unlim

[unlim]

Servers has Intel Celeron G3900 with builtin graphic.
I’m not sure about headless – monitor was attached from time to time, it does not affect this issue.

[unlim]

Server – Win10.

[unlim]

I fixed this by using hardware videocard emulator.
But not always we have physical access to servers…

[unlim]

It’s too complicated.
I believe I won’t tune this VDS anymore.

 

Thank you!

[unlim]

I change that line and now able to connect.

 

Thank you!

[unlim]

I see.
But seems, I do that already – I disable startup script and restart whole VDS.
What should I do more ?

# ps -elfH
F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
5 S root         1     0  0  80   0 –  4820 poll_s Jan06 ?        00:00:00 init
1 S root         2     1  0  80   0 –     0 kthrea Jan06 ?        00:00:00   [kthreadd/10006]
1 S root         3     2  0  80   0 –     0 kthrea Jan06 ?        00:00:00     [khelper]
5 S root       459     1  0  80   0 – 44418 poll_s Jan06 ?        00:00:03   /sbin/rsyslogd -i /var/run/syslogd.pid -c 5
5 S root       726     1  0  80   0 –  1028 n_tty_ Jan06 ?        00:00:00   /sbin/mingetty console
5 S root       727     1  0  80   0 –  1028 n_tty_ Jan06 ?        00:00:00   /sbin/mingetty tty2
5 S root       721     1  0  80   0 – 16577 poll_s Jan06 ?        00:00:01   /usr/sbin/sshd
5 S root       687     1  0  80   0 –  5289 hrtime Jan06 ?        00:00:00   /usr/sbin/atd
5 S smmsp      659     1  0  80   0 – 19579 sys_pa Jan06 ?        00:00:00   sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue
5 S root       672     1  0  80   0 –  5009 hrtime Jan06 ?        00:00:00   crond
5 S root       628     1  0  80   0 – 16636 skb_wa Jan06 ?        00:00:00   /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
5 S root       629   628  0  80   0 – 16636 fcntl_ Jan06 ?        00:00:00     /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
5 S root       650     1  0  80   0 – 22758 poll_s Jan06 ?        00:00:02   sendmail: accepting connections
5 S root       616     1  0  80   0 –  5441 poll_s Jan06 ?        00:00:00   xinetd -stayalive -pidfile /var/run/xinetd.pid
5 S 68         539     1  0  80   0 –  8911 poll_s Jan06 ?        00:00:00   hald
5 S root       540   539  0  80   0 –  5111 poll_s Jan06 ?        00:00:00     hald-runner
5 S root       541     1  0  80   0 – 11260 poll_s Jan06 ?        00:00:00   /usr/sbin/wpa_supplicant -c /etc/wpa_supplicant/wpa_supplicant.conf -B -u -f /var/log/wpa_supplicant.log -P /var/run
5 S root       516     1  0  80   0 – 23070 ep_pol Jan06 ?        00:00:00   cupsd -C /etc/cups/cupsd.conf
5 S root       494     1  0  80   0 – 23142 poll_s Jan06 ?        00:00:00   NetworkManager –pid-file=/var/run/NetworkManager/NetworkManager.pid
5 S dbus       481     1  0  80   0 –  5403 poll_s Jan06 ?        00:00:00   dbus-daemon –system
5 S nx         218     1  0  80   0 – 149459 poll_s Jan06 ?       00:00:03   /usr/NX/bin/nxserver.bin root 1 –daemon
5 S nx         765   218  0  80   0 – 139490 futex_ Jan06 ?       00:00:00     /usr/NX/bin/nxd
5 S root       498     1  0  80   0 – 14521 poll_s Jan06 ?        00:00:00   /usr/sbin/modem-manager
5 S root       144     1  0  80   0 –  2679 poll_s Jan06 ?        00:00:00   /sbin/udevd -d
0 S root     12965     1  0  80   0 –  2873 do_wai 15:21 pts/0    00:00:00   -bash
0 R root     12996 12965  0  80   0 –  3342 –      15:21 pts/0    00:00:00     ps -elfH

[unlim]

I see.

