OpenGL 3.1 'issue'

[Snowhog]

Okay, just curious.

I have two laptops. A 32-bit and a 64-bit. Both are running Kubuntu 13.04 and KDE 4.11.1. Both are fully dist-upgraded.

On my 64-bit, I can't utilize OpenGL 3.1 without effecting the Desktop Effects (most get turned off). On the 32-bit, no such issue; I can use OpenGL 3.1.

The difference might be the GPU on each PC. The 32-bit has an Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03). The 64-bit has an Intel Corporation Core Processor Integrated Graphics Controller (rev 02).

Anyone able to confirm? Is it possible for me to utilize OpenGL 3.1 on my 64-bit laptop?

[claydoh]

it probably is the gpu. On my laptop (Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller) from circa 2008, I can't use 3.1. Well, I can, but most if not all the effects are disabled.

On my slightly newer desktop (Intel Corporation 4 Series Chipset integrated Graphics Controller) I can.

**EDIT**
Well it looks like it actually is working on the laptop, after switching effects off and on.
Both are 64 bit.

***EDIT 2***
Liar liar pants on fire, it is truly using 2.1, despite the effects settings showing ver 3 as enabled, ob both machines.

[claydoh]

I am lying ^^^^^

[GreyGeek]

Before I solved my Internet connection problem by reinstalling from scratch 12.05.3, I had KDE 4.11 and OpenGL 3.1 on this i7-3610QM and HD4000 backed by an NVIDA GT 650M using Bumblebee and Primus. Before OpenGL 2 was replaced by 3 I could get 20-30 fps on Stellarium and about 40 fps on Minecraft. With 3 I was lucky to get over 17 fps in Stellarium and about 20-25 on Minecraft.

With 12.04.3 running the nouveau driver (no Bumblebee) and OpenGL 2 with shaders, I get around 60 fps on Stellarium and 50 or so on Minecraft. That's why I locked my video drivers, among other things. I don't want my current capability destroyed by an "upgrade".

[Buddlespit]

If you open kinfo, click on the opengl tree under graphics and it will tell you the direct rendering version and indirect rendering versions that your driver (and hardware) can support.

Just as an aside, that means that if a program, like Minecraft or Stellarium, can use opengl 4.3, they will. The opengl settings in desktop effects only pertain to kwin's compositor, not for all apps.

[dmeyer]

Okay, just curious.

I have two laptops. A 32-bit and a 64-bit. Both are running Kubuntu 13.04 and KDE 4.11.1. Both are fully dist-upgraded.

On my 64-bit, I can't utilize OpenGL 3.1 without effecting the Desktop Effects (most get turned off). On the 32-bit, no such issue; I can use OpenGL 3.1.

The difference might be the GPU on each PC. The 32-bit has an Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03). The 64-bit has an Intel Corporation Core Processor Integrated Graphics Controller (rev 02).

Anyone able to confirm? Is it possible for me to utilize OpenGL 3.1 on my 64-bit laptop?

Hit me up with

glxinfo | grep OpenGL

from both machines if you can.

[GreyGeek]

glxinfo | grep OpenGL
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL version string: 3.0 Mesa 8.0.4
OpenGL shading language version string: 1.30
OpenGL extensions:

[dmeyer]

glxinfo | grep OpenGL
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL version string: 3.0 Mesa 8.0.4
OpenGL shading language version string: 1.30
OpenGL extensions:

Well there is your answer. Upgrade to a newer *buntu version, preferably 13.04 and you should get a newer mesa version. On Intel HD Graphics, OpenGL 3.1 was introuduced with Mesa 9.0.

[vinnywright]

vinny@vinny-HP-G62:~$ glxinfo | grep OpenGL

OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile x86/MMX/SSE2
OpenGL version string: 2.1 [COLOR=#ff0000][B]Mesa 9.0.3[/B][/COLOR]
OpenGL shading language version string: 1.20
OpenGL extensions:

??

VINNY

[Buddlespit]

vinny@vinny-HP-G62:~$ glxinfo | grep OpenGL

OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile x86/MMX/SSE2
OpenGL version string: 2.1 [COLOR=#ff0000][B]Mesa 9.0.3[/B][/COLOR]
OpenGL shading language version string: 1.20
OpenGL extensions:

??

VINNY

Does your graphics chip support gl v3.1? A very quick google scan says that you're chipset is limited to 2.1.

[dmeyer]

Does your graphics chip support gl v3.1? A very quick google scan says that you're chipset is limited to 2.1.

The reason for your graphics being limited to 2.1 is because you are using Intel GMA graphics which are pretty terrible.

[Snowhog]

Hit me up with

glxinfo | grep OpenGL

from both machines if you can.

From the 64-bit HP, which has 'issues' with 3.1

paul@tanagra:~$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile
OpenGL version string: 2.1 Mesa 9.1.4
OpenGL shading language version string: 1.20
OpenGL extensions:

From my 32-bit Toshiba which has no problem with 3.1:

paul@tanagra2:~$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) 945GM x86/MMX/SSE2
OpenGL version string: 1.4 Mesa 9.1.4
OpenGL extensions:

[GreyGeek]

Well there is your answer. Upgrade to a newer *buntu version, preferably 13.04 and you should get a newer mesa version. On Intel HD Graphics, OpenGL 3.1 was introuduced with Mesa 9.0.

Actually, I WAS running KDE 4.11 (from PPS) with OpenGL 3 and Mesa 9 and Stellarium gave me 17-20 fps max, Minecraft gave me about 30. I was running Bumblebee for my NVIDIA GT650M. With 12.04.3 and its nouveau driver I am getting 59 fps in Stellarium and about the same in Minecraft. I'm not going to change that.

[GreyGeek]

Bummer!
I had a perfectly running Trusty Tahr .... until this morning's update. When I rebooted I got a blank screen instead of the login screen.
When I booted into the recovery screen it wouldn't load and threw me to a console instead.
After some testing with "startx" and "startkde" I was able to determine that the boot process was trying to start my nvidia card as the primary system. Intel HD is the primary video and the only way you can use the Nividia chip is to use bbswitch (the BumbleBee switch). Well, the boot process was trying to start the desktop by using bbswitch, which gave a blank screen with backlight.

I was able to break open a console and give an apt-get command to remove nvidia and the bumblebee. During the removal it immediately stated that slightly over 1GB of files were going to be remove, and then proceeded to remove them! I was able then to reboot into a console and from there run startkde, which started up the desktop. Then I rebooted and the desktop came up normally. It's missing GL effects, like transparency behind the conky display. When I tested my acceleration using Stellarium it threw up a box which stated

This system does not support OpenGL.

I checked using Muon and all the GL apps (libgl1-mesa-*) are installed, but I cannot activate them in the systemsettings desktop advanced tab. I don't know what else was taken out with that 1GB of files. EDIT: It turns out that the nvidia kernel driver is being used, and I had two nvidia drivers installed. One from the repository and one from Nvidia via the proprietary menu option.

EDIT2: With the Nvidia drivers removed and a reboot I have OpenGL again and my canary, Stellarium, gives me 60fps. Now, I have to locate where the 1GB bomb took out by testing my various apps.

[GreyGeek]

Had to reinstall firefox because it losts its folder icons and some other glitz, but things appear back to normal now, especially in the OpenGL department:

:~$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.1.0-rc1
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.1.0-rc1
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions: