Unity 3D Suddenly Disabled in Ubuntu 12.04

[Malsasa]

My Unity was always OK since first install in 2012. I always use Unity 3D session, never use 2D session. But now, I have only Unity 2D session. I don't want 2D session, I want my 3D session back. I don't know why, now I get Unity 3D supported: no information while I always can use 3D session before.

https://malsasa.files.wordpress.com/2014/07/screenshot-from-2014-07-17-223028.png

Result from /usr/lib/nux/unity_support_test -p command:



OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300)
OpenGL version string: 2.1 Mesa 8.0.2

Not software rendered: no
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes

Unity 3D supported: no

Result from dpkg -l | grep xorg-video command:



ii xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 X.Org X server -- AMD/ATI display driver wrapper
ii xserver-xorg-video-cirrus 1:1.3.2-4build1 X.Org X server -- Cirrus display driver
ii xserver-xorg-video-fbdev 1:0.4.2-4ubuntu2 X.Org X server -- fbdev display driver
ii xserver-xorg-video-geode 2.11.13-2build1 X.Org X server -- Geode GX2/LX display driver
ii xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4 X.Org X server -- Intel i8xx, i9xx display driver
ii xserver-xorg-video-mach64 6.9.0-1build2 X.Org X server -- ATI Mach64 display driver
ii xserver-xorg-video-mga 1:1.4.13.dfsg-4build2 X.Org X server -- MGA display driver
ii xserver-xorg-video-neomagic 1:1.2.5-2build2 X.Org X server -- Neomagic display driver
ii xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 X.Org X server -- Nouveau display driver
ii xserver-xorg-video-openchrome 1:0.2.904+svn1050-1 X.Org X server -- VIA display driver
ii xserver-xorg-video-qxl 0.0.16-2 X.Org X server -- QXL display driver
ii xserver-xorg-video-r128 6.8.1-5build2 X.Org X server -- ATI r128 display driver
ii xserver-xorg-video-radeon 1:6.14.99~git20111219.aacbd629-0ubuntu2 X.Org X server -- AMD/ATI Radeon display driver
ii xserver-xorg-video-s3 1:0.6.3-4build2 X.Org X server -- legacy S3 display driver
ii xserver-xorg-video-savage 1:2.3.3-1ubuntu1 X.Org X server -- Savage display driver
ii xserver-xorg-video-siliconmotion 1:1.7.5-1build2 X.Org X server -- SiliconMotion display driver
ii xserver-xorg-video-sis 1:0.10.3-3build2 X.Org X server -- SiS display driver
ii xserver-xorg-video-sisusb 1:0.9.4-2build2 X.Org X server -- SiS USB display driver
ii xserver-xorg-video-tdfx 1:1.4.3-4build2 X.Org X server -- tdfx display driver
ii xserver-xorg-video-trident 1:1.3.4-2build2 X.Org X server -- Trident display driver
ii xserver-xorg-video-vesa 1:2.3.0-7build2 X.Org X server -- VESA display driver


Result from lshw -c video command:



*-display
description: VGA compatible controller
product: 2nd Generation Core Processor Family Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:50 memory:dd000000-dd3fffff memory:c0000000-cfffffff ioport:e000(size=64)

My Habit



I never do upgrade/update packages (but sudo apt-get update is often) and my Unity always be OK until this problem appeared. I don't think not upgrading is a problem source.


Question



What is actually my problem? Why approximately yesterday I can use 3D and now can not?
How to get back my Ubuntu 3D session?

[grahammechanical]

A couple of points that I have noticed from the information that you have provided.


OpenGL vendor string: VMware, Inc

Are you running in a virtual machine? Could some setting have changed? Is there enough RAM assigned to the VM? Just guessing here.


Open GL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300)

Gallium 0.4 is the open source video driver for Nvidia cards. It is called Nouveau. Whereas, llvmpipe is a part of Nouveau that is used as a fall back mode when, either the video adapter cannot support Ubuntu Unity 3D or something has happened to stop the proprietary video driver from loading. We also get llvmpipe when we choose Resume from recovery mode.

Try activating another video driver. You will need to reboot afterwards.

this is what I see when I run that unity support test


OpenGL vendor string: nouveau
OpenGL renderer string: Gallium 0.4 on NVA5
OpenGL version string: 3.0 Mesa 10.2.3


Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes


Unity 3D supported: yes

Notice I am running Nouveau but not llvmpipe.

Actually, what you are seeing in not Unity 2D. That has long been discontinued. What you are seeing is an attempt by llvmpipe to give a Unity 3D type experience.

Regards.

[kansasnoob]

A couple of points that I have noticed from the information that you have provided.



Are you running in a virtual machine? Could some setting have changed? Is there enough RAM assigned to the VM? Just guessing here.



Gallium 0.4 is the open source video driver for Nvidia cards. It is called Nouveau. Whereas, llvmpipe is a part of Nouveau that is used as a fall back mode when, either the video adapter cannot support Ubuntu Unity 3D or something has happened to stop the proprietary video driver from loading. We also get llvmpipe when we choose Resume from recovery mode.

Try activating another video driver. You will need to reboot afterwards.

this is what I see when I run that unity support test


Notice I am running Nouveau but not llvmpipe.

Actually, what you are seeing in not Unity 2D. That has long been discontinued. What you are seeing is an attempt by llvmpipe to give a Unity 3D type experience.

Regards.

Unity-2D is still supported in Precise and will be throughout April 2017.

[kansasnoob]

I'd guess you had a recent kernel upgrade (possibly also xorg) so post the output of:


uname -a

[kostkon]

Actually, what you are seeing in not Unity 2D. That has long been discontinued. What you are seeing is an attempt by llvmpipe to give a Unity 3D type experience.
12.04 still has Unity 2d, llvmpipe was added in 12.10, if I remember correctly.

[Malsasa]

Thank you all, for your replies. My uname -a result is

Linux master 3.2.0-23-generic-pae #36-Ubuntu SMP Tue Apr 10 22:19:09 UTC 2012 i686 i686 i386 GNU/Linux

[Malsasa]

Are you running in a virtual machine? Could some setting have changed? Is there enough RAM assigned to the VM? Just guessing here.


Thank you. What a comprehensive and total answer. I installed Ubuntu on real machine, my ASUS X44C laptop. My RAM is 2 GB.



Gallium 0.4 is the open source video driver for Nvidia cards. It is called Nouveau. Whereas, llvmpipe is a part of Nouveau that is used as a fall back mode when, either the video adapter cannot support Ubuntu Unity 3D or something has happened to stop the proprietary video driver from loading. We also get llvmpipe when we choose Resume from recovery mode.

Try activating another video driver. You will need to reboot afterwards.


It seems I started to understand tonight, why my Ubuntu act very strange this last week. Maybe an unknown mechanism leads my Ubuntu to use another driver than usual (the usual is my normal stance of Ubuntu). About your sentence, "Try activating another video driver", how to do that? Glad to see your answer here. The clue --slow but sure-- comes to me. Thank you.

[Malsasa]

My problem was just solved few seconds ago by changing VGA driver from the wrong NVIDIA Noveau driver llvmpipe into Mesa DRI Intel. I have to show you my bash history until I have solved my problem by following graham clue above.

My bash History Tonight


398 history | grep xorg
399 sagr xserver-xorg-video-vmware
400 sagi xserver-xorg-video-vmware
401 sudo dpkg-reconfigure xserver-xorg
402 /usr/lib/nux/unity_support_test -p
403 dpkg -l | grep xorg-video command:
404 dpkg -l | grep xorg-video
405 xserver-xorg-video-fbdev
406 sudo dpkg-reconfigure xserver-xorg-video-fbdev
407 sudo vim /etc/X11/xorg.conf
408 sudo dpkg-reconfigure xserver-xorg
409 glxinfo
410 sagi mesa-utils
411 glxinfo
412 sudo apt-get purge nvidia*
413 dpkg -l | grep xorg-video
414 sudo apt-get purge xserver-xorg-video-nouveau
415 sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.cadangan
416 sudo apt-get install --reinstall xserver-xorg-core libgl1-mesa-glx:i386 libgl1-mesa-dri:i386 libgl1-mesa-glx:amd64 libgl1-mesa-dri:amd64
417 sudo apt-get install --reinstall xserver-xorg-core libgl1-mesa-glx:i386 libgl1-mesa-dri:i386
418 sudo vim /etc/X11/xorg.conf
419 sudo init 6

My Actual Problem

The Intel driver for my Ubuntu (Mesa DRI Intel(R) Sandybridge Mobile x86/MMX/SSE2) has accidentally and unknownly changed into Gallium 0.4 on llvmpipe (LLVM 0x300) that has no capability to handle my Unity 3D session (and furthermore caused cursor problem I have asked on askubuntu http://askubuntu.com/questions/498190/cursor-disappearing-after-starting-web-browser).

Look at these two different driver usage condition from /usr/lib/nux/unity_support_test -p command. One when my graphic was broken, one when normal/solved tonight.

Broken


OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300)
OpenGL version string: 2.1 Mesa 8.0.2

Not software rendered: no
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes

Unity 3D supported: no

Normal/Solved


OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile x86/MMX/SSE2
OpenGL version string: 3.0 Mesa 8.0.2


Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes


Unity 3D supported: yes

The Fixation Walkthrough




I searched what graham said above, my Google keyword was: ubuntu switching driver intel.
I've landed at askubuntu: http://askubuntu.com/questions/86465/switch-from-nvidia-to-internal-intel-hd-graphics-opengl-does-not-work
I followed Bruno's solution, the first answer there. Yes I have to edit the solution, though. I have to remove libgl1-mesa-glx:amd64 libgl1-mesa-dri:amd64 from the command. See my bash history above.
I rebooted by sudo init 6, my favorite fastest restart command.
Both of my problems have gone, this problem on this thread and the problem on askubuntu I mentioned above.


Conclusion

I state that my problem was solved. Thank you for all helps and attentions.