I said earlier that I already tried to run VDS w/o that script – w/o Xvfb.
And problem not gone.
I just tried one more time – problem still appear.

And I do not see “Cannot detect any display running. Do you want …” in any case.
Earlier, before this problem, I saw that message (it appears within client interface).
But now, when I have this problem, I do not see this message (“Cannot detect…”) at all.

[unlim]

Unfortunately, I can’t test other conf.
I have win10 (local) and CentOS6 (VDS).

Yes, I use NX client and server both 6.0.66.

"C:/Users/username/.nx/R-"numbers"/session" log attached.


 

Attachments:

1. 1.txt

[unlim]

There is no /home/user/.xsession-error.

 

How exactly can I “solution with disabled xvfb server and allow NoMachine to create the desktop” ?

[unlim]

OK, I perform those instructions from link you suggested.

They didn’t help.

Pls note that this VDS was working for years. And problem start to happen for few days only (maybe from last NX update).

Here are the output:

# yum update -y
Loaded plugins: fastestmirror, priorities, refresh-packagekit
Setting up Update Process
Determining fastest mirrors
…
extras                                                                                                                                                                    | 3.4 kB     00:00
updates                                                                                                                                                                   | 3.4 kB     00:00
vz-base                                                                                                                                                                   |  951 B     00:00
vz-updates                                                                                                                                                                |  951 B     00:00
No Packages marked for Update

 

# yum groupinstall -y “Desktop”
Loaded plugins: fastestmirror, priorities, refresh-packagekit
Setting up Group Process
Loading mirror speeds from cached hostfile
…
base/group_gz                                                                                                                                                             | 226 kB     00:00
Package nautilus-2.28.4-26.el6.x86_64 already installed and latest version
Package 1:control-center-2.28.1-41.el6.x86_64 already installed and latest version
Package gvfs-smb-1.4.3-27.el6.x86_64 already installed and latest version
Package xdg-user-dirs-gtk-0.8-7.el6.x86_64 already installed and latest version
Package gnome-power-manager-2.28.3-7.el6_4.x86_64 already installed and latest version
Package alsa-plugins-pulseaudio-1.1.0-1.el6.x86_64 already installed and latest version
Package at-spi-1.28.1-2.el6.centos.x86_64 already installed and latest version
Package 1:gdm-2.30.4-67.el6.x86_64 already installed and latest version
Package notification-daemon-0.5.0-1.el6.x86_64 already installed and latest version
Package 1:NetworkManager-0.8.1-113.el6.x86_64 already installed and latest version
Package 1:NetworkManager-gnome-0.8.1-113.el6.x86_64 already installed and latest version
Package polkit-gnome-0.96-4.el6.x86_64 already installed and latest version
Package gnome-session-2.28.0-24.el6.x86_64 already installed and latest version
Package gnome-terminal-2.31.3-11.el6_6.x86_64 already installed and latest version
Package gnome-panel-2.30.2-16.el6.x86_64 already installed and latest version
Package gvfs-fuse-1.4.3-27.el6.x86_64 already installed and latest version
Package metacity-2.28.0-23.el6.x86_64 already installed and latest version
Package gnome-screensaver-2.28.3-28.el6.x86_64 already installed and latest version
Package yelp-2.28.1-17.el6_3.x86_64 already installed and latest version
Package 1:dbus-1.2.24-8.el6_6.x86_64 already installed and latest version
Package gvfs-archive-1.4.3-27.el6.x86_64 already installed and latest version
Package 1:gdm-user-switch-applet-2.30.4-67.el6.x86_64 already installed and latest version
Package 1:control-center-extra-2.28.1-41.el6.x86_64 already installed and latest version
Package eog-2.28.2-4.el6.x86_64 already installed and latest version
Package gnome-packagekit-2.28.3-10.el6.x86_64 already installed and latest version
Package gok-2.28.1-5.el6.x86_64 already installed and latest version
Package gnome-media-2.29.91-6.el6.x86_64 already installed and latest version
Package gnome-vfs2-smb-2.24.2-8.el6.x86_64 already installed and latest version
Package openssh-askpass-5.3p1-123.el6_9.x86_64 already installed and latest version
Package pulseaudio-module-x11-0.9.21-26.el6.x86_64 already installed and latest version
Package pulseaudio-module-gconf-0.9.21-26.el6.x86_64 already installed and latest version
Package 1:gnome-applets-2.28.0-7.el6.centos.x86_64 already installed and latest version
Package orca-2.28.2-1.el6.x86_64 already installed and latest version
Package vino-2.28.1-10.el6.x86_64 already installed and latest version
Package 1:gdm-plugin-fingerprint-2.30.4-67.el6.x86_64 already installed and latest version
Warning: Group basic-desktop does not have any packages.
No packages in any requested group available to install or update

