displays doesn't work), I cannot run at a
higher color depth easily without re-writing the application I am running.

Command is Xorg :0 -terminate -br +bs -depth 8

The display driver is intel I830

Anyone have any ideas?

On Wed, Jul 13, 2011 at 4:06 AM, Alain Spineux <aspineux(a)gmail.com&gt; wrote:

>  On Tue, Jul 12, 2011 at 11:30 PM, Doug Kuvaas
> <doug.kuvaas(a)gmail.com&gt;
>  wrote:
>  > OK, I have a couple Dell Optiplex 980s that I am trying to get set up for
>  a
>  > specialized application.  What I want to be able to do worked in Fedora 8
>  > and earlier, but it has been broken since Fedora 9.
>  > PC1 I want to set up so it queries another (HP-UX) machine for a
>  graphical
>  > CDE login to that system.  I have some success starting X manually using
>  X
>  > -query <remotehost> -from <localhost>, but I have not been able to get
>  the
>  > computer to boot up and display the CDE login.
>  > So far I have tried a fresh Fedora 15 install with no window managers
>  > installed, and after adding the remote host to /etc/hosts and
>  /etc/X0.hosts,
>  > as well as generating an xorg.conf file using Xorg :0 -configure, I am
>  able
>  > to get a CDE login using X -query <remotehost>
>
>  maybe try to add this to your /etc/gdm/custom.conf file
>
>  [xdmcp]
>  Enable=true (or 1 in some distributions)
>
>  > PC2, I want to set up to act like a "dumb terminal", in other words, all
>  I
>  > want it to do is show the blank root window and a cursor unless I am
>  sending
>  > an application to it from the HP-UX machine.  I can get the blank root
>  > window that I am after using just X :0 -br -terminate, however I am not
>  > getting a cursor.
>
>  X don't display cursor anymore , use -retro
>
>
>  > PC2 is actually PC1 right now as I am just trying to establish the
>  procedure
>  > to get both done.
>  > I do not need any kind of display manager to be installed, though they do
>  > come in handy for some of the setup.
>  > xorg.conf:
>  > Section "ServerLayout"
>  > Identifier     "X.org Configured"
>  > Screen      0  "Screen0" 0 0
>  > InputDevice    "Mouse0" "CorePointer"
>  > InputDevice    "Keyboard0" "CoreKeyboard"
>  > EndSection
>  > Section "Files"
>  > ModulePath   "/usr/lib64/xorg/modules"
>  > FontPath     "catalogue:/etc/X11/fontpath.d"
>  > FontPath     "built-ins"
>  > FontPath     "tcp/192.168.1.56:7000"
>  > EndSection
>  > Section "Module"
>  > Load  "glx"
>  > Load  "extmod"
>  > Load  "record"
>  > Load  "dbe"
>  > Load  "dri2"
>  > Load  "dri"
>  > EndSection
>  > Section "InputDevice"
>  > Identifier  "Keyboard0"
>  > Driver      "kbd"
>  > EndSection
>  > Section "InputDevice"
>  > Identifier  "Mouse0"
>  > Driver      "mouse"
>  > Option    "Protocol" "auto"
>  > Option    "Device" "/dev/input/mice"
>  > Option    "ZAxisMapping" "4 5 6 7"
>  > EndSection
>  > Section "Monitor"
>  > Identifier   "Monitor0"
>  > VendorName   "Monitor Vendor"
>  > ModelName    "Monitor Model"
>  > EndSection
>  > Section "Screen"
>  > Identifier "Screen0"
>  > Device     "Card0"
>  > Monitor    "Monitor0"
>  > SubSection "Display"
>  > Viewport   0 0
>  > Depth     1
>  > EndSubSection
>  > SubSection "Display"
>  > Viewport   0 0
>  > Depth     4
>  > EndSubSection
>  > SubSection "Display"
>  > Viewport   0 0
>  > Depth     8
>  > EndSubSection
>  > EndSection
>  > Installation was a standard vanilla "Graphical" installation with no
>  window
>  > managers selected, and some of the development options selected. Kernel
>  is
>  > 2.6.38.6-26.rc1.fc15.x86_64
>  > The X11 application that these PCs will be running requires 8 bit color
>  > depth and a resolution of 1280x1024.
>  > --
>  > users mailing list
>  > users(a)lists.fedoraproject.org
>  > To unsubscribe or change subscription options:
>  > https://admin.fedoraproject.org/mailman/listinfo/users
>  > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>  >
>  >
>
>
>
>  --
>  Alain Spineux                   |  aspineux gmail com
>  Monitor your iT & Backups |  http://www.magikmon.com
>  Free Backup front-end       | http://www.magikmon.com/mksbackup
>  Your email 100% available |  http://www.emailgency.com
>  --
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>

[Mikkel L. Ellertson]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/14/2011 09:46 AM, Doug Kuvaas wrote:
>  I have not looked into using XNest, but it might be worth checking
> out.
>  
>  Is it set up in a similar manner as Xorg?  These computers will have
>  touchscreens for control and that is the one issue that I have that
>  has the highest priority.  If I can't get the color depth thing
>  figured out, it may be easier to re-write the portion of the
>  application that requires 8-bit color depth than continuing to fight
>  with the video card.
>  
>  Thanks
>   
It supports Xorg configuration, but also adds some more options. I
do not see any problem with the touchscreen. If I remember
correctly, it inherits all the devices from the base X server. I
would install it, and read the man page. It should answer most of
your questions.

