# OpenGL uses the Mesa implementation not the NVIDIA **URL:** \ **Category:** Linux\ **Tags:** opengl\ **Created:** [June 28, 2022, 2:08pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073 "2022-06-28T14:08:45Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 28, 2022, 2:08pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/1 "2022-06-28T14:08:45Z")
Dear all, I want to use OptiX therefore I need the NVIDIA implementation of the OpenGL and it turns out I am using Mesa implementation. I know there are already a lot of post for this, but I tried to reinstall the driver or tried to use the prime-select to nvidia, or tried to change it in the control panel. None of them works, can anyone help me? The basic information is: **Operating system:** Ubuntu 20.04 LTS **Output of nvidia smi:** Tue Jun 28 15:54:00 2022 ±----------------------------------------------------------------------------+ | NVIDIA-SMI 510.73.05 Driver Version: 510.73.05 CUDA Version: 11.6 | |-------------------------------±---------------------±---------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |===============================+======================+======================| | 0 NVIDIA RTX A6000 Off | 00000000:01:00.0 Off | Off | | 30% 33C P8 16W / 300W | 6MiB / 49140MiB | 0% Default | | | | N/A | ±------------------------------±---------------------±---------------------+ ±----------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=============================================================================| | No running processes found | ±----------------------------------------------------------------------------+ **Output of lshw -class display** : WARNING: you should run this program as super-user. \*-display description: VGA compatible controller product: NVIDIA Corporation vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: vga\_controller bus\_master cap\_list rom configuration: driver=nvidia latency=0 resources: iomemory:2000-1fff iomemory:2000-1fff irq:183 memory:f6000000-f6ffffff memory:20090000000-2009fffffff memory:200a0000000-200a1ffffff ioport:3000(size=128) memory:f7000000-f707ffff \*-display description: VGA compatible controller product: ASPEED Graphics Family vendor: ASPEED Technology, Inc. physical id: 0 bus info: pci@0000:69:00.0 version: 52 width: 32 bits clock: 33MHz capabilities: vga\_controller cap\_list rom configuration: driver=ast latency=0 resources: irq:181 memory:c9000000-c9ffffff memory:ca000000-ca03ffff ioport:e000(size=128) memory:c0000-dffff WARNING: output may be incomplete or inaccurate, you should run this program as super-user. **Output of lspci | grep -i vga** : (I know I have two graphics and opengl seems to use the ASPEED one) 01:00.0 VGA compatible controller: NVIDIA Corporation Device 2230 (rev a1) 69:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 52) **Output of sudo prime-select query:** (I have made it to nvidia, before it was on-demand) nvidia **Output of nvidia-settings** : (And a blank window of NVIDIA X Server Settings pops out) ERROR: Unable to load info from any available system (nvidia-settings:44901): GLib-GObject-CRITICAL \*\*: 15:55:14.096: g\_object\_unref: assertion ‘G\_IS\_OBJECT (object)’ failed \*\* Message: 15:55:14.098: PRIME: No offloading required. Abort \*\* Message: 15:55:14.098: PRIME: is it supported? no **xorg.config file content:** # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 510.73.05 Section “ServerLayout” Identifier “Layout0” Screen 0 “Screen0” InputDevice “Keyboard0” “CoreKeyboard” InputDevice “Mouse0” “CorePointer” EndSection Section “Files” EndSection Section “InputDevice” # generated from default Identifier “Mouse0” Driver “mouse” Option “Protocol” “auto” Option “Device” “/dev/psaux” Option “Emulate3Buttons” “no” Option “ZAxisMapping” “4 5” EndSection Section “InputDevice” # generated from default Identifier “Keyboard0” Driver “kbd” EndSection Section “Monitor” Identifier “Monitor0” VendorName “Unknown” ModelName “Unknown” Option “DPMS” EndSection Section “Device” Identifier “Device0” Driver “nvidia” VendorName “NVIDIA Corporation” BusID “PCI:1:0:0” EndSection Section “Screen” Identifier “Screen0” Device “Device0” Monitor “Monitor0” DefaultDepth 24 SubSection “Display” Depth 24 EndSubSection EndSection **Output of glxinfo | grep -i opengl:** OpenGL vendor string: Mesa/X.org OpenGL renderer string: llvmpipe (LLVM 12.0.0, 256 bits) OpenGL core profile version string: 4.5 (Core Profile) Mesa 21.2.6 OpenGL core profile shading language version string: 4.50 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.1 Mesa 21.2.6 OpenGL shading language version string: 1.40 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.2.6 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20 OpenGL ES profile extensions: Can anyone help me to change the opengl implementation to nvidia? If other information is needed, I will add also. Many many thanks in advance! Long [nvidia-bug-report.log.gz](https://forums.developer.nvidia.com/uploads/short-url/aG9O8CQjsEZNaEHUJCa1SLQ5Vyl.gz) (673.1 KB) ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 28, 2022, 2:30pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/2 "2022-06-28T14:30:32Z")
Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post. ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 28, 2022, 2:40pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/3 "2022-06-28T14:40:41Z")
I have added and thanks for the notification! ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 28, 2022, 5:05pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/4 "2022-06-28T17:05:20Z")
Seems the driver was only loaded 10 minutes after boot. Please reboot, then create a new nvidia-bug-report.log. ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 29, 2022, 6:14am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/5 "2022-06-29T06:14:47Z")
I have reboot and here is the new report. Thanks! [nvidia-bug-report.log.gz](https://forums.developer.nvidia.com/uploads/short-url/ecmYj0OEN1sG2cD9QB2O1jiazNp.gz) (585.7 KB) ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 29, 2022, 9:06am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/6 "2022-06-29T09:06:48Z")
Looks fine, the Xserver is now running on the nvidia gpu. It doesn’t have a monitor connected, though. Are you trying to use OptiX from remote? ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 29, 2022, 9:10am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/7 "2022-06-29T09:10:57Z")
Yes, I am using this server computer through remote desktop. Is it possible that I can run OptiX like this? ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 29, 2022, 9:19am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/8 "2022-06-29T09:19:21Z")
rdpserver/vncserver only spawns a virtual Xserver, running on cpu. If you want to use the gpu hw accel, you’ll either have to connect to the real Xserver using x11vnc/vnc0server or set up VirtualGL. Though I don’t know whether VGL is enough to run OptiX. ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 29, 2022, 11:06am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/9 "2022-06-29T11:06:10Z")
Thanks for the response! I want to connect to the real Xserver, so I have now connected the graphics directly to a monitor in the server room and I still wants to access it from remote desktop. So I have installed the x11vnc and run sudo x11vnc and it shows: 29/06/2022 13:01:17 x11vnc version: 0.9.16 lastmod: 2019-01-05 pid: 41275 29/06/2022 13:01:17 Using X display :10.0 29/06/2022 13:01:17 rootwin: 0x510 reswin: 0x3400001 dpy: 0x2135990 29/06/2022 13:01:17 29/06/2022 13:01:17 ------------------ USEFUL INFORMATION ------------------ 29/06/2022 13:01:17 X DAMAGE available on display, using it for polling hints. 29/06/2022 13:01:17 To disable this behavior use: ‘-noxdamage’ 29/06/2022 13:01:17 29/06/2022 13:01:17 Most compositing window managers like ‘compiz’ or ‘beryl’ 29/06/2022 13:01:17 cause X DAMAGE to fail, and so you may not see any screen 29/06/2022 13:01:17 updates via VNC. Either disable ‘compiz’ (recommended) or 29/06/2022 13:01:17 supply the x11vnc ‘-noxdamage’ command line option. 29/06/2022 13:01:17 29/06/2022 13:01:17 Wireframing: -wireframe mode is in effect for window moves. 29/06/2022 13:01:17 If this yields undesired behavior (poor response, painting 29/06/2022 13:01:17 errors, etc) it may be disabled: 29/06/2022 13:01:17 - use ‘-nowf’ to disable wireframing completely. 29/06/2022 13:01:17 - use ‘-nowcr’ to disable the Copy Rectangle after the 29/06/2022 13:01:17 moved window is released in the new position. 29/06/2022 13:01:17 Also see the -help entry for tuning parameters. 29/06/2022 13:01:17 You can press 3 Alt\_L’s (Left “Alt” key) in a row to 29/06/2022 13:01:17 repaint the screen, also see the -fixscreen option for 29/06/2022 13:01:17 periodic repaints. 29/06/2022 13:01:17 29/06/2022 13:01:17 XFIXES available on display, resetting cursor mode 29/06/2022 13:01:17 to: ‘-cursor most’. 29/06/2022 13:01:17 to disable this behavior use: ‘-cursor arrow’ 29/06/2022 13:01:17 or ‘-noxfixes’. 29/06/2022 13:01:17 using XFIXES for cursor drawing. 29/06/2022 13:01:17 GrabServer control via XTEST. 29/06/2022 13:01:17 29/06/2022 13:01:17 Scroll Detection: -scrollcopyrect mode is in effect to 29/06/2022 13:01:17 use RECORD extension to try to detect scrolling windows 29/06/2022 13:01:17 (induced by either user keystroke or mouse input). 29/06/2022 13:01:17 If this yields undesired behavior (poor response, painting 29/06/2022 13:01:17 errors, etc) it may be disabled via: ‘-noscr’ 29/06/2022 13:01:17 Also see the -help entry for tuning parameters. 29/06/2022 13:01:17 You can press 3 Alt\_L’s (Left “Alt” key) in a row to 29/06/2022 13:01:17 repaint the screen, also see the -fixscreen option for 29/06/2022 13:01:17 periodic repaints. 29/06/2022 13:01:17 29/06/2022 13:01:17 XKEYBOARD: number of keysyms per keycode 15 is greater 29/06/2022 13:01:17 than 4 and 443 keysyms are mapped above 4. 29/06/2022 13:01:17 Automatically switching to -xkb mode. 29/06/2022 13:01:17 If this makes the key mapping worse you can 29/06/2022 13:01:17 disable it with the “-noxkb” option. 29/06/2022 13:01:17 Also, remember “-remap DEAD” for accenting characters. 