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Bug 1130661 - Unable to connect via XDMCP using Reflection X Advantage 5.0
Summary: Unable to connect via XDMCP using Reflection X Advantage 5.0
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: xorg-x11-xdm
Version: 7.0
Hardware: x86_64
OS: Windows
medium
medium
Target Milestone: rc
: ---
Assignee: Karol Herbst
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks: 1420851
TreeView+ depends on / blocked
 
Reported: 2014-08-15 20:10 UTC by Ken Chapin
Modified: 2023-09-14 02:45 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-12-15 07:31:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
sosreport (7.90 MB, application/octet-stream)
2014-08-15 20:10 UTC, Ken Chapin 		no flags Details
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Description Ken Chapin 2014-08-15 20:10:39 UTC 
Created attachment 927268 [details]
sosreport

Description of problem:


Version-Release number of selected component (if applicable):
xorg-x11-server-Xorg-1.15.0-7.el7.x86_64
Reflection X Advantage server version 5.0.906

How reproducible:
100% when using Reflection X

Steps to Reproduce:
1. Configure to use XDMCP (see additional info)
2. Attempt to connect using Reflection X server
3.

Actual results:
- remote session flashes between grey Xorg background and a nondescript graphical error
- Have been able to successfully connect using Xorg from another RHEL 7 system

Expected results:
- Successful connection presented with Gnome Greeter

Additional info:
Configuration:
# GDM configuration storage

[daemon]

[xdmcp]
Enable=true
Port=177
HonorIndirect=true
DisplaysPerHost=1

[security]
DisallowTCP=false
AllowRemoteRoot=true

[greeter]
IncludeAll=true

[chooser]

[debug]
Enable=true

Firewall has been verified not to be the issue
Confirmed that Reflection X is using GLX extension

Seems to be an issue with GLX based on the following logs:

Aug  1 15:12:04 gusrhel7test gnome-session[2338]: DEBUG(+): GsmSystemd: received logind signal: SessionNew Aug  1 15:12:04 gusrhel7test gnome-session[2338]: DEBUG(+): GsmSystemd: ignoring SessionNew signal Aug  1 15:12:04 gusrhel7test systemd: Started Session c2 of user gdm.
Aug  1 15:12:04 gusrhel7test /usr/bin/dbus-launch: gnome-session-is-accelerated: No composite extension.
Aug  1 15:12:04 gusrhel7test /usr/bin/dbus-launch: gnome-session-check-accelerated: Helper exited with code 256 Aug  1 15:12:09 gusrhel7test /usr/bin/dbus-launch: gnome-session-is-accelerated: No composite extension.
Aug  1 15:12:09 gusrhel7test /usr/bin/dbus-launch: gnome-session-check-accelerated: Helper exited with code 256 Aug  1 15:12:09 gusrhel7test /usr/bin/dbus-launch: ** (process:2703): WARNING **: software acceleration check failed: Child process exited with code 1 Aug  1 15:12:13 gusrhel7test /usr/bin/dbus-launch: (gnome-session:2703): Gdk-WARNING **: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server 10.32.8.30:0.
Aug  1 15:12:13 gusrhel7test /usr/bin/dbus-launch: (gnome-session-failed:2725): Gdk-WARNING **: gnome-session-failed: Fatal IO error 11 (Resource temporarily unavailable) on X server 10.32.8.30:0.
Aug  1 15:12:13 gusrhel7test gdm: GLib-GObject: g_object_ref: assertion `object->ref_count > 0' failed Aug  1 15:12:13 gusrhel7test gdm: GLib-GObject: g_object_unref: assertion `object->ref_count > 0' failed Aug  1 15:12:13 gusrhel7test systemd: Failed to mark scope session-c2.scope as abandoned : Stale file handle Aug  1 15:12:13 gusrhel7test systemd-logind: Removed session c2.

Suspect Gnome-session failure:
There is no GLX protocol being sent to Reflection X.  The gnome-session-is-accelerated doesn't find the Composite extension and quits before it starts snooping for the GLX extension or anything about the OpenGL renderer.
Comment 3 Hans de Goede 2014-09-01 10:12:49 UTC 
gnome-shell 3.8 (such as shipped in RHEL-7) and later not longer support a 2d fallback mode. Since gnome-shell is a compositing window manager it needs not just glx but a working composite extension.

The problem seems to be that Reflection X Advantage server does not implement the composite extension. The only way I see to fix this issue is for the Reflection X Advantage server to implement the composite extension.
Comment 4 Hans de Goede 2016-03-16 15:44:42 UTC 
Hi,

(In reply to Hans de Goede from comment #3)
> gnome-shell 3.8 (such as shipped in RHEL-7) and later not longer support a
> 2d fallback mode. Since gnome-shell is a compositing window manager it needs
> not just glx but a working composite extension.
> 
> The problem seems to be that Reflection X Advantage server does not
> implement the composite extension. The only way I see to fix this issue is
> for the Reflection X Advantage server to implement the composite extension.

Ken, Any status update on this ?

Regards,

Hans
Comment 7 RHEL Program Management 2020-12-15 07:31:06 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Comment 8 Red Hat Bugzilla 2023-09-14 02:45:47 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days
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