Mikkel
- -- 

A:  Because it messes up the order in which people normally read text.
Q:  Why is top-posting a bad thing?

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[Doug Kuvaas]

I have not looked into using XNest, but it might be worth checking out.

Is it set up in a similar manner as Xorg?  These computers will have
touchscreens for control and that is the one issue that I have that has the
highest priority.  If I can't get the color depth thing figured out, it may
be easier to re-write the portion of the application that requires 8-bit
color depth than continuing to fight with the video card.

Thanks

On Thu, Jul 14, 2011 at 9:09 AM, Mikkel L. Ellertson
<mellertson(a)gmail.com&gt;wrote:

>  -----BEGIN PGP SIGNED MESSAGE-----
>  Hash: SHA1
>
>  On 07/13/2011 01:43 PM, Doug Kuvaas wrote:
>  > All right, my woes for this beast are down to one.  For some reason,
>  > if I try to run X directly in 8 bit color mode, I get only greyscale
>  > output.  Because the legacy application I am running doesn't work
>  > properly with higher color depths (printing of displays doesn't
>  > work), I cannot run at a higher color depth easily without
>  > re-writing the application I am running.
>  >
>  > Command is Xorg :0 -terminate -br +bs -depth 8
>  >
>  > The display driver is intel I830
>  >
>  > Anyone have any ideas?
>  >
>  I am coming in late on this, but have you thought of using xnest?
>  You could give the application its own X server running inside your
>  normal X server. It handles lower resolutions/colors then the main
>  server.
>
>  Mikkel
>  - --
>
>   Do not meddle in the affairs of dragons,
>  for thou art crunchy and taste good with Ketchup!
> >  -----BEGIN PGP SIGNATURE-----
> >  Version: GnuPG v1.4.11 (GNU/Linux)
> >
> >  iEYEARECAAYFAk4e+KgACgkQqbQrVW3JyMQDuQCfQP7aFQIHW9zX3RRXs3mllRrF
> >  KwEAnRx0gRRNaJmrwLjPOAO+sRlhLL5M
> >  =4cCg
> >  -----END PGP SIGNATURE----- 
>  --
>  users mailing list
>  users(a)lists.fedoraproject.org
>  To unsubscribe or change subscription options:
>  https://admin.fedoraproject.org/mailman/listinfo/users
>  Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>

[Mikkel L. Ellertson]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/13/2011 01:43 PM, Doug Kuvaas wrote:
>  All right, my woes for this beast are down to one.  For some reason,
>  if I try to run X directly in 8 bit color mode, I get only greyscale
>  output.  Because the legacy application I am running doesn't work
>  properly with higher color depths (printing of displays doesn't
>  work), I cannot run at a higher color depth easily without
>  re-writing the application I am running.  
>  
>  Command is Xorg :0 -terminate -br +bs -depth 8
>  
>  The display driver is intel I830
>  
>  Anyone have any ideas?
>   
I am coming in late on this, but have you thought of using xnest?
You could give the application its own X server running inside your
normal X server. It handles lower resolutions/colors then the main
server.

Mikkel
- -- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.11 (GNU/Linux)
>
> iEYEARECAAYFAk4e+KgACgkQqbQrVW3JyMQDuQCfQP7aFQIHW9zX3RRXs3mllRrF
> KwEAnRx0gRRNaJmrwLjPOAO+sRlhLL5M
> =4cCg
> -----END PGP SIGNATURE-----

[Doug Kuvaas]

On Thu, Jul 14, 2011 at 9:09 AM, Mikkel L. Ellertson
<mellertson(a)gmail.com&gt;wrote:

