Can't launch webwindow content on Linux (CentOS 7)

I can't launch any part of matlab which uses "webwindow" functionality. Other windows open up and render properly (Simulink, Matlab windows for example, function as normal).

I am connecting to this machine over an SSH X tunnel, so this may have something to do with it. (I do have physical access to the machine if needed).

The issue appears to be just "webwindow" related. Launching the "Get Add-Ons" menu does not result in the add-ons browser window opening. Nothing happens, and sadly no error messages result from this.

Because I'm trying to install the Raspberry Pi support pack for Simulink, I downloaded the support pack manually. When I run the support pack installer, I finally get an error message:

If anyone could point me in the right direction to get this working, I'd really appreciate it.

Quick summary: * WebWindow applications (Get Add-Ons and Install Support Package windows for example) are not opening, or returning error messages and not opening * I am connecting to the box over an SSH X tunnel * Matlab version is R2017A (build 9.2.0.538062) 64-bit * The machine is running CentOS linux 7 64-bit.

Thanks!

[BlairL]

I just crashed matlab, I'm not sure if this is related.

------------------------------------------------------------------------
       Segmentation violation detected at Wed Mar 22 19:36:35 2017
------------------------------------------------------------------------

Configuration:
  Crash Decoding      : Disabled - No sandbox or build area path
  Crash Mode          : continue (default)
  Current Graphics Driver: Brian Paul Mesa X11 Version 2.1 Mesa 10.5.2
  Current Visual      : 0x21 (class 4, depth 24)
  Default Encoding    : UTF-8
  Deployed            : false
  GNU C Library       : 2.17 stable
  Host Name           : prod
  MATLAB Architecture : glnxa64
  MATLAB Entitlement ID: 865510
  MATLAB Root         : /usr/local/MATLAB/R2017a
  MATLAB Version      : 9.2.0.538062 (R2017a)
  OpenGL              : software
  Operating System    : Linux 3.10.0-514.10.2.el7.x86_64 #1 SMP Fri Mar 3 00:04:05 UTC 2017 x86_64
  Processor ID        : x86 Family 6 Model 23 Stepping 10, GenuineIntel
  Virtual Machine     : Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
  Window System       : The Cygwin/X Project (11901000), display localhost:10.0

Fault Count: 1

Abnormal termination:
Segmentation violation

Register State (from fault):
  RAX = 00007f746458aff0  RBX = 00007f74880139b0
  RCX = 00007f751bd612e0  RDX = 00007f73ef999b80
  RSP = 00007f73ef998058  RBP = 0000000000000000
  RSI = 0000000000000005  RDI = 00007f746458ae70

     R8 = 0000000000000001   R9 = 00007f74880139e0
    R10 = 0000000000000001  R11 = 0000000000000246
    R12 = 00007f746458ae70  R13 = 00007f74643409a0
    R14 = 0000000000000000  R15 = 00007f73ef998260

    RIP = 00007f7464586880  EFL = 0000000000010246

     CS = 0033   FS = 0000   GS = 0000

Stack Trace (from fault):
[  0] 0x00007f7464586880                                   <unknown-module>+00000000

If this problem is reproducible, please submit a Service Request via:
    http://www.mathworks.com/support/contact_us/

A technical support engineer might contact you with further information.

Thank you for your help.** This crash report has been saved to disk as /home/user_name/matlab_crash_dump.19488-1 **

MATLAB is exiting because of fatal error

Answer 1

[BlairL]

I resolved this. It appears that installing libXScrnSaver and libXss.so.1 fixed whatever was preventing this from working.

I found this thread on Mathworks Answers which appears to be a similar issue (if not identical):

https://www.mathworks.com/matlabcentral/answers/309629-cannot-open-add-on-window-on-linux

and ran the commands in this reply:

https://www.mathworks.com/matlabcentral/answers/309629-cannot-open-add-on-window-on-linux#comment_408276

In summary, install libXScrnSaver and libX.ss.so.1, and run these commands from the aforementioned thread:

>> cd(matlabroot)
>> cd bin/glnxa64
>> !./MATLABWindow -url=http://mathworks.com --disable-gpu

Answer 2

[Joakim Lindblad]

For those running Gentoo: emerge libselinux

[Joakim Lindblad]

See also https://se.mathworks.com/matlabcentral/answers/382899-add-ons-logging-in-etc-do-not-work-linux-installation