Qt: Xlib: extension "NV-GLX" missing on display ":0"

Ibrahim

Hi; I use Material Design on my apps (QtQuickControls 2 apps). My basic code is here:

import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.0

import QtQuick.Controls.Material 2.0

ApplicationWindow {
  visible: true
  width: 640
  height: 480
  title: qsTr("QtQuickControls2 Test")

  Material.theme: Material.Dark
  Material.accent: Material.Purple

  Column {
    anchors.centerIn: parent

    RadioButton { text: qsTr("Radio Button 1") }
    RadioButton { text: qsTr("Radio Button 2") }
    RadioButton { text: qsTr("Radio Button 3") }
  }
}

But when I ran my material design app on desktop and Android (Genymotion), I see my app style is Qt Default style. I get this error on the desktop app: Xlib: extension "NV-GLX" missing on display ":0".
I use Ubuntu 16.04 x64 and Nvidia driver. When I selected Xlib (open source) driver, Genymotion isn't running this time too.
How can I use material design? What is this error? Thanks.

mrjj

Hi , have you tested your opengl on the desktop is happy? ( with glxgears or something like that)
Googling this error suggest its a driver issue
https://ubuntuforums.org/archive/index.php/t-1822396.html
(last post)