29/06/2022 13:01:17 29/06/2022 13:01:17 X FBPM extension not supported. Xlib: extension “DPMS” missing on display “:10.0”. 29/06/2022 13:01:17 X display is not capable of DPMS. 29/06/2022 13:01:17 -------------------------------------------------------- 29/06/2022 13:01:17 29/06/2022 13:01:17 Default visual ID: 0x21 29/06/2022 13:01:17 Read initial data from X display into framebuffer. 29/06/2022 13:01:17 initialize\_screen: fb\_depth/fb\_bpp/fb\_Bpl 24/32/10240 29/06/2022 13:01:17 29/06/2022 13:01:17 X display :10.0 is 32bpp depth=24 true color 29/06/2022 13:01:17 29/06/2022 13:01:17 Autoprobing TCP port 29/06/2022 13:01:17 Autoprobing selected TCP port 5900 29/06/2022 13:01:17 Autoprobing TCP6 port 29/06/2022 13:01:17 Autoprobing selected TCP6 port 5900 29/06/2022 13:01:17 listen6: bind: Address already in use 29/06/2022 13:01:17 Not listening on IPv6 interface. 29/06/2022 13:01:17 29/06/2022 13:01:17 Xinerama is present and active (e.g. multi-head). 29/06/2022 13:01:17 Xinerama: number of sub-screens: 1 29/06/2022 13:01:17 Xinerama: no blackouts needed (only one sub-screen) 29/06/2022 13:01:17 29/06/2022 13:01:17 fb read rate: 3046 MB/sec 29/06/2022 13:01:17 fast read: reset -wait ms to: 10 29/06/2022 13:01:17 fast read: reset -defer ms to: 10 29/06/2022 13:01:17 The X server says there are 10 mouse buttons. 29/06/2022 13:01:17 screen setup finished. 29/06/2022 13:01:17 29/06/2022 13:01:17 WARNING: You are running x11vnc WITHOUT a password. See 29/06/2022 13:01:17 WARNING: the warning message printed above for more info. 29/06/2022 13:01:17 The VNC desktop is: ihe-keros:0 PORT=5900 * * * Have you tried the x11vnc ‘-ncache’ VNC client-side pixel caching feature yet? The scheme stores pixel data offscreen on the VNC viewer side for faster retrieval. It should work with any VNC viewer. Try it by running: ``` x11vnc -ncache 10 ... ``` One can also add -ncache\_cr for smooth ‘copyrect’ window motion. More info: [http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching](http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching) Sorry that I am quiet new to linux and I am not sure if I am doing it correctly. But now the OptiX still doesn’t work. Can you help me with this? Thanks in advance! Long ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 29, 2022, 12:25pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/10 "2022-06-29T12:25:27Z")
> [@xueyun.long](#): > > Using X display :10.0 You connected to the ssh forwarded connection from your client. Of course, you need to connect to the server’s Xserver :0 x11vnc -display :0 ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 29, 2022, 1:04pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/11 "2022-06-29T13:04:18Z")
Then I have tried to run sudo x11vnc -display :0, the output is : 29/06/2022 15:02:02 x11vnc version: 0.9.16 lastmod: 2019-01-05 pid: 54036 No protocol specified 29/06/2022 15:02:02 XOpenDisplay(“:0”) failed. 29/06/2022 15:02:02 Trying again with XAUTHLOCALHOSTNAME=localhost … No protocol specified 29/06/2022 15:02:02 \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 29/06/2022 15:02:02 \*\*\* XOpenDisplay failed (:0) \*\*\* x11vnc was unable to open the X DISPLAY: “:0”, it cannot continue. \*\*\* There may be “Xlib:” error messages above with details about the failure. ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 29, 2022, 2:01pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/12 "2022-06-29T14:01:22Z")
You’re likely connecting to the gdm login screen, this requires running as user gdm and setting the correct -auth (ps a |grep X). Doesn’t matter though since after login, gdm spawns a new Xserver for the user session so you would lose the connection. Please switch to e.g. lightdm. ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [June 29, 2022, 2:35pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/13 "2022-06-29T14:35:26Z")
I have now installed and changed to lightdm,output of cat /etc/X11/default-display-manager: /usr/sbin/lightdm and I tried sudo x11vnc -display :0 again, still gives the same results. After searching a little bit, maybe I should turn on the x11vnc using the monitor in the server room (which is directly connected to the graphics, but not turn on x11vnc using the remote desktop?), and then I can connect with the Xserver from my windows computer using vnc viewer? Does that make sense? ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [June 29, 2022, 7:29pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/14 "2022-06-29T19:29:18Z")
You still have to set -auth. ---
**Author:** ![xueyun.long](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@xueyun.long](https://forums.developer.nvidia.com/u/xueyun.long)\ **Post date:** [July 1, 2022, 8:45am UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/15 "2022-07-01T08:45:15Z")
Thanks! It works now and really appreciate your patience and time! Have a nice weekend! ---
**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\ **Post date:** [July 20, 2022, 12:17pm UTC](https://forums.developer.nvidia.com/t/opengl-uses-the-mesa-implementation-not-the-nvidia/219073/16 "2022-07-20T12:17:14Z")
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