Re: Multi-user VNC on F23 and later

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Ed Greshko wrote:

>> HOWEVER, when I connect with "vncviewer server::5901", I get a blank
>> screen with a momentary F8 prompt. I do not see the normal greeting
>> screen. Something is still missing.

> Then I noticed one thing which seems off or odd do me. 
> 
> When you do "systemctl -l status xvnc.socket" you system is outputting
> 2 lines.
> 
> Jul 10 14:10:50 server systemd[1]: Listening on XVNC Server.
> Jul 10 14:10:50 server systemd[1]: Starting XVNC Server.
> 
> My system outputs only one.
> 
> Jul 11 06:48:30 f25f.greshko.com systemd[1]: Listening on XVNC Server.

That is evidently due to something wrong during boot. After a fresh
boot, here's what I see.

[root@server ~]# systemctl status xvnc.socket
  xvnc.socket - XVNC Server
   Loaded: loaded (/etc/systemd/system/xvnc.socket; enabled; vendor
preset: disabled)
   Active: failed (Result: resources)
   Listen: 10.76.185.91:5901 (Stream)
 Accepted: 0; Connected: 0

Jul 10 16:57:13 server systemd[1]: xvnc.socket: Failed to listen on
sock...ss
Jul 10 16:57:13 server systemd[1]: Failed to listen on XVNC Server.
Jul 10 16:57:13 server systemd[1]: xvnc.socket: Unit entered failed state.
Jul 10 16:57:13 server systemd[1]: Starting XVNC Server.
Hint: Some lines were ellipsized, use -l to show in full.
[root@server ~]# systemctl start xvnc.socket
[root@server ~]# systemctl status xvnc.socket
  xvnc.socket - XVNC Server
   Loaded: loaded (/etc/systemd/system/xvnc.socket; enabled; vendor
preset: disabled)
   Active: active (listening) since Mon 2017-07-10 17:04:20 PDT; 1s ago
   Listen: 10.76.185.91:5901 (Stream)
 Accepted: 0; Connected: 0

Jul 10 17:04:20 server systemd[1]: Listening on XVNC Server.
Jul 10 17:04:20 server systemd[1]: Starting XVNC Server.

> Without any clients connected/connecting can you check to see if Xvnc is
> running?  I only have a running /usr/bin/Xvnc when a client is connected.

Without a connection, "ps -ef | grep vnc" shows only the grep. During an
attempted connection, Xvnc is running with all the right options.

> Also, check /var/log/kdm.log to see if there are errors.

/var/log/kdm.log just tells me that useful messages are in syslog. In
there, greping for kdm, I see:

Jul 10 16:56:07 server audit: SERVICE_START pid=1 uid=0 auid=4294967295
ses=4294967295 msg='unit=kdm comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jul 10 16:56:07 server audit: SERVICE_STOP pid=1 uid=0 auid=4294967295
ses=4294967295 msg='unit=kdm comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jul 10 16:57:27 server audit: SERVICE_START pid=1 uid=0 auid=4294967295
ses=4294967295 msg='unit=kdm comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jul 10 16:57:27 server kdm[1676]: plymouth is running
Jul 10 16:57:27 server kdm[1676]: plymouth is active on VT 1, reusing for :0
Jul 10 16:57:27 server kdm[1676]: plymouth should quit after server startup
Jul 10 16:57:30 server kdm[1676]: Quitting Plymouth with transition
Jul 10 16:57:30 server kdm[1676]: Is Plymouth still running? no

And when I try to connect,

Jul 10 17:05:49 server kdm: fe80::3617:ebff:feeb:6b02:1[7472]: Cannot
connect to fe80::3617:ebff:feeb:6b02:1, giving up
Jul 10 17:05:49 server kdm[1676]: Display fe80::3617:ebff:feeb:6b02:1
cannot be opened
-- 
 Dave Close

 "Age is a very high price to pay for maturity." -- Tom Stoppard
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