Black screen with NoMachine 6.0.66_2_amd64

[huangyingw]

Hi, I installed NoMachine 6.0.66_2_amd64.deb on my Ubuntu 17.04 with nvidia driver 387.34.

When I connect to it, I got a black screen, when I move my mouse, I see a cross.

I already set

DesktopCommandLibraryPath = “/usr/lib/x86_64-linux-gnu/mesa”

EnableHardwareEncoding 0

EnableVirtualGLSupport 0

in /usr/NX/etc/node.cfg

Bellowing are my dropbox link to /usr/NX/var/log/ folder:

https://www.dropbox.com/sh/y65rjv71mttvl1x/AACuYbH1K0X3wuwe22o9SqC6a?dl=0

/usr/NX/etc/ folder:

https://www.dropbox.com/sh/5rfbvlo3tvxspte/AABGm42buUa-yjy3GhS5XWyRa?dl=0

 

[fra81]

Hi,

what does the ‘ps -ef | grep X’ command return on the server?

Is it maybe a headless server (no monitor attached)?

[huangyingw]

Bellowing are my output, I remember I had a 4k monitor simulator plugin in the HDMI slot, which will simulate a 4k monitor connection. And previously it works.

root@server:~# ps -ef | grep X
nx        1596     1  0 Jan13 ?        00:00:03 /usr/NX/bin/nxserver.bin –daemon
nx        1751  1596  0 Jan13 ?        00:00:00 /usr/NX/bin/nxd
nx        3066  1751  0 10:30 ?        00:00:00 /usr/NX/bin/nxserver.bin -c /etc/NX/nxserver –login -H 5
root      3084  3066  0 10:30 ?        00:00:00 /usr/NX/bin/nxexec –node –user huangyingw –priority realtime –mode 0 –pid 13 -H 5
huangyi+  3102  3084  0 10:30 ?        00:00:00 /usr/NX/bin/nxnode.bin -H 5
root      3723     1  0 10:33 ?        00:00:00 /bin/bash /usr/share/xdiagnose/failsafeXServer
root      3909  3723  0 10:33 ?        00:00:00 xinit /usr/share/xdiagnose/failsafeXinit /etc/X11/xorg.conf.failsafe — /usr/bin/X -br -once -config /etc/X11/xorg.conf.failsafe -logfile /var/log/Xorg.failsafe.log
root      3910  3909  0 10:33 tty2     00:00:00 /usr/lib/xorg/Xorg :0 -br -once -config /etc/X11/xorg.conf.failsafe -logfile /var/log/Xorg.failsafe.log
root      3960  3909  0 10:33 ?        00:00:00 /bin/bash /usr/share/xdiagnose/failsafeXinit /etc/X11/xorg.conf.failsafe
root      5515  1596  0 10:33 ?        00:00:00 /usr/NX/bin/nxexec –node –user nx –priority realtime –mode 0 –pid 15
nx        5528  5515 31 10:33 ?        00:00:01 /usr/NX/bin/nxnode.bin
root      5919  5910  0 10:33 tty7     00:00:00 /usr/lib/xorg/Xorg -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt7 -novtswitch
root      5941  2992  0 10:33 pts/2    00:00:00 grep –color=auto X

this time, I see a screen prompt

[fra81]

There is something strange. I see two X server processes running, and one is in failsafe mode.

I would suggest you to reset everything:

systemctl stop lightdm
killall Xorg
killall -9 Xorg
systemctl start lightdm

/usr/NX/bin/nxserver –restart

Or reboot the machine… 🙂

[Author]

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