qt ubuntu opengl not supported

jhovarie · 4 Jun 2018, 04:22

ubuntu opengl not supported
I connect to my azure ubuntu server using tightvnc and open the terminal.

I check if opengl is supported using the fallowing command.

First command using "glxgears" The results Error: couldn't get an RGB, Double-buffered visual
Second command using "glxinfo" The results name of display: :1.0 Error: couldn't find RGB GLX visual or fbconfig

Is this mean that my ubuntu server doest not support opengl?

Also I tried to install QT creator to ubuntu server. I tried to create project and run it. I get error like

GLX extension not found
screen shot.

Is this graphics driver issue? how to fixed this

jsulm · 4 Jun 2018, 06:52

@jhovarie First question is: does your app have an UI?
Usually you don't run UI apps on a server.
If your app does not have an UI then remove "gui" and "widgets" from "QT +=" in your pro file. Rerun qmake and rebuild.

mrjj · 6 Apr 2018, 06:31

just as a note:

tightvnc as far as i know, does not support openGl.
only VirtualGL and TurboVNC

Also indicated by glxgears not running.

jhovarie · J jsulm 4 Jun 2018, 04:22

@jsulm said in qt ubuntu opengl not supported:

@jhovarie First question is: does your app have an UI?
Usually you don't run UI apps on a server.
If your app does not have an UI then remove "gui" and "widgets" from "QT +=" in your pro file. Rerun qmake and rebuild.

my app on server has a UI window but I hide it in other word it doest not have UI. but I need opengl needed support because it converts videos.

jhovarie · M mrjj 4 Jun 2018, 06:30

@mrjj said in qt ubuntu opengl not supported:

rbo

Ok I will try VirtualGL and TurboVNC I will go back here to report what happen next.

jhovarie · M mrjj 4 Jun 2018, 06:30

@mrjj

Hello I already install turbovnc on my windows client and virtualgl on ubuntu server.. I connect to my server using turbovnc and open terminal then I type vglrun glxgears the result is No protocol specified [VGL] ERROR: Could not open display :0. any help how to fixed this?

mrjj · 5 Jun 2018, 08:21

@jhovarie

protocol specified [VGL] ERROR

No sure. can be many things.
sometimes you just need to export display :0

did you follow guide ?
https://gist.github.com/cyberang3l/422a77a47bdc15a0824d5cca47e64ba2

jhovarie · M mrjj 5 Jun 2018, 06:16

@mrjj

Hey its working now vglrun glxgears and vglrun glxinfo commands is working now on clound.. but the error from qt doest not fixed same error I get.. is this because some plugin is not loaded like this?

mrjj · 5 Jun 2018, 08:44

Hi
Did you try run Creator same was as with glxgears ? ( via vglrun )

jhovarie · 6 May 2018, 08:48

@mrjj

Hey I tried this code vglrun ./qtcreator the qt runs and The error plugin loader message is gone.. but if I tried to run the qt app I get error message like the fallowing.

X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 72 (X_PutImage)
Serial number of failed request: 41
Current serial number in output stream 54

How to fixed this? thanks in advance...

mrjj · wrote on 5 Jun 2018, 08:58

@jhovarie

Hi
Sorry i dont know what it is.
however, BadMatch and X_PutImage on google
seems to talk about color depth.
Make sure to read the docs
https://virtualgl.org/vgldoc/2_1_1/
and check color depth if your X session etc.