Livox_viewer Ubuntu 16.04, How to install it properly and run it?

[Noli Sicad]

Hi Livox Team Dev,

How do you actually run this viewer?

~~~~~~~~~

./livox_viewer.sh: line 11:  5440 Illegal instruction     (core dumped) ./so/livox_viewer > /dev/null 2>&1
noli@noli-Latitude-E6320:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$

~~~~~~~~~~~~

noli@noli-Latitude-E6320:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$ sudo ./livox_viewer.sh
[sudo] password for noli:

noli@noli-Latitude-E6320:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$ livox_viewer
livox_viewer: command not found

~~~~~~~~~~~~~~~~~~

Where is should I run livox_viewer? Where it is installed?

Noli

[Livox Dev Team]

Dear Noli :

Which version of Ubuntu do you use? Livox Viewer for Ubuntu only supports Ubuntu 16.04 64-bit PC(AMD64) Desktop system currently. 

[Noli Sicad]

Yes, that Ubuntu 16.04 64-bit PC(AMD64) Desktop system that what I am using.

Ubuntu 16.04 regardless of Desktop (Qt, Gnome, LX, etc) can load the ibraries in Ubuntu 16.04.

I think you have to package the Livox Viewer properly. Please use the debian packaging software, so we can load the the library.

Please address the errors and issues.

Noli

[Noli Sicad]

Hi Livox Dev Team,

Please package the Livox Viewer using the Ubuntu Packaging Guideliness.

http://packaging.ubuntu.com/html/packaging-new-software.html

If you follow the right package we can load all the necessary libraries regarding we are using UbuntuMate, Ubuntu 16.04 (Qt) and Ubuntu Kylin is the official Chinese version of the Ubuntu

Hope to see a proper Livox Viewer in debian package.

Thanks.

Noli

[Noli Sicad]

Hi Livox Dev Team,

Again,

./livox_viewer.sh: line 11:  5440 Illegal instruction     (core dumped) ./so/livox_viewer > /dev/null 2>&1

noli@noli-Latitude-E6320:~/

Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$

How do you fix this error above?

Noli

[Kevin]

I am also having trouble running the viewer in Ubuntu 18.04.2. When I run the file in the terminal, nothing happens. It just skips to the next line and I can continue typing without any feedback of programs being installed or errors. I also can't find it in my installed software.

Is this due to the Ubuntu version I am running or am I doing something wrong?

I exactly followed the instructions in the readme file. Also tried with sudo bash, chmod but doesn't help either.

Kevin

[darrel...@ncl.ac.uk]

Probably a silly comment but this will only run an a 64bit x86 system - it will not work on any other platform, neither will it work on a 32bit system. I have asked them to release the source code with a make file so that we can compile for a different combination. 

I don't know how new they are to linux but releasing binaries will almost always end in tears.

[Ben langp]

They redirected the output info to /dev/null, you can edit the .sh file:

appname=`basename $0 | sed s,\.sh$,,`

dirname=`dirname $0`
tmp="${dirname#?}"

if [ "${dirname%$tmp}" != "/"  ]; then
    dirname=$PWD/$dirname
fi
LD_LIBRARY_PATH=$dirname/so
export LD_LIBRARY_PATH
./so/livox_viewer

It seems libpng12.0 missed when I test viewer in Unbuntu 18.04.

I fixed this problem by install libpng12.0 download here: https://packages.ubuntu.com/xenial/libpng12-0

[Kevin]

Thanks Ben! Changing that last line in the .sh file and installing libpng12.0 using the bellow command line fixed it for me!

echo "deb http://mirrors.kernel.org/ubuntu/ xenial main" | sudo tee -a /etc/apt/sources.list && sudo apt-get update && sudo apt install -y --allow-unauthenticated libpng12-0

[Noli Sicad]

Hi Livox Dev Team,

I edited the livox_viewer.sh (as showed below)

~~~~~~~~~~~

appname=`basename $0 | sed s,\.sh$,,`

dirname=`dirname $0`
tmp="${dirname#?}"

if [ "${dirname%$tmp}" != "/"  ]; then
    dirname=$PWD/$dirname
fi
LD_LIBRARY_PATH=$dirname/so
export LD_LIBRARY_PATH

./so/livox_viewer

~~~~~~~~~~~~~~~~~~

I checked my installed packages, libpng12-0 and libpng12-dev are already installed.

STILL DOES NOT WORK!!!!!!!!!!!!!!!!!!!!!!!

I am using Ubuntu 16.04. My Qt apps e.g. Kate is working.

Please solve this problem installing this livox_viewer in Ubuntu 16.04.

[Ben langp]

Hi Noli

What is the output error of livox_viewer after you edit the .sh file? still "Illegal instruction     (core dumped)"  as you posted?  can you post the output here? so that  we can help you. Actually errors in Ubuntu are difficult to  reproduce because of the vary configurations of your system.In general, “Illegal instruction     (core dumped) ” means that the binary file format is not compatible with your system. For example, when I put the AMD64 binary file on the ARM platform, this error occurs.But obviously the problem you are experiencing is not caused by this.

 

Ben

[Noli Sicad]

[Noli Sicad]

Hi Ben,

That's the error and the system information on my Ubuntu 16.04 laptop in my earlier post above.

Noli

[Noli Sicad]

Hi Ben,

In my other Ubuntu laptop 18.04.02LTS, there is no error but still not working.

Noli

[Kevin]

That's the same issue I had on Ubuntu 18.

Removing the > /dev/null 2>&1 part in the .sh file resolved that for me.

I then got the libpng error, which I resolved as discussed earlier.

[Noli Sicad]

Hi Kevin,

If you look at the first screenshot. That's what I done. Your

solution. I removed the "/dev/null 2>&1" But it did not work with me.

The second screenhot (18.04.02) no need to remove the "/dev/null
2>&1". There is no error. Have a look the screenshoot. It does not
work as well

Noli

[Kevin]

Actually just try removing the  > /dev/null 2>&1 on the second Ubuntu 18 laptop, save the .sh file and run it. Then you will get an error instead of nothing, which can be fixed using the libpng install. At least that's how it worked for me. I also didn't get any response at first, until I removed the  > /dev/null 2>&1.

[Noli Sicad]

Hi Kevin,

OK. I followed your suggestion.

Now, I got this error below

Noli

noli@noli-Latitude-E6430s:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$ ./livox_viewer.sh
./so/livox_viewer: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory
noli@noli-Latitude-E6430s:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$ echo "deb http://mirrors.kernel.org/ubuntu/ xenial main" | sudo tee -a /etc/apt/sources.list && sudo apt-get update && sudo apt install -y --allow-unauthenticated libpng12-0
[sudo] password for noli:

deb http://mirrors.kernel.org/ubuntu/ xenial main

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noli@noli-Latitude-E6430s:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$ ./livox_viewer.sh
./livox_viewer.sh: line 11:  3841 Illegal instruction     (core dumped) ./so/livox_viewer
noli@noli-Latitude-E6430s:~/Documents/LivoxViewer/Livox Viewer For Linux 16.04_x64 0.3.0$

[totor...@gmail.com]

hi Noli ,

I'm also exeperiencing this problem and get the same error output as you had ,have you solved this problem now ?

[totor...@gmail.com]

okay i've figured out why this problem happens, it's about CPU ability 

if your cpu doesn't support avx2 instruction,  you'll fail to launch livox viewer.

to check whether your cpu supports avx2 , open  /proc/cpuinfo , if you can see "avx2" tag(not avx)  behind the "flag" prefix, it means you have avx2 cpu support