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Bug 352491 - "gdmflexiserver -n" doesn't work
"gdmflexiserver -n" doesn't work
Product: Fedora
Classification: Fedora
Component: gdm (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Ray Strode [halfline]
Fedora Extras Quality Assurance
Depends On:
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Reported: 2007-10-25 11:18 EDT by Jeff Needle
Modified: 2007-11-30 17:12 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-11-05 00:19:08 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Jeff Needle 2007-10-25 11:18:10 EDT
Description of problem:

gdmflexiserver -n just gives me an error, "The nested X server is not available,
or GDM is badly configured. Please install the Xnest package in order to use the
nested login."

$ gdmflexiserver -dd -n

gdmflexiserver[2941]: DEBUG: Sending command: 'VERSION'

gdmflexiserver[2941]: DEBUG:   Got response: 'GDM 2.19.8'

gdmflexiserver[2941]: DEBUG: Sending command: 'AUTH_LOCAL

gdmflexiserver[2941]: DEBUG:   Got response: 'OK'

gdmflexiserver[2941]: DEBUG: Sending command: 'FLEXI_XNEST :0 3276
d83922225c358cec8790f8c411c583f4 /tmp/.gdmTLOZYT'

gdmflexiserver[2941]: DEBUG:   Got response: 'ERROR 6 No server binary'

gdmflexiserver[2941]: DEBUG: Sending command: 'CLOSE'

Version-Release number of selected component (if applicable):

$ rpm -qf `which Xnest`


How reproducible:
Happens on 2 i386 rawhide machines 100% of the time.  gdmflexiserver without the
-n works as expected.  Disabling SELinux doesn't have any effect.
Comment 1 Ray Strode [halfline] 2007-10-25 12:15:20 EDT

yum install /usr/bin/Xephyr

fix things?
Comment 2 Jeff Needle 2007-10-25 12:29:38 EDT
No, same behavior.
Comment 3 Matthias Clasen 2007-10-25 14:19:10 EDT
Could that be because of 


in /usr/share/gdm/defaults.conf ?
Comment 4 Jeff Needle 2007-10-25 14:32:53 EDT
Tried setting that to both Xephyr and Xnest (both of which are installed) and it
didn't make a difference.
Comment 5 Matthias Clasen 2007-10-25 19:45:10 EDT
I set it to 

Xnest=/usr/bin/Xnest -audit 0 -name Xnest

and now it started to work
Comment 6 Jeff Needle 2007-10-25 20:21:14 EDT
Argh.  Yeah, that works.  /usr/X11/bin/Xnest doesn't.  Because it doesn't exist.
 Which is why setting it to that isn't a useful test.

So, defaults.conf needs a tweak.  Easy enough.
Comment 7 Matthias Clasen 2007-10-25 20:56:58 EDT
defaults.conf is untouchable. Edit /etc/gdm/custom.conf instead.
The only one who can touch defaults.conf is Ray. 
Ray - do we want to set the Xnest command in defaults.conf ?
Comment 8 Ray Strode [halfline] 2007-10-26 02:07:05 EDT
actually gdm has no ACL on it.  Anyone can touch defaults.conf.

I can do it though.  Makes a lot of sense to fix this before F8.
Comment 9 Matthias Clasen 2007-11-05 00:19:08 EST
It appears that we are setting Xnest in defaults.conf now

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