Yes, it appears that, for some reason, VNC is running as X display :0, which is not what you want. Perhaps a system administrator configured your server machine to be headless? That's the only reason I can think of that VNC would be running as the main X display.
In the server machine, you want a "real" X server, i.e. Xorg, running on display :0 with a 3D graphics card attached and the accelerated drivers for that 3D card installed and running. You want this X server to be running in 24-bit mode. We call this the "3D X server", because it's where VirtualGL sends 3D commands to be rendered. Then, you want another X server to act as the actual display. This "2D X server" can be located on the client machine across the network from the server machine, or the 2D X server can be a VNC session or other X proxy session on the server machine. The 2D X server does not need to have 3D capabilities. Peterson, David A (COMSYS) wrote: >>From the looks of that output X isn't running on the "server". Try firing up >>xdm/gdm/whatever on the VNC server (:0 should typically not be your VNC >>vendor in my experience). > > -----Original Message----- > From: Rick Harris [mailto:rickhar...@mightylegends.org] > Sent: Fri 8/7/2009 6:32 AM > To: virtualgl-users@lists.sourceforge.net > Subject: Re: [VirtualGL-Users] Little help ... extension "GLX" missing > ondisplay > > DRC wrote: > >> Change the color depth to 24-bit in your xorg.conf file. > > I've done this on both the server and client for /etc/X11/xorg.conf with the > same error. > > xdpyinfo confirms that the X session is running in 24-bit mode ... > > ~ # DISPLAY=:0.0 xdpyinfo > name of display: :0.0 > version number: 11.0 > vendor string: AT&T Laboratories Cambridge > vendor release number: 3332 > maximum request size: 4194300 bytes > motion buffer size: 256 > bitmap unit, bit order, padding: 32, LSBFirst, 32 > image byte order: LSBFirst > number of supported pixmap formats: 2 > supported pixmap formats: > depth 1, bits_per_pixel 1, scanline_pad 32 > depth 24, bits_per_pixel 32, scanline_pad 32 > keycode range: minimum 8, maximum 255 > focus: window 0x1000010, revert to PointerRoot > number of extensions: 7 > BIG-REQUESTS > MIT-SHM > MIT-SUNDRY-NONSTANDARD > SHAPE > SYNC > XC-MISC > XTEST > default screen number: 0 > number of screens: 1 > > screen #0: > print screen: no > dimensions: 1240x900 pixels (420x305 millimeters) > resolution: 75x75 dots per inch > depths (1): 24 > root window id: 0x25 > depth of root window: 24 planes > number of colormaps: minimum 1, maximum 1 > default colormap: 0x21 > default number of colormap cells: 256 > preallocated pixels: black 0, white 16777215 > options: backing-store YES, save-unders YES > largest cursor: 1240x900 > current input event mask: 0xd8001f > KeyPressMask KeyReleaseMask ButtonPressMask > ButtonReleaseMask EnterWindowMask SubstructureNotifyMask > SubstructureRedirectMask PropertyChangeMask ColormapChangeMask > number of visuals: 1 > default visual id: 0x22 > visual: > visual id: 0x22 > class: TrueColor > depth: 24 planes > available colormap entries: 256 per subfield > red, green, blue masks: 0xff0000, 0xff00, 0xff > significant bits in color specification: 8 bits > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > VirtualGL-Users mailing list > VirtualGL-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtualgl-users > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > > > ------------------------------------------------------------------------ > > _______________________________________________ > VirtualGL-Users mailing list > VirtualGL-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtualgl-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
