Ubuntu – After latest updates Scilab 5.5.2 does not start on Ubuntu 16.04.3 LTS (amd64, AMD A4-4000 APU)

16.04amd-graphicsgpu-driversscilab

I have installed Ubuntu 16.04.3 LTS on computer with AMD A4-4000 APU with Radeon(tm) HD Graphics and installed Scilab 5.5.2 here from official repository (package version 5.5.2-2ubuntu3).

It worked normally on 2017-12-24, but broken by some latest update. I can post dpkg-log, but it seems that it MESA-related:

$ cat /var/log/dpkg.log* | grep "status installed.*mesa"
2018-01-11 14:51:08 status installed libglapi-mesa:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:09 status installed libglapi-mesa:i386 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:10 status installed libgl1-mesa-dri:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:11 status installed libgl1-mesa-dri:i386 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:16 status installed libegl1-mesa:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:17 status installed libwayland-egl1-mesa:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:18 status installed libosmesa6:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:18 status installed libosmesa6:i386 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:19 status installed libgl1-mesa-glx:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:20 status installed libgl1-mesa-glx:i386 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:20 status installed libgles2-mesa:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-11 14:51:21 status installed mesa-vdpau-drivers:amd64 17.2.4-0ubuntu1~16.04.2
2018-01-12 12:24:25 status installed mesa-va-drivers:amd64 17.2.4-0ubuntu1~16.04.2 # <- installed after crash detection by me

What I tried:

  • Rebooted with previous kernel 4.4.0-104-generic instead of newest 4.4.0-109-generic

  • Cleared Scilab folder in $HOME

    rm ~/.Scilab -rf
    
  • Installed vainfo and mesa-va-drivers to have normal output of vainfo as follows:

    $ vainfo 
    libva info: VA-API version 0.39.0
    libva info: va_getDriverName() returns 0
    libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri   /r600_drv_video.so
    libva info: Found init function __vaDriverInit_0_39
    libva info: va_openDriver() returns 0
    vainfo: VA-API version: 0.39 (libva 1.7.0)
    vainfo: Driver version: mesa gallium vaapi
    vainfo: Supported profile and entrypoints
          VAProfileMPEG2Simple            : VAEntrypointVLD
          VAProfileMPEG2Main              : VAEntrypointVLD
          VAProfileVC1Simple              : VAEntrypointVLD
          VAProfileVC1Main                : VAEntrypointVLD
          VAProfileVC1Advanced            : VAEntrypointVLD
          VAProfileH264ConstrainedBaseline: VAEntrypointVLD
          VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
          VAProfileH264Main               : VAEntrypointVLD
          VAProfileH264Main               : VAEntrypointEncSlice
          VAProfileH264High               : VAEntrypointVLD
          VAProfileH264High               : VAEntrypointEncSlice
          VAProfileNone                   : VAEntrypointVideoProc
    
  • reported bug 1742894 to launchpad.

  • upgrading to RollingLTSEnablementStack (with sudo apt-get install --install-recommends linux-generic-hwe-16.04 xserver-xorg-hwe-16.04) does not help

  • BIOS upgrading does not help.

My system information:

$ lspci -knn | grep -A3 VGA
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] [1002:9993]
    Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] [1002:0123]
    Kernel driver in use: radeon
    Kernel modules: radeon


$ cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-4.4.0-109-generic root=UUID=... ro splash quiet vt.handoff=7


$ glxinfo | grep -i 'direct\|vendor\|opengl'
direct rendering: Yes
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
    Vendor: X.Org (0x1002)
OpenGL vendor string: X.Org
OpenGL renderer string: AMD ARUBA (DRM 2.43.0 / 4.4.0-109-generic, LLVM 5.0.0)
OpenGL core profile version string: 4.1 (Core Profile) Mesa 17.2.4
OpenGL core profile shading language version string: 4.10
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
    GL_ARB_direct_state_access, GL_ARB_draw_buffers, 
    GL_ARB_draw_indirect, GL_ARB_draw_instanced, 
    GL_ARB_map_buffer_range, GL_ARB_multi_bind, GL_ARB_multi_draw_indirect, 
OpenGL version string: 3.0 Mesa 17.2.4
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 17.2.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:

In Software & Updates software-properties-gtk I have only one suggestion about installation of amd64-microcode package. Its installation does not help.

Do you need more details?

Best Answer

I got it working on Ubuntu 16.04 without downgrading any package. I just run:

#!/bin/bash
export MESA_GL_VERSION_OVERRIDE=3.0 ; scilab $*

Hope it helps,

Antoine

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