3

PC specification:

  • OS:Ubuntu 20.04 LTS
  • Processor: Intel i3
  • ram: 4 gb
  • 1 Tb Hdd

i have installed three version of scilab 5.0 ,6.0.2 ,6.1 by following the procedure below:

  1. download tar files from official website
  2. untar them
  3. type ./bin/scilab

Inn these three scilab version , i get the same problem that graphic window appear which is completely blank , there is no plot now how i resolve this

my PC graphic : Mesa Intel® HD Graphics 620 (KBL GT2)

(base) vivek@vs~$ lspci | grep -Ei "VGA|3D|Video" 
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) 
(base) vivek@vs~$ glxinfo | grep -i vendor 
Command 'glxinfo' not found, but can be installed with: sudo apt install mesa-utils 
(base) vivek@vs~$ lsmod | grep drm, 
(base) vivek@vs~$ vainfo 
Command 'vainfo' not found, but can be installed with: sudo apt install vainfo 

(base) vivek@vs:~$ glxinfo | grep -i vendor 
## server glx vendor string: SGI client glx vendor string: Mesa Project and SGI Vendor: Intel (0x8086) OpenGL vendor string: Intel

(base) vivek@vs:~$ lsmod | grep drm 
drm_kms_helper 217088 1 
i915 cec 53248 2 drm_kms_helper,i915 
fb_sys_fops 16384 1 drm_kms_helper 
syscopyarea 16384 1 drm_kms_helper 
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper 
drm 552960 11 drm_kms_helper,i915


(base) vivek@vs:~$ vainfo
libva info: VA-API version 1.7.0 
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_7 
libva info: va_openDriver() returns 0 
vainfo: VA-API version: 1.7 (libva 2.6.0) 
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 () 
vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD 
VAProfileH264Main : VAEntrypointVLD 
VAProfileH264Main : VAEntrypointEncSliceLP 
VAProfileH264High : VAEntrypointVLD 
VAProfileH264High : VAEntrypointEncSliceLP 
VAProfileJPEGBaseline : VAEntrypointVLD 
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP VAProfileVP8Version0_3 : VAEntrypointVLD 
VAProfileHEVCMain : VAEntrypointVLD 
VAProfileHEVCMain10 : VAEntrypointVLD 
VAProfileVP9Profile0 : VAEntrypointVLD 
VAProfileVP9Profile2 : VAEntrypointVLD
N0rbert
  • 99,918
Vivek Sharma
  • 75
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    Couple of things fist do not use all caps like that. Second they have their own support https://www.scilab.org/services/user-support – David Apr 25 '21 at 06:24
  • do you think this is relevant – Vivek Sharma Apr 25 '21 at 06:30
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    Please [edit] your question to remove the unnecessary capitalisation which hurts my eyes and make it difficult for people to read. If you left the cap lock on by mistake, you can use on online tool like https://convertcase.net/ – graham Apr 25 '21 at 06:51
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    Does this answer your question? How to get Scilab 6.1.0 working on Ubuntu 20.04 LTS?. Alternatively, use GNU Octave. It has excellent syntax compalibility with Matlab and Scilab. sudo apt install octave – Archisman Panigrahi Apr 25 '21 at 06:54
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    Please retry with LIBGL_ALWAYS_SOFTWARE=1 ./bin/scilab . What is your graphics card? Please show the output of lspci | grep -Ei "VGA|3D|Video" , glxinfo | grep -i vendor , lsmod | grep drm, vainfo . Do you use real hardware or VM? Have you tried running Scilab 5.2? – N0rbert Apr 25 '21 at 07:36
  • N0rbert : thanks man – Vivek Sharma Apr 25 '21 at 08:59
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    LIBGL_ALWAYS_SOFTWARE=1 ./bin/scilab this is really help , now plots appear on graphic window – Vivek Sharma Apr 25 '21 at 09:00
  • my PC graphic : Mesa Intel® HD Graphics 620 (KBL GT2) – Vivek Sharma Apr 25 '21 at 09:01
  • Post the output to the question for remaining commands. Edit it. – N0rbert Apr 25 '21 at 09:02
  • (base) vivek@vs~$ lspci | grep -Ei "VGA|3D|Video" ## 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) __(base) vivek@vs~$ glxinfo | grep -i vendor ##

