Scilab 6.0 launches, shows its window and closes immediately on bionic and cosmic

[Norbert]

Steps to reproduce:
1. Install Ubuntu 18.04 LTS
2. Install `scilab` package with `sudo apt-get install scilab`
3. Try to launch it from menu (Applications->Other->Scilab in MATE)

Expected results:
Scilab is started, user can use it

Actual results:
Scilab is started, show its window with

  Startup execution:
    loading initial environment

then closes immediately

Notes:
1. scilab starts normally from terminal, here is its output:

$ scilab
Warning: Could not find Java package '/usr/share/java/lucene-core-4.10.4.jar'.
Warning: Could not find Java package '/usr/share/java/lucene-analyzers-common-4.10.4.jar'.
Warning: Could not find Java package '/usr/share/java/lucene-queryparser-4.10.4.jar'.
Some problems during the loading of the Java libraries occurred.
This could lead to inconsistent behaviours.
Please check SCI/etc/classpath.xml.
libEGL warning: DRI2: failed to authenticate

2. installing liblucene4.10-java (for /usr/share/java/lucene-core-4.10.4.jar, /usr/share/java/lucene-analyzers-common-4.10.4.jar and /usr/share/java/lucene-queryparser-4.10.4.jar ) does not change the situation.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: scilab 6.0.0-1
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.8-0ubuntu5
Architecture: amd64
CurrentDesktop: MATE
Date: Wed Dec 20 22:55:40 2017
PackageArchitecture: all
SourcePackage: scilab
UpgradeStatus: No upgrade log present (probably fresh install)

[Sriharip316-f (sriharip316-f)]

BUG DESCRIPTION:
----------------
When opened from GUI(gnome 3), Scilab closes immediately after opening in fedora 24. However, it runs fine when opened from terminal.

ERROR LOG:
----------
None

HOW TO REPRODUCE THE BUG:
-------------------------

OTHER INFORMATION:
------------------

[N-strelkov (n-strelkov)]

Same on Ubuntu 12.04.5 LTS amd64 with Scilab 6.0.0-beta2. But scilab launches normally from gnome-terminal.

Desktop launcher and terminal command is
   env LC_ALL="en_US.UTF-8" /home/nikolay/Software/scilab-6.0.0-beta-2/bin/scilab

[N-strelkov (n-strelkov)]

Same here.
Scilab 6.0.0.1486471292 amd64 under Ubuntu 12.04.5 LTS amd64.

[N-strelkov (n-strelkov)]

It a pity but bug exists in Scilab 6.0.0.1487071837 (final) amd64 under Ubuntu 12.04.5 LTS amd64.

[N-strelkov (n-strelkov)]

Temporary fixed by desktop launcher with "xterm -e"

env LC_ALL="en_US.UTF-8" xterm -e /home/nikolay/Software/scilab-6.0.0/bin/scilab

[Clement-david-h (clement-david-h)]

(In reply to Nikolay Strelkov from comment #4)
> Temporary fixed by desktop launcher with "xterm -e"
>
> env LC_ALL="en_US.UTF-8" xterm -e /home/nikolay/Software/scilab-6.0.0/bin/scilab

Nice catch ! I never use the default launcher shipped with the binary but use a local user-defined one. I will check the freedesktop norm and fix it.

[Petr-becka (petr-becka)]

Exactly the same problem at OpenSUSE Leap 42.2 with KDE with the same
temporary solution: ikon settings -> advance settings -> execute in terminal,
disadvantage: the terminal window is necessary to keep running.

[Richard-llom (richard-llom)]

(In reply to Clement DAVID from comment #5)
> Nice catch ! I never use the default launcher shipped with the binary but use a local user-defined one. I will check the freedesktop norm and fix
> it.

Hey clement, issue is still there.
It would be nice if you could take some time to to fix it...
ty

[Badshah400 (badshah400)]

*** Bug 15203 has been marked as a duplicate of this bug. ***

[Norbert (nrbrtx)]

All updates installed, scilab is still crashes on Bionic.

[Norbert (nrbrtx)]

Better solution is set `Terminal=true` in `scilab.desktop`:

sudo sed -i 's/Terminal=false/Terminal=true/g' /usr/share/applications/scilab.desktop

[Norbert (nrbrtx)]

Updated contact list.

[N-strelkov (n-strelkov)]

It is very bad that you forgot to fix this bug before 6.0.1 release.
So bug exists in 6.0.1.1518683525 on Ubuntu 16.04 LTS x86_64.

Temporary fixed by desktop launcher with "xterm -e": env LC_ALL="en_US.UTF-8" xterm -e /home/nikolay/Software/scilab-6.0.0/bin/scilab

This may break scilab in for example upcoming Ubuntu 18.04 LTS.

[Norbert (nrbrtx)]

18.04 LTS with all updates, bug exists.

[Norbert (nrbrtx)]

18.04 LTS with all updates, bug exists.

[Norbert (nrbrtx)]

18.10 cosmic is affected too.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Joseph Maillardet (jokx)]

Same problem after 18.04 upgrade.

Need to switch "Terminal" parameter to true in desktop file :
$ sudo sed -i 's/Terminal=false/Terminal=true/' /usr/share/applications/scilab.desktop

Also need to correct the "classpath.xml" file :
$ sudo sed -i 's/jlatexmath-fop-1.0.6.jar/jlatexmath-fop-1.0.7.jar/' /usr/share/scilab/etc/classpath.xml

And finally need to install libcanberra-gtk to stop scilab complain about its lake :
$ sudo apt install libcanberra-gtk-module libcanberra-gtk3-module

[Norbert (nrbrtx)]

Cosmic 18.10 is still affected.

[Clement-david-h (clement-david-h)]

Fixed in 6.0.2 ; see https://codereview.scilab.org/#/c/20834/

[Norbert (nrbrtx)]

Still a problem, using Scilab from bionic-proposed:

$ apt-cache policy scilab
scilab:
  Installed: 6.0.1-7~18.04
  Candidate: 6.0.1-7~18.04
  Version table:
 *** 6.0.1-7~18.04 500
        500 http://archive.ubuntu.com/ubuntu bionic-proposed/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu bionic-proposed/universe i386 Packages
        100 /var/lib/dpkg/status
     6.0.1-1ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages

(see screencast)

[Amr Ibrahim (amribrahim1987)]

Fixed in 6.0.2 in Disco.

[Norbert (nrbrtx)]

The fix for LTS (!!!!!!!!)
is still needed.

Please start the SRU/whatever bug-fixing procedure for 18.04 (bionic beaver).

[Tiago Stürmer Daitx (tdaitx)]

> The fix for LTS (!!!!!!!!)
> is still needed.
>
> Please start the SRU/whatever bug-fixing procedure for 18.04 (bionic beaver).

Notice that backport fixes might come only after they have been confirmed to work with the development version.

New versions for scilab were release in both Bionic and Cosmic released about the same time as the previous comment was made, they included the patch from https://codereview.scilab.org/#/c/20834/ so please confirm if these new versions are also failing:
- bionic-proposed 6.0.1-7ubuntu1~18.04
- cosmic-proposed 6.0.1-7ubuntu1~18.10

[Tiago Stürmer Daitx (tdaitx)]

It seems that this bug has been duplicated in bug #1807602, marking it as such. Please reopen if they are not in fact the same.

[Norbert (nrbrtx)]

Thank you very much!

The 6.0.1-7ubuntu1~18.04 version fixes bug on Bionic Beaver.

It is great.