/var/log/Xorg.0.log - nvidia GLX error

[RageLtMan]

has anyone else been getting this?

(**) NVIDIA(0): Enabling RENDER acceleration
(EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X
(EE) NVIDIA(0): log file that the GLX module has been loaded in your X
(EE) NVIDIA(0): server, and that the module is the NVIDIA GLX module. If
(EE) NVIDIA(0): you continue to encounter problems, Please try
(EE) NVIDIA(0): reinstalling the NVIDIA driver.
(II) NVIDIA(0): NVIDIA GPU GeForce 9600M GT (G96) at PCI:1:0:0 (GPU-0)

not sure how much its affecting my system, but annoying nonetheless.

i'm running the backtrack-nvidia package (nvidia-driver etc) and ran nvidia-xconfig to make my xorg.conf.

[purehate]

ok so to get direct rendering going on bt4 pre with nvidia you need to add these options to your xorg.conf under each driver section

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 8800 GT"
BusID "PCI:3:0:0"
Screen 0
Option "AddARGBGLXVisuals" "true"
Option "Coolbits" "1"
Option "RenderAccel" "true"
EndSection

Also add the composite section at the end.
Section "Extensions"
Option "Composite" "Enable"
EndSection



Then restart X

To check if its working just apt-get install mesa-utils

The run glxinfo | grep rendering to see if its working like this...

root@bt:~# glxinfo |grep rendering
direct rendering: Yes

Should be all squared away after that

[monovitae]

I have attempted to follow your instructions purehate, however after doing so and restarting X glxinfo | grep rendering returns 'Error : glXCreateContext failed'

Heres my xorg.conf if you get a moment maybe you could point out the error of my ways?

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder63)  Thu Apr 30 17:37:55 PDT 2009

Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/X11/misc"
    FontPath        "/usr/share/fonts/X11/cyrillic"
    FontPath        "/usr/share/fonts/X11/100dpi/:unscaled"
    FontPath        "/usr/share/fonts/X11/75dpi/:unscaled"
    FontPath        "/usr/share/fonts/X11/Type1"
    FontPath        "/usr/share/fonts/X11/100dpi"
    FontPath        "/usr/share/fonts/X11/75dpi"
    FontPath        "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
    Load           "extmod"
    Load           "xtrap"
    Load           "dbe"
    Load           "glx"
    Load           "record"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
EndSection

Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "SWcursor"               # [<bool>]
        #Option     "HWcursor"               # [<bool>]
        #Option     "NoAccel"                # [<bool>]
        #Option     "ShadowFB"               # [<bool>]
        #Option     "UseFBDev"               # [<bool>]
        #Option     "Rotate"                 # [<str>]
        #Option     "VideoKey"               # <i>
        #Option     "FlatPanel"              # [<bool>]
        #Option     "FPDither"               # [<bool>]
        #Option     "CrtcNumber"             # <i>
        #Option     "FPScale"                # [<bool>]
        #Option     "FPTweak"                # <i>
        #Option     "DualHead"               # [<bool>]
    Identifier     "Card0"
    Driver         "nvidia"
    VendorName     "nVidia Corporation"
    BoardName      "Unknown Board"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    Option "AddARGBGLXVisuals" "true"
    Option "Coolbits" "1"
    Option "RenderAccel" "true"
    SubSection     "Display"
        Viewport    0 0
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       4
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       8
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       15
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       16
    EndSubSection
    SubSection     "Display"
        Viewport    0 0
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
    Option "Composite" "Enable"
EndSection

[purehate]

well you put it under screens instead of device. I would get rid of all that other garbage and make it look like this. If that doesn't work we will investigate further.

Section "Device"
Identifier "Card0"
Driver "nvidia"
VendorName "nVidia Corporation"
BoardName "Unknown Board"
Option "AddARGBGLXVisuals" "true"
Option "Coolbits" "1"
Option "RenderAccel" "true"
EndSection

[monovitae]

Thanks for the quick reply. I have modified /etc/X11/xorg.conf to look like this.

Section "Device"
    Identifier "Card0"
    Driver "nvidia"
    VendorName "nVidia Corporation"
    BoardName "Unknown Board"
    BusID "PCI:1:0:0"
    Screen 0
    Option "AddARGBGLXVisuals" "true"
    Option "Coolbits" "1"
    Option "RenderAccel" "true"
EndSection

Section "Extensions"
    Option "Composite" "Enable"
EndSection

This results in the same error when running glxinfo | grep rendering.

Removing

    BusID "PCI:1:0:0"

and

Section "Extensions"
    Option "Composite" "Enable"
EndSection

Making it look exactly like your post also has no effect.

Other new information I have come across that may or may not be useful. When stopping x the console shows the following.

(EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X log file that the Glx module has been loaded in your X server, and that the module is the NVIDIA GLX module. If you encouter problems please try reinstalling the NVIDIA driver.

Upon reinstalling the driver via

 apt-get install -reinstall nvidia-driver

Starting X fails with an error to the effect that the number of screens don't match. This can be rectified so you can actually start X by manually modifing the xorg.conf to what I have listed above or by running the nvidia configuration utilitiy.

I also poked around in /var/log/Xorg.0.log as the error suggested and the only thing that seemed possibly relevent to me was

(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions//libglx.so
(II) Module glx: vendor="X.Org Foundation"

Just seemed like a possible culprit because the error wanted it to use the nvidia glx, but I could definitely be barking up the wrong tree here.

Anyway thats all I know for now if theres any other info I can provide to help such as the rest of my /var/log/Xorg.0.log or somethign let me know I just didn't want to make a giant post full of useless crap.

Thanks again not only for the rapid response on this issue but for all your BT 4 effort in general. Aside from this little quirk everything has been working wonderfully for me with pre-final, and this problem here is not something I would describe as a 'necessary' feature by any means.

[monovitae]

Some further investigation into my issue has revealed the following. If I remove nivida-driver via apt-get remove then reinstall. Then modify xorg.conf to read.

Section "Device"
        Identifier  "Card0"
        Driver      "nvidia"
        VendorName  "nVidia Corporation"
        BoardName   "Unknown Board"
        Option "AddARGBGLXVisuals" "true"
        Option "Coolbits" "1"
        Option "RenderAccel" "true"
EndSection

Section "Extensions"
        Option "Composite" "Enable"
EndSection

With this setup glxinfo | grep rendering is successful and glxgears works wonderfully. So proceeding from there installing cpyrit-cuda appears successful, and rendering is still functioning however when running pyrit list_cores the gpu is not seen and is not utilized in the benchmark. I tried giving

apt-get install --reinstall pyrit cpyrit-cuda

a shot, but it didn't change the situation.

The piviot point in this whole affair appears to be when installing 'cuda-toolkit'. If that is installed the situation flips to glxinfo | grep rendering returning Error: glXCreateContext failed. However pyrit then fuctions as expected identifying the gpu in list_cores and benchmarking properly.

So it would seem that cuda-toolkit is overwriting something essential. I've tried. Preforming an 'apt-get install --reinstall nvidia-driver' after I've installed cuda-toolkit but it dosen't seem to change anything as in pyrit works rendering dosen't.