    Command 'glxinfo' not found, but can be installed with:

    sudo apt install mesa-utils

    __(base) vivek@vs~$ lsmod | grep drm, __(base) vivek@vs~$ vainfo ##

    Command 'vainfo' not found, but can be installed with:

    sudo apt install vainfo

     – Vivek Sharma Apr 25 '21 at 09:08
  • Please install both tools with sudo apt install mesa-utils vainfo and then run glxinfo | grep -i vendor , lsmod | grep drm and vainfo again. – N0rbert Apr 25 '21 at 09:10
  • just give me 2 minute – Vivek Sharma Apr 25 '21 at 09:11
  • (base) vivek@vs:~$ glxinfo | grep -i vendor ## server glx vendor string: SGI client glx vendor string: Mesa Project and SGI Vendor: Intel (0x8086) OpenGL vendor string: Intel – Vivek Sharma Apr 25 '21 at 09:16
  • ______(base) vivek@vs:~$ lsmod | grep drm ######## drm_kms_helper 217088 1 i915 cec 53248 2 drm_kms_helper,i915 fb_sys_fops 16384 1 drm_kms_helper syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper drm 552960 11 drm_kms_helper,i915 – Vivek Sharma Apr 25 '21 at 09:16
  • ___(base) vivek@vs:~$ vainfo ###### libva info: VA-API version 1.7.0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_7 libva info: va_openDriver() returns 0 vainfo: VA-API version: 1.7 (libva 2.6.0) vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 () vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD – Vivek Sharma Apr 25 '21 at 09:17
  • VAProfileMPEG2Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointEncSliceLP VAProfileH264High : VAEntrypointVLD VAProfileH264High : VAEntrypointEncSliceLP VAProfileJPEGBaseline : VAEntrypointVLD VAProfileJPEGBaseline : VAEntrypointEncPicture VAProfileH264ConstrainedBaseline: VAEntrypointVLD – Vivek Sharma Apr 25 '21 at 09:17
  • VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP VAProfileVP8Version0_3 : VAEntrypointVLD VAProfileHEVCMain : VAEntrypointVLD VAProfileHEVCMain10 : VAEntrypointVLD VAProfileVP9Profile0 : VAEntrypointVLD VAProfileVP9Profile2 : VAEntrypointVLD – Vivek Sharma Apr 25 '21 at 09:18
  • I would recommend to install the i965-va-driver package, then reboot and retry running Scilab. – N0rbert Apr 25 '21 at 09:28
  • i965-va-driver is already the newest version (2.4.0-0ubuntu1). now restart – Vivek Sharma Apr 25 '21 at 09:32

4 Answers4

4

As temporary solution you can force software video rendering by running Scilab with:

LIBGL_ALWAYS_SOFTWARE=1 ./bin/scilab
N0rbert
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0

Changing the mesa drivers to this worked for me

## mesa drivers to correct plot issues with scilab 6x
# See --> https://www.linuxcapable.com/install-upgrade-mesa-drivers-radeon-nvidia-on-ubuntu-20-04-lts/
RUN add-apt-repository ppa:kisak/kisak-mesa -y
RUN apt update
RUN apt upgrade -y
int64
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0

using the environment variable MESA_GL_VERSION_OVERRIDE=2.1 solved this problem for me at least, in Manjaro 2023-06-28.

Felipe Lorenzzon
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0

I confirm that this works for me too in Debian 12: in shell window:

MESA_GL_VERSION_OVERRIDE=2.1 /bin/scilab

Also you can add it to your .bashrc:

gedit .bashrc

#add folowing lines in this file:

MESA_GL_VERSION_OVERRIDE=2.1

export MESA_GL_VERSION_OVERRIDE

After saving the file either source it:

source ~/.bashrc

or reboot your system

Babak
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