blank screen when invoking trial matlab 2020a version on CentOS 7 Linux

blank screen when invoking trial matlab 2020a version on CentOS 7 Linux

Saw in some posts that the following canberra/pk-gtk module missing issue wouldnt be affecting. Pasting the flagging messages anyhow.

$ /usr/local/bin/matlab 
MATLAB is selecting SOFTWARE OPENGL rendering.
Gtk-Message: 14:01:40.560: Failed to load module "pk-gtk-module"
Gtk-Message: 14:01:40.561: Failed to load module "canberra-gtk-module"

OS information:

cat /etc/os-release
$ cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

Installed matlab2020a:

------------------------------------------------------------------------
->      (.matlab7rc.sh) sourced from directory (DIR = $MATLAB/bin)
->      DIR = /usr/local/MATLAB/R2020a/bin
------------------------------------------------------------------------
        a = argument  e = environment  r = rcfile  s = script
------------------------------------------------------------------------
->  r   MATLAB              = /usr/local/MATLAB/R2020a
->      LM_LICENSE_FILE     = (variable not defined)
->      MLM_LICENSE_FILE    = (variable not defined)
->  s   AUTOMOUNT_MAP       = 
->  e   DISPLAY             = :17.0
->  r   ARCH                = glnxa64
->  s   TOOLBOX             = /usr/local/MATLAB/R2020a/toolbox
->  e   MAX_OPEN_FILES      = 1024
->  s   _JVM_THREADS_TYPE   = 
->  e   MATLAB_JAVA         = 
->  s   MATLAB_MEM_MGR      = 
->  s   MATLAB_DEBUG        = 
->  s   LD_LIBRARY_PATH     = /usr/local/MATLAB/R2020a/sys/opengl/lib/glnxa64:/u
sr/local/MATLAB/R2020a/sys/os/glnxa64:/usr/local/MATLAB/R2020a/bin/glnxa64:/usr/
local/MATLAB/R2020a/extern/lib/glnxa64:/usr/local/MATLAB/R2020a/sys/java/jre/gln
xa64/jre/lib/amd64/native_threads:/usr/local/MATLAB/R2020a/sys/java/jre/glnxa64/
jre/lib/amd64/server

blank screen:

[Hong Ning Choo]

Replying to raise attention.

Answer 1

[Oren Zaharia]

We had a similar problem when we have used with xrdp and Xvnc.

We solved that by decrease the color depth in '/etc/xrdp/session.ini' to 16 by adding params to [Xvnc]

[Xvnc]
param=Xvnc
param=-bs
param=-nolisten
param=tcp
param=-localhost
param=-dpi
param=96
param=-depth
param=16

and when you connect using mstsc (Remote Desktop) or Remima decrease the depth in display to 16 too.

Good Luck

[Danny S]

Thanks! This was very helpful and with these changes, I was able to launch MATLAB R2020a on Centos 7 installed on a Hyper-V virtual machine, connected to via Xvnc/RDP.

For me, the file to modify was '/etc/xrdp/sesman.ini', but by setting the colour depth to 16 there and in Remote Desktop Connection, I was able to launch MATLAB activation and the MATLAB desktop.

Answer 2

[思远 周]

I have same question