Bug 2655

Summary:	gdm fails to honor XDMCP requests!!
Product:	[Retired] Red Hat Linux	Reporter:	Chris Evans <chris>
Component:	gdm	Assignee:	David Mason <dcm>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	high	Docs Contact:
Priority:	medium
Version:	6.0	CC:	bob_b, imm, sh1, simon
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1999-08-31 13:37:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Chris Evans 1999-05-08 13:32:51 UTC

Hi

Install RH6.0, choose to "launch X by default" during the
install.

When you boot the new system, GNOME pops up with a login
dialog. So far so good.

Now switch to a virtual console and type

startx -- -query 127.0.0.1 :1

This command starts X but FAILS to get to a login screen!
This is quite serious :-)

Note, if I change /etc/X11/prefdm so it points to "xdm", the
above command works fine.

Another note: when using gdm, traffic sent to the XDMCP port
queues up and is never read. The port should either be
fixed, or disabled- if it isn't used it's a security concern
:-)

Comment 1 Michael K. Johnson 1999-05-10 22:47:59 UTC

The workaround for now is to enable debugging by changing
Enable=0 to Enable=1 in the [debug] section of /etc/X11/gdm/gdm.conf.
This is most certainly a workaround and not a bugfix...

The workaround does not fix the fact that it listens when not
configured to do xdmcp.

------- Additional Comments From   08/24/99 10:31 -------
A little extra info:  GDM will respond to XDMCP requests when they
are DIRECT or QUERY requests (sent to the specified host).   It fails
when the requests are of type BROADCAST.

Comment 2 Preston Brown 1999-08-31 13:37:59 UTC

*** This bug has been marked as a duplicate of 2614 ***

------- Additional Comments From   10/20/99 17:24 -------
Contrary to the orginal comments from Redhat, my workstation is not
responding to 'DIRECT or QUERY requests'.  I just picked up 6.1 last
night hoping that this (and other problems) were resolved and it is
not.  I have not tried the listed workaround.

-Bob

Comment 3 openshift-github-bot 2015-06-04 04:47:56 UTC

Commit pushed to master at https://github.com/openshift/origin

https://github.com/openshift/origin/commit/be2087170132387bd4771c103a774b5ce8f93ead
Fix issue#2655; bz1225410; rebase openshift-sdn Godeps