As a matter of fact, I just checked the bug happens with scilab,
available in universe. Scilab returns some interesting debug info in the
standard output, which O copy in the attached text file.
NEW INFO.
I didn't see before that matlab was generating a crash log for this. This log
confirms that the error comes from java:
"Assertion in void {anonymous}::mwJavaAbort() at javainit.cpp line 1411:
Fatal Java Exception. See Java Crash Report for details."
The java crash report gives the following:
Operating System: Linux 4.10.0-37-generic #41-Ubuntu SMP Fri Oct 6 20:20:37
UTC 2017 x86_64
Processor ID: x86 Family 6 Model 60 Stepping 3, GenuineIntel
Host Name: XXXXXXXX
FATAL ERROR in native method: Nativewindow X11 IOError: Display 0x7fb2cb9e5210
(localhost:10.0): Resource temporarily unavailable
at sun.awt.X11.XlibWrapper.XEventsQueued(Native Method)
at sun.awt.X11.XToolkit.run(Unknown Source)
at sun.awt.X11.XToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Which says that X11 is at fault.
** Attachment added: "scilab debugging information"
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1726595/+attachment/4994791/+files/scilabdebug.txt
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Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1726595
Title:
Running Matlab (R) from ssh session with X forwarding doesn't work
anymore in 17.10
Status in openssh package in Ubuntu:
Incomplete
Bug description:
OBSERVED BEHAVIOR:
Matlab stays in busy state when using some functions like "plot" or even
"exit", while executing through a ssh tunnel with X11 forwarding.
REPRODUCE THE BUG:
You need matlab (my version is R2017a) to reproduce the bug. I suspect
any version >= 2014b would reproduce the bug (HG2 framework), and
maybe any version.
1. Connect to self (or from other machine) with X forwarding:
$ ssh -X user@localhost
2. Launch matlab
$ matlab &
3. Plot something
>> plot(1,1)
ADDITIONAL INFORMATION
- Normal behavior would be appearance of a new window and a single point at
position (1,1).
- No ressources seem to be used.
- Opening a figure alone is possible. (>> figure). Opening other windows from
the graphical user interface is possible
- Opening Matlab without the java machine seems to work, but matlab relies
heavily on java. At least "exit" which doesn't work with java, works without
java.
- Providing Matlab with open-jdk version 1.8.0_144 didn't change anything.
- This used to work perfectly for as long as I have been using Ubuntu (since
2012).
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: openssh-client 1:7.5p1-10
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Mon Oct 23 17:44:23 2017
ExecutablePath: /usr/bin/ssh
InstallationDate: Installed on 2017-08-25 (59 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
RelatedPackageVersions:
ssh-askpass N/A
libpam-ssh N/A
keychain N/A
ssh-askpass-gnome N/A
SSHClientVersion: OpenSSH_7.5p1 Ubuntu-10, OpenSSL 1.0.2g 1 Mar 2016
SourcePackage: openssh
UpgradeStatus: Upgraded to artful on 2017-10-23 (0 days ago)
modified.conffile..etc.ssh.ssh_config: [modified]
mtime.conffile..etc.ssh.ssh_config: 2017-10-23T16:25:50.569560
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