GLINFO: loaded OpenGL library libGL.so!
GLINFO: loaded GLU library libGLU.so!
GLINFO: glColorSubTableEXT (2): not implemented !
X Error of failed request: XF86DGANoDirectVideoMode
Major opcode of failed request: 132 (XFree86-DGA)
Minor opcode of failed request: 22 (XDGAOpenFramebuffer)
Serial number of failed request: 18
Current serial number in output stream: 18
我是在虚拟机上装的ubuntu.这个该怎么弄了？