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 is this line:

[Error] Could not initialize GLX

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.

$ cat /var/log/Xorg.0.log | grep GL
[    20.545] (==) AIGLX enabled
[    20.545] Loading extension GLX
[    20.913] (EE) AIGLX error: vboxvideo does not export required DRI extension
[    20.914] (EE) AIGLX: reverting to software rendering
[    21.615] (II) AIGLX: Loaded and initialized swrast
[    21.615] (II) GLX: Initialized DRISWRAST GL provider for screen 0

$ 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  3 vboxsf
drm                   302817  1 vboxvideo

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

Any ideas what should I do?