Re: [VirtualGL-Users] extension "GLX" missing on display

[Jose R. <jos...@gm...>]

I'm trying to get this working but I don't see where the problem is. I
didn't have any *dm so I installed one to be sure that there is a
'real' X server running. Then I started vncserver from
/opt/TurboVNC/bin:

ps aux | grep X

root      2251  0.2  2.8  13012  7144 tty7     Ss+  19:33   0:03
/usr/bin/X11/X -nolisten tcp -auth /var/run/slim.auth vt07

jose      2667  0.1  3.2  12288  8036 pts/1    S<   19:45   0:01
./Xvnc :1 -desktop X -httpd ./../vnc/classes -auth
/home/jose/.Xauthority -dontdisconnect -geometry 400x300 -depth 24
-rfbwait 120000 -rfbauth /home/jose/.vnc/passwd -rfbport 5901 -fp
/usr/share/fonts/X11//misc,/usr/share/fonts/X11//75dpi,/usr/share/fonts/X11//100dpi,/usr/share/fonts/X11//Type1
-co /usr/share/X11/rgb -deferupdate 1


xdpyinfo -display :0

name of display:    :0.0
version number:    11.0
vendor string:    The X.Org Foundation
vendor release number:    10605000
X.Org version: 1.6.5
maximum request size:  16777212 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0xa00025, revert to None
number of extensions:    26
    BIG-REQUESTS
    Composite
DAMAGE
    DOUBLE-BUFFER
    DPMS
    DRI2
    GLX
    Generic Event Extension
    MIT-SCREEN-SAVER
    MIT-SHM
    RANDR
    RECORD
    RENDER
    SGI-GLX
    SHAPE
    SYNC
    X-Resource
    XC-MISC
    XFIXES
    XFree86-DGA
    XFree86-VidModeExtension
    XINERAMA
    XInputExtension
    XKEYBOARD
    XTEST
    XVideo
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1024x768 pixels (270x203 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0xfd
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store NO, save-unders NO
  largest cursor:    64x64
  current input event mask:    0x30801d
    KeyPressMask             ButtonPressMask          ButtonReleaseMask
    EnterWindowMask          ExposureMask             SubstructureRedirectMask
    FocusChangeMask
  number of visuals:    72
default visual id:  0x21
  visual:
    visual id:    0x21
    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
[...]


xdpyinfo -display :1

name of display:    :1.0
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 0x1000012, revert to Parent
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:
  dimensions:    400x300 pixels (135x102 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:    400x300
  current input event mask:    0x30801d
    KeyPressMask             ButtonPressMask          ButtonReleaseMask
    EnterWindowMask          ExposureMask             SubstructureRedirectMask
    FocusChangeMask
  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


When I try /opt/VirtualGL/bin/vglrun glxgears I obtain:

[VGL] WARNING: VirtualGL attempted and failed to obtain a Pbuffer-enabled
[VGL]    24-bit visual on the 3D X server :0.  If the application
[VGL]    subsequently fails, then make sure that the 3D X server is configured
[VGL]    for 24-bit color and has accelerated 3D drivers installed.


I have checked and apparently the card supports pbuffers...so I'm stuck.

Regards

Jose






2009/11/19 Jose Rodriguez <jos...@gm...>:
> Hello.
>
> I have the same problem that somebody on this list had some months
> ago. Specifically, when I try to run a 3D application with vglrun, it
> complains about missing the "GLX" extension. From the logs and
> comments posted in that past thread I believe that VNC is running as X
> display :0, and that I have to make sure that instead I have an X
> server with 3D capabilities running on :0, and a VNC session in
> another display. I can fire up a 'real' X server (with 3D) if I do it
> locally on the machine I'm using as a server, but I guess this is not
> what I have to do--and it doesn't help me much, in any case.
>
> I would appreciate any help you could provide.
>
> Regards
>
> Jose
>