"Unrecognized OpenGL version" under VirtualBox

**trivelt** · 2nd September 2014, 08:37

Hi!
I have a remote build-machine with Jenkins and I'm trying to run GUI application written in Qt 5 (my version is 5.2.1). In Jenkins I installed Xvnc plugin, which uses TightVNC Server, but each build has failed.
Earlier, there was a problem with loading driver swrast (by libGL), currently in the log there are this lines:

Qt Code:

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Xlib:  extension "RANDR" missing on display ":51".
(...)
Xlib:  extension "GLX" missing on display ":51".
Terminating xvnc.
$ vncserver -kill :51
Killing Xtightvnc process ID 22513

Xlib:  extension "RANDR" missing on display ":51".
(...)
Xlib:  extension "GLX" missing on display ":51".
Terminating xvnc.
$ vncserver -kill :51
Killing Xtightvnc process ID 22513

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When I changed system to use Xvnc4server instead of tightvncserver, the output is:

Qt Code:

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[Warning] QXcbConnection: Failed to initialize XRandr
[Warning] Qt: XKEYBOARD extension not present on the X server. 
(...)
[Warning] Unrecognized OpenGL version
[Warning] Unrecognized OpenGL version
Terminating xvnc.
$ vncserver -kill :47
Killing Xvnc4 process ID 26522

[Warning] QXcbConnection: Failed to initialize XRandr
[Warning] Qt: XKEYBOARD extension not present on the X server. 
(...)
[Warning] Unrecognized OpenGL version
[Warning] Unrecognized OpenGL version
Terminating xvnc.
$ vncserver -kill :47
Killing Xvnc4 process ID 26522

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Remote desktop is Ubuntu 14.04 running over VirtualBox, so I installed VBoxAddons but it didn't resolve the problem. Below I'm putting some logs, maybe helpful for you.

Qt Code:

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$ cat /var/log/Xorg.0.log | grep GL -is
[266219.686] (II) LoadModule: "glx"
[266219.686] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/extensions/libglx.so
[266219.687] (II) Module glx: vendor="Advanced Micro Devices, Inc."
[266219.687] Loading extension GLX
[266219.687] (==) Assigned the driver to the xf86ConfigLayout
 
 
$ lsmod | grep box
vboxsf                 43786  0 
vboxpci                23194  0 
vboxnetadp             25670  0 
vboxnetflt             27613  0 
vboxdrv               339502  3 vboxnetadp,vboxnetflt,vboxpci
vboxvideo              12658  0 
vboxguest             248441  8 vboxsf
drm                   302817  1 vboxvideo
 
$ lspci | grep VGA
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter
 
$ glxinfo 
Error: unable to open display

$ cat /var/log/Xorg.0.log | grep GL -is
[266219.686] (II) LoadModule: "glx"
[266219.686] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/extensions/libglx.so
[266219.687] (II) Module glx: vendor="Advanced Micro Devices, Inc."
[266219.687] Loading extension GLX
[266219.687] (==) Assigned the driver to the xf86ConfigLayout


$ lsmod | grep box
vboxsf                 43786  0 
vboxpci                23194  0 
vboxnetadp             25670  0 
vboxnetflt             27613  0 
vboxdrv               339502  3 vboxnetadp,vboxnetflt,vboxpci
vboxvideo              12658  0 
vboxguest             248441  8 vboxsf
drm                   302817  1 vboxvideo

$ lspci | grep VGA
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter

$ glxinfo 
Error: unable to open display

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I found informations about warning " Unrecognized OpenGL version" as a bug in older Qt versions, but what is solution for my problem?

**anda_skoa** · 2nd September 2014, 08:57

Since this is for a continuous integration system, have you tried using the "minimal" platform plugin instead?
As far as I understand this even works headless, i.e. wihout VNC

Cheers,
_

**trivelt** · 2nd September 2014, 10:25

What do you mean writing about "minimal platform"? Previously I tried to run (over Jenkins) Qt GUI applications without VNC and theoretically it worked, but I had other problem because of this.

**anda_skoa** · 2nd September 2014, 11:48

One of the Qt platform abstraction plugins is called "minimal", the output is something like libqminimal.so
There is also a variant that has OpenGL, "minimalegl" respectively "libqminimalegl.so"

See qtbase/src/plugins/platforms/minimal and qtbase/src/plugins/platforms/minimalegl

Cheers,
_

**faldzip** · 2nd September 2014, 13:56

Qt Code:

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$ glxinfo 
Error: unable to open display

$ glxinfo 
Error: unable to open display

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Did you run this over ssh? What happen if you run this:

Qt Code:

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DISPLAY=:0 glxinfo

DISPLAY=:0 glxinfo

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?

**trivelt** · 3rd September 2014, 09:14

Yes, I run it over ssh.

Qt Code:

Switch view

$DISPLAY=:0 glxinfo 
name of display: :0
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  12
  Current serial number in output stream:  12

$DISPLAY=:0 glxinfo 
name of display: :0
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  12
  Current serial number in output stream:  12

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It looks bad, but I have an access to another remote server with Jenkins (and Ubuntu 12.04 with Qt 4.8) and glxinfo (with DISPLAY=:0) gives the same result. And in spite of it, all works fine. I read here that "Unrecognized OpenGL version" warning is caused by unexpected by Qt format of OpenGL string version (VirtualBox graphic drivers...), is it true?

**faldzip** · 3rd September 2014, 10:52

Did you try running the "DISPLAY=:0 glxgears -info" ?

