Nxplayer GUI doesn’t load

[KA1026]

I can’t get the nxplayer GUI to load. When I right click on the !M icon, nothing happens. I have a desktop shortcut to launch a new connection, which runs (I can tell using the ‘ps’ command) but nothing displays on screen. Same with selecting the NoMachine through the Applications menu. I can try running the player manually (usr/NX/bin/nxplayer), but that also doesn’t load the GUI. I’ve confirmed that the server is enabled and running. The odd thing is that it works sometimes, but seems random and I can’t pinpoint why.

 

Version: 6.9.2

Server version: 6.11.2

Linux version: Redhat Enterprise Linux 7

[Tor]

Please run this command

strace -v -f -o nxplayer.trace /usr/NX/bin/nxplayer

and send the nxplayer.trace file to forum[at]nomachine[dot]com.

[KA1026]

Sent. But note that I had to kill the process because it was hanging. Hopefully it captured relevant information.

[Tor]

Hi. Thanks, data was enough to know that the process stops while connecting to the X server, but it is not clear why this happens. Could you please do the following and send by e-mail the file gdb.txt:

– Execute /usr/NX/bin/nxplayer
– Execute sudo gdb -p $(pgrep nxplayer)
– In gdb run the following commands:
set pagination off
set logging on
thread apply all bt full
set logging off
quit

Note: the file gdb.txt will be owned by root, you’ll need to use ‘sudo’ to delete it.

[KA1026]

File has been sent.

For other users who may come across this, note that I had to run the following command to resolve an error with gdb (unefined symbol pyunicodeucs34_fromencodedobject), which occurs if the you have a different default path for Python:

unsetenv LD_LIBRARY_PATH

 

 

[Tor]

Hi, thanks. Are you starting the client in a remote virtual desktop?
Please try the following: edit /usr/NX/bin/nxplayer and add the line unset LD_PRELOAD before the exec command.

[KA1026]

Yes, the client is being started in a remote desktop. I can confirm that adding the above line works! The player now launches!

[KA1026]

I am curious though as to why this works. Can you explain exactly what unsetting LD_PRELOAD does? Thanks again!

[Tor]

Sorry for my late answer. I noticed you’re using VirtualGL and somehow it is blocking the connection of the client to the X server. By unsetting LD_PRELOAD you’re telling the client to not use VirtualGL.

[Author]

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