Segmentation fault on Arch

[hatunike]

I’m unable to start the nxplayer whenever i try to run the application i get :

415612 segmentation fault (core dumped) ./nxplayer

I’m using Arch. I’ve tried uninstalling and reinstalling several different ways. Even just downloading the Enterprise Client and always this same error (tried installing via yay -S nomachine, direct tar from site, as well as client stand along application).

 

NXCLIENT – Version 6.11.2

NoMachine Enterprise Free Client

Arch Linux

 

 

[Britgirl]

We make regular tests on Arch (rolling release) so this is strange.

Can you tell me what the kernel version is and system architecture?

Also, what desktop environment are you using?

[hatunike]

Arch Linux x86_64
5.8.3-arch1-1
i3 (specifically i3-gaps)

For what it’s worth, i have a friend that has a very similar setup to me (same kernel, same architecture) and everything works great for him.

[Britgirl]

We tested again with i3-gaps and everything is running fine. Please try with the free x84_64.tar.gz package and tell us if you still get the same behaviour.

[hatunike]

Yes, same behavior. I downloaded the free x84_64.tar.gz and installed via the install script. It should be noted that the server is working and does work regardless of the way i install it – it is simply the nxplayer that has the segmentation fault (regardless of how I install it).

[kroy]

Can you send backtrace from the core? Instructions for your system you can find there: https://wiki.archlinux.org/index.php/Debug_-_Getting_Traces. Please send also output of the command: ldd /usr/NX/bin/nxplayer.bin.

[hatunike]

I’m pretty new to this stuff, so sorry if i didn’t grab the right stuff. But here is what i’ve found, so i discovered that nxclient is just dumping like every second. I had like 10,000 dumps. i’ll post nxclient AND nxplayer – each had dumps :

Reading symbols from /usr/NX/bin/nxclient.bin…
(No debugging symbols found in /usr/NX/bin/nxclient.bin)
[New LWP 1749644]
[New LWP 1749651]
[New LWP 1749653]
[New LWP 1749652]
[New LWP 1749649]
[New LWP 1749650]
[Thread debugging using libthread_db enabled]
Using host libthread_db library “/usr/lib/libthread_db.so.1”.
Core was generated by/usr/NX/bin/nxclient.bin –monitor –pid 3732785′.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fa1799fa168 in ?? () from /usr/NX/lib/libfreetype.so
[Current thread is 1 (Thread 0x7fa1769fc8c0 (LWP 1749644))]

Reading symbols from /usr/NX/bin/nxplayer.bin…
(No debugging symbols found in /usr/NX/bin/nxplayer.bin)
[New LWP 1706195]
[New LWP 1706203]
[Thread debugging using libthread_db enabled]
Using host libthread_db library “/usr/lib/libthread_db.so.1”.
Core was generated by `/usr/NX/bin/nxplayer.bin’.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f1df9199168 in ?? () from /usr/NX/lib/libfreetype.so
[Current thread is 1 (Thread 0x7f1df74be8c0 (LWP 1706195))]
(gdb)

Just for completeness this is what the coredumpct list kind of looks like, truncated to just a few of the 10,000 logs :

Thu 2020-09-03 17:23:03 MDT 1705897 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:05 MDT 1705999 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:06 MDT 1706081 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:07 MDT 1706162 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:08 MDT 1706195 1000 1000 11 present /usr/NX/bin/nxplayer.bin
Thu 2020-09-03 17:23:09 MDT 1706242 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:10 MDT 1706349 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:11 MDT 1706431 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:13 MDT 1706506 1000 1000 11 present /usr/NX/bin/nxclient.bin
Thu 2020-09-03 17:23:45 MDT 1706768 1000 1000 11 present /usr/NX/bin/nxclient.bin

finally – here is the ldd /usr/NX/bin/nxplayer.bin :

ldd /usr/NX/bin/nxplayer.bin
linux-vdso.so.1 (0x00007fff5ca67000)
libnxdifb.so => not found
libnxdixl.so => not found
libnxdiex.so => not found
libnxcsl.so => not found
libnxcim.so => not found
libnxc.so => not found
libnx.so => not found
libnxd.so => not found
libnxn.so => not found
libnxne.so => not found
libnxlo.so => not found
libogg.so => /usr/lib/libogg.so (0x00007fae67edb000)
libz.so => /usr/lib/libz.so (0x00007fae67ebf000)
libpixman.so => not found
libqt.so => not found
libmdnsd.so => not found
libdl.so.2 => /usr/lib/libdl.so.2 (0x00007fae67eb9000)
libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007fae67e97000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007fae67cb8000)
libm.so.6 => /usr/lib/libm.so.6 (0x00007fae67b72000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007fae67b58000)
libc.so.6 => /usr/lib/libc.so.6 (0x00007fae6798f000)
/lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007fae67f0b000)

[kroy]

Please send also backtrace to get detailed information.

sudo gdb -c [core-file-nxplayer-path] /usr/NX/bin/nxplayer.bin

Inside gdb program execute command thread apply all bt full and paste output here or attach in the text file.

[hatunike]

So I did end up solving this issue that vexed me for awhile. I felt like i had tried everything. But the problem was that when I was uninstalling there was still some local files that must have been borked or corrupted or something from the very first time i tried running NoMachine

I had looked up some ways to totally remove NoMachine, but somehow had missed anyone saying to specifically remove /.nx Once i removed that, then all the installs started working and all my problems went away.

The problems i was experiencing were directly tied to the fact that I couldn’t/hadn’t properly removed NoMachine from my system. If you run into this problem, hopefully this helps, and good luck!

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