>  -----BEGIN PGP SIGNED MESSAGE-----
>  Hash: SHA1
>
>  On 07/13/2011 01:43 PM, Doug Kuvaas wrote:
>  > All right, my woes for this beast are down to one.  For some reason,
>  > if I try to run X directly in 8 bit color mode, I get only greyscale
>  > output.  Because the legacy application I am running doesn't work
>  > properly with higher color depths (printing of displays doesn't
>  > work), I cannot run at a higher color depth easily without
>  > re-writing the application I am running.
>  >
>  > Command is Xorg :0 -terminate -br +bs -depth 8
>  >
>  > The display driver is intel I830
>  >
>  > Anyone have any ideas?
>  >
>  I am coming in late on this, but have you thought of using xnest?
>  You could give the application its own X server running inside your
>  normal X server. It handles lower resolutions/colors then the main
>  server.
>
>  Mikkel
>  - --
>
>   Do not meddle in the affairs of dragons,
>  for thou art crunchy and taste good with Ketchup!
> >  -----BEGIN PGP SIGNATURE-----
> >  Version: GnuPG v1.4.11 (GNU/Linux)
> >
> >  iEYEARECAAYFAk4e+KgACgkQqbQrVW3JyMQDuQCfQP7aFQIHW9zX3RRXs3mllRrF
> >  KwEAnRx0gRRNaJmrwLjPOAO+sRlhLL5M
> >  =4cCg
> >  -----END PGP SIGNATURE----- 
>  --
>  users mailing list
>  users(a)lists.fedoraproject.org
>  To unsubscribe or change subscription options:
>  https://admin.fedoraproject.org/mailman/listinfo/users
>  Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>  
OK, so Xephyr (another Nested X server) does address the color depth issue
we were seeing.  However, our application also does not like displaying
graphics on screens other than :0.  Is there w way to start up Fedora/Gnome
so that it uses a different screen number for X?

[Alain Spineux]

On Tue, Jul 12, 2011 at 11:30 PM, Doug Kuvaas <doug.kuvaas(a)gmail.com&gt; wrote:
>  OK, I have a couple Dell Optiplex 980s that I am trying to get set up
> for a
>  specialized application.  What I want to be able to do worked in Fedora 8
>  and earlier, but it has been broken since Fedora 9.
>  PC1 I want to set up so it queries another (HP-UX) machine for a graphical
>  CDE login to that system.  I have some success starting X manually using X
>  -query <remotehost> -from <localhost>, but I have not been able to get the
>  computer to boot up and display the CDE login.
>  So far I have tried a fresh Fedora 15 install with no window managers
>  installed, and after adding the remote host to /etc/hosts and /etc/X0.hosts,
>  as well as generating an xorg.conf file using Xorg :0 -configure, I am able
>  to get a CDE login using X -query <remotehost> 
maybe try to add this to your /etc/gdm/custom.conf file

[xdmcp]
Enable=true (or 1 in some distributions)

>  PC2, I want to set up to act like a "dumb terminal", in
> other words, all I
>  want it to do is show the blank root window and a cursor unless I am sending
>  an application to it from the HP-UX machine.  I can get the blank root
>  window that I am after using just X :0 -br -terminate, however I am not
>  getting a cursor. 
X don't display cursor anymore , use -retro


>  PC2 is actually PC1 right now as I am just trying to establish the
> procedure
>  to get both done.
>  I do not need any kind of display manager to be installed, though they do
>  come in handy for some of the setup.
>  xorg.conf:
>  Section "ServerLayout"
>  Identifier     "X.org Configured"
>  Screen      0  "Screen0" 0 0
>  InputDevice    "Mouse0" "CorePointer"
>  InputDevice    "Keyboard0" "CoreKeyboard"
>  EndSection
>  Section "Files"
>  ModulePath   "/usr/lib64/xorg/modules"
>  FontPath     "catalogue:/etc/X11/fontpath.d"
>  FontPath     "built-ins"
>  FontPath     "tcp/192.168.1.56:7000"
>  EndSection
>  Section "Module"
>  Load  "glx"
>  Load  "extmod"
>  Load  "record"
>  Load  "dbe"
>  Load  "dri2"
>  Load  "dri"
>  EndSection
>  Section "InputDevice"
>  Identifier  "Keyboard0"
>  Driver      "kbd"
>  EndSection
>  Section "InputDevice"
>  Identifier  "Mouse0"
>  Driver      "mouse"
>  Option    "Protocol" "auto"
>  Option    "Device" "/dev/input/mice"
>  Option    "ZAxisMapping" "4 5 6 7"
>  EndSection
>  Section "Monitor"
>  Identifier   "Monitor0"
>  VendorName   "Monitor Vendor"
>  ModelName    "Monitor Model"
>  EndSection
>  Section "Screen"
>  Identifier "Screen0"
>  Device     "Card0"
>  Monitor    "Monitor0"
>  SubSection "Display"
>  Viewport   0 0
>  Depth     1
>  EndSubSection
>  SubSection "Display"
>  Viewport   0 0
>  Depth     4
>  EndSubSection
>  SubSection "Display"
>  Viewport   0 0
>  Depth     8
>  EndSubSection
>  EndSection
>  Installation was a standard vanilla "Graphical" installation with no window
>  managers selected, and some of the development options selected. Kernel is
>  2.6.38.6-26.rc1.fc15.x86_64
>  The X11 application that these PCs will be running requires 8 bit color
>  depth and a resolution of 1280x1024.
>  --
>  users mailing list
>  users(a)lists.fedoraproject.org
>  To unsubscribe or change subscription options:
>  https://admin.fedoraproject.org/mailman/listinfo/users
>  Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>
>  


-- 
Alain Spineux                   |  aspineux gmail com
Monitor your iT & Backups |  http://www.magikmon.com
Free Backup front-end       | http://www.magikmon.com/mksbackup
Your email 100% available |  http://www.emailgency.com