**trivelt** · 4th September 2014, 10:23

Yes, I tried it, but result of "DISPLAY=:0 glxgears -info" is the same as "DISPLAY=:0 glxinfo". Maybe there is other way to run GUI Qt application on Jenkins (not using VNC)? I don't know to what extent this is related to Qt, but this is the only forum, where somebody replies.

**anda_skoa** · 4th September 2014, 11:18

So, have you tried the minimal backends?
Or do you absolutely have to see the visual output?

Cheers,
_

**trivelt** · 5th September 2014, 06:52

When I'm using the "-platform minimal", my GUI app starts over SSH, but only for one user. If I'm logged on "jenkins" user:

Qt Code:

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No protocol specified
 
(myApp:6080): Gtk-WARNING **: cannot open display: :0

No protocol specified

(myApp:6080): Gtk-WARNING **: cannot open display: :0

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I did "xhost +localhost", but it didn't resolve the problem.

Running with "platform -minimalegl" causes:

Qt Code:

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No protocol specified
No protocol specified
libEGL warning: DRI2: xcb_connect failed
No protocol specified
libEGL warning: DRI2: xcb_connect failed
No protocol specified
No protocol specified
libEGL warning: GLX: XOpenDisplay failed
07:30:34.553 [Warning] Could not initialize egl display
 
07:30:34.554 [Error] EGL error
Aborted (core dumped)

No protocol specified
No protocol specified
libEGL warning: DRI2: xcb_connect failed
No protocol specified
libEGL warning: DRI2: xcb_connect failed
No protocol specified
No protocol specified
libEGL warning: GLX: XOpenDisplay failed
07:30:34.553 [Warning] Could not initialize egl display

07:30:34.554 [Error] EGL error
Aborted (core dumped)

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when I'm logged on "jenkins", and:

Qt Code:

Switch view

07:31:49.580 [Warning] Opened display 0x15283b0
 
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  13
  Current serial number in output stream:  13

07:31:49.580 [Warning] Opened display 0x15283b0

X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  13
  Current serial number in output stream:  13

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on a second user.

And one more thing: When I'm running from non-jenkins user with "-platform minimal" it looks ok, but after [Ctrl]+[C] (to stop application), I see on the console:

Qt Code:

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07:32:35.076 [Warning] WARNING: The web process experienced a crash on ''.
07:32:35.077 [Warning] WARNING: The web process experienced a crash on ''.
07:32:35.082 [Warning] This plugin does not support createPlatformOpenGLContext!
07:32:35.083 [Warning] QtQuick: failed to create OpenGL context

07:32:35.076 [Warning] WARNING: The web process experienced a crash on ''.
07:32:35.077 [Warning] WARNING: The web process experienced a crash on ''.
07:32:35.082 [Warning] This plugin does not support createPlatformOpenGLContext!
07:32:35.083 [Warning] QtQuick: failed to create OpenGL context

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**anda_skoa** · 5th September 2014, 07:57

Hmm, what about the offscreen platform?

Cheers,
_

**trivelt** · 5th September 2014, 08:03

I tested all available platforms:
offscreen, kms, linuxfb, minimal:

Qt Code:

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(myApp:22797): Gtk-WARNING **: cannot open display: :0

(myApp:22797): Gtk-WARNING **: cannot open display: :0

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kms:

Qt Code:

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pci id for fd 7: 80ee:beef, driver (null)
No protocol specified
pci id for fd 7: 80ee:beef, driver (null)
No protocol specified
pci id for fd 9: 80ee:beef, driver (null)
pci id for fd 9: 80ee:beef, driver (null)
No protocol specified
pci id for fd 9: 80ee:beef, driver (null)
No protocol specified
pci id for fd 10: 80ee:beef, driver (null)
pci id for fd 10: 80ee:beef, driver (null)
No protocol specified
pci id for fd 10: 80ee:beef, driver (null)
No protocol specified
pci id for fd 11: 80ee:beef, driver (null)
pci id for fd 11: 80ee:beef, driver (null)
No protocol specified
pci id for fd 11: 80ee:beef, driver (null)
08:42:58.322 [Warning] Could not initialize EGL display
08:42:58.322 [Error] EGL error
Aborted (core dumped)

pci id for fd 7: 80ee:beef, driver (null)
No protocol specified
pci id for fd 7: 80ee:beef, driver (null)
No protocol specified
pci id for fd 9: 80ee:beef, driver (null)
pci id for fd 9: 80ee:beef, driver (null)
No protocol specified
pci id for fd 9: 80ee:beef, driver (null)
No protocol specified
pci id for fd 10: 80ee:beef, driver (null)
pci id for fd 10: 80ee:beef, driver (null)
No protocol specified
pci id for fd 10: 80ee:beef, driver (null)
No protocol specified
pci id for fd 11: 80ee:beef, driver (null)
pci id for fd 11: 80ee:beef, driver (null)
No protocol specified
pci id for fd 11: 80ee:beef, driver (null)
08:42:58.322 [Warning] Could not initialize EGL display
08:42:58.322 [Error] EGL error
Aborted (core dumped)

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xcb:

Qt Code:

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No protocol specified
08:44:35.494 [Error] QXcbConnection: Could not connect to display :0
Aborted (core dumped)

No protocol specified
08:44:35.494 [Error] QXcbConnection: Could not connect to display :0
Aborted (core dumped)

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**faldzip** · 5th September 2014, 13:26

Okay, so to clarify - all your tests from previous post was done through VNC?
Did you try running your Qt app on local VirtualBox machine?

**trivelt** · 12th September 2014, 09:45

Sorry for long silence. I resolved the problem by typing "xhost +SI:localuser:jenkins" and using "-platform minimal". Thank you all for your help!

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