I have a remote build-machine with Jenkins and I'm trying to run GUI application. 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:Xlib:  extension RANDR missing on display :51.(...)Xlib:  extension GLX missing on display :51.Terminating xvnc.$ vncserver -kill :51Killing Xtightvnc process ID 22513When I changed system to use Xvnc4server instead of tightvncserver, the output is:[Warning] QXcbConnection: Failed to initialize XRandr[Warning] Qt: XKEYBOARD extension not present on the X server. (...)[Warning] Unrecognized OpenGL version[Warning] Unrecognized OpenGL versionTerminating xvnc.$ vncserver -kill :47Killing Xvnc4 process ID 26522Remote 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. $ 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 boxvboxsf                 43786  0 vboxpci                23194  0 vboxnetadp             25670  0 vboxnetflt             27613  0 vboxdrv               339502  3 vboxnetadp,vboxnetflt,vboxpcivboxvideo              12658  0 vboxguest             248441  8 vboxsfdrm                   302817  1 vboxvideo$ lspci | grep VGA00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter$ glxinfo Error: unable to open display Any ideas what should I do? 
Xlib error extension GLX missing on display on VirtualBox guest OS
ubuntu;virtualbox;opengl;jenkins