[unlim]

I perform simple VDS restart few times – and this not help.
I have following script on server boot:
COOKIE=ps -ef | md5sum | cut -f 1 -d " "
AUTHFILE=$HOME/Xvfb-0.auth
xauth -f $AUTHFILE add :0 MIT-MAGIC-COOKIE-1 $COOKIE
xauth add :0 MIT-MAGIC-COOKIE-1 $COOKIE
Xvfb :0 -auth $AUTHFILE -screen 0 1920x1080x24 &
DISPLAY=:0 nohup /etc/gdm/Xsession gnome-session &

I tried to not run that script on server boot – still no luck.

What should I do more ?

[unlim]

>> Did you check other session logs in folder /usr/NX/var/log/node/
Yes. I look into all logs:
tail -f  /usr/NX/var/log/node/*/session

>> Can you paste here output of that command:
>> $ sudo df
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/simfs     199229440 112007320  87222120  57% /
none            16349940         4  16349936   1% /dev
none            16349940      5556  16344384   1% /dev/shm

>> Did you try to follow instructions in article about enabling disks on Centos, which we provided before?
Yes.

# yum install fuse dkms dkms-fuse
…
Package fuse-2.8.3-5.el6.x86_64 already installed and latest version
Package dkms-2.4.0-1.20170926git959bd74.el6.noarch already installed and latest version
No package dkms-fuse available.
Nothing to do
…

 

>> One more thing is to switch Selinux off for testing only, you can do it with that command:
Yes – nothing changes:
# setenforce 0
setenforce: SELinux is disabled
# setenforce 1
setenforce: SELinux is disabled

 

Logs just sent to forum[at]nomachine[dot]com.

[unlim]

That’s only I got in session log, when connects the disk:

 

==> /usr/NX/var/log/node/****/session <==
Info: Forwarded new slave connection.
Info: Closed connection to slave server.
Info: Forwarded new slave connection.
Info: Closed connection to slave server.
Info: Forwarded new slave connection.
Info: Closed connection to slave server.
Info: Forwarded new slave connection.
Info: Accepted new connection to filesystem server.
Info: Closed connection to slave server.
Info: Closed connection to slave server.
Info: Forwarded new slave connection.
Info: Closed connection to slave server.
Info: Forwarded new slave connection.
Info: Closed connection to slave server.

[unlim]

OK, logs were sent…

[unlim]

Thank you.
Unfortunately, that does not change anything, problem still exists.

# ls /usr/share/xsessions
gnome.desktop

# grep Exec /usr/share/xsessions/*
Exec=gnome-session
TryExec=gnome-session

# grep DefaultDesktopCommand /usr/NX/etc/node.cfg
DefaultDesktopCommand “/etc/gdm/Xsession gnome-session”

So it does not work with that setting.
As you suggested I have change that line to:
DefaultDesktopCommand “gnome-session”

and perform VDS restart.

Result was the same, error was the same exactly.

[Author]

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