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Thread: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

  1. #1
    Join Date
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    Ubuntu Development Release

    Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Distro: Ubuntu 11.04-beta1 'natty'
    Problem: 'your hardware does not support Unity; you will be using Ubuntu Classic.'

    Installed: nvidia-common 0.2.28,
    nvidia-current 270.30-0ubuntu3,
    nvidia-settings 270.29-0ubuntu1,
    linux-image-generic-pae 2.6.38.7.21,
    linux-headers-generic-pae 2.6.38.8.22


    Symptoms:
    moses@deunan:~$ glxinfo
    name of display: :0.0
    Error: couldn't find RGB GLX visual or fbconfig

    moses@deunan:~$ lsmod |grep nvidia
    nvidia 9736626 34

    moses@deunan:~$ egrep '\((EE|WW|NI)\)' /var/log/Xorg.0.log
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
    [ 1882.609] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
    [ 1882.609] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
    [ 1882.609] (WW) Disabling Keyboard0
    [ 1882.609] (WW) Disabling Mouse0
    ... (that is to say, no errors)

    moses@deunan:~$ egrep -i 'glx|nvidia' /var/log/Xorg.0.log
    [ 1882.611] (II) "glx" will be loaded. This was enabled by default and also specified in the config file.
    [ 1882.611] (II) LoadModule: "glx"
    [ 1882.611] (II) Loading /usr/lib/xorg/extra-modules/libglx.so
    [ 1882.636] (II) Module glx: vendor="NVIDIA Corporation"
    [ 1882.637] (II) NVIDIA GLX Module 270.30 Fri Feb 25 14:51:42 PST 2011
    [ 1882.637] (II) Loading extension GLX
    [ 1882.638] (II) LoadModule: "nvidia"
    [ 1882.638] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
    [ 1882.639] (II) Module nvidia: vendor="NVIDIA Corporation"
    [ 1882.639] (II) NVIDIA dlloader X Driver 270.30 Fri Feb 25 14:36:05 PST 2011
    [ 1882.639] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
    [ 1882.654] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
    [ 1884.656] (II) Loading extension NV-GLX
    [ 1884.702] (II) Initializing extension GLX

    ... (again, no errors. Xorg says the glx module is loaded just fine.)


    moses@deunan:~$ dmesg |grep unity
    [ 1894.457837] unity_support_t[5990]: segfault at 48 ip b761f473 sp bfd8ec60 error 4 in libGL.so.1.2[b75ed000+58000]

    moses@deunan:~$ locate libGL.so.1.2
    /usr/lib/mesa/libGL.so.1.2

    (... so unity_support_t is linking in the mesa library, not /usr/lib/nvidia-current/libGL.so.1 as I would expect)

    After reading a few other threads on the matter, I suspect the problem is with the 'nvidia-current' package more than the libgl1-mesa-glx or unity packages. ... though it does seem odd that Unity doesn't have a non-OpenGL verison.

    If I find a solution, I'll come back. I hope the answer isn't "ditch nvidia-current for the binary install script from nVidia direct."
    If someone found this thread in a search, the nVidia driver install scripts can be found at http://www.nvidia.com/object/linux_display_archive.html

  2. #2
    Join Date
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    Ubuntu Development Release

    Unhappy Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Came back from the nVidia website. Here's what I found:

    Over there, version '260.19.44' is most recent, but I remember that Ubuntu's packages mention version '270.xx.xx' so I also grabbed 'Version: 270.18'. Results were the same for both.

    Switched to one of the consoles, logged in and 'sudo -i' to root.
    'service gdm stop'
    'rmmod nvidia'
    'dpkg --purge nvidia-current'
    'sh NVIDIA-Linux-x86-260.19.44.run'
    ... it will warn that the distro pre-install script failed. That's just a speed-bump that Ubuntu put in to make sure you don't install unsupported drivers by accident.

    'startx' ... failed.
    [ 4290.628] (II) LoadModule: "nvidia"
    [ 4290.629] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
    [ 4290.629] (II) Module nvidia: vendor="NVIDIA Corporation"
    [ 4290.629] compiled for 4.0.2, module version = 1.0.0
    [ 4290.629] Module class: X.Org Video Driver
    [ 4290.629] ================ WARNING WARNING WARNING WARNING ================
    [ 4290.629] This server has a video driver ABI version of 10.0 that is not
    supported by this NVIDIA driver. Please check
    http://www.nvidia.com/ for driver updates or downgrade to an X
    server with a supported driver ABI.
    [ 4290.630] ================================================== ===============
    [ 4290.630] (EE) NVIDIA: Use the -ignoreABI option to override this check.
    [ 4290.630] (II) UnloadModule: "nvidia"
    [ 4290.630] (II) Unloading nvidia
    [ 4290.630] (EE) Failed to load module "nvidia" (module requirement mismatch, 0)
    [ 4290.630] (EE) No drivers available.


    'sh ./NVIDIA-Linux-x86-260.19.44.run --uninstall' to clean it out.
    Tried the same with 'NVIDIA-Linux-x86-260.19.44.run' and got the same 'ABI version 10' error.

    So looks like I'm stuck with package nvidia-current 270.30-0ubuntu3 , which Xorg happily thinks has OpenGL / GLX support, until it actually tries to use it. Bleah.

    I'll keep trying with Ubuntu 11.04 'natty', and report back to this thread if I find anything.

  3. #3
    Join Date
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    Ubuntu Development Release

    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Found it.

    Since glxinfo was one of the programs having trouble, I tried 'ldd /usr/bin/glxinfo' to see what libraries it was loading.

    moses@deunan:~$ ldd /usr/bin/glxinfo
    linux-gate.so.1 => (0xb7776000)
    libGL.so.1 => /usr/lib/libGL.so.1 (0xb768e000)


    Checking on that, I tried 'dpkg -S /usr/lib/libGL.so.1' and discovered it was part of package 'libgl1-mesa-dev'. So I removed it.

    Still didn't work -- ldconfig remade the file. (?!) ldconfig made it as a softlink to libGL.so.1.2, so I asked 'dpkg -S /usr/lib/libGL.so.1.2' and I got "no path found matching pattern', so that means this library didn't come from an Ubuntu package. (???) I couldn't just remove it either, because then /usr/bin/vi would stop working because it couldn't find libGL.so.1 (!!!)

    On a hunch, and after seeing the contents of /etc/ld.so.conf.d/GL.conf = '/usr/lib/nvidia-current/', I deleted /usr/lib/libGL.so.1 and /usr/lib/libGL.so.1.2, and re-ran 'ldconfig' to remake the LD path.

    /bin/rm /usr/lib/libGL.so.1 /usr/lib/libGL.so.1.2
    ldconfig
    ldd /usr/bin/glxinfo
    ...linux-gate.so.1 => (0xb78a7000)
    ...libGL.so.1 => /usr/lib/nvidia-current/libGL.so.1 (0xb77bf000)
    ...libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xb76a4000)


    So things seem better now, and I was able to restart the X server with 'sudo service gdm restart' and log in using Unity again.

  4. #4
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Very common problem. libGL.so.1.2 occurs in at least two Ubuntu packages, neither of which are the GLX driver you want with nVidia proprietary drivers. ldconfig attempts to create symlinks to the "most recent" version of each driver but doesn't always get it right, especially with this type of driver where objects are kept in different directories. It is always best to try and uninstall whatever you had before you install nVidia drivers, but keep an eye on those symlinks anyways.

  5. #5
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Quote Originally Posted by lithopsian View Post
    Very common problem. ..with nVidia proprietary drivers.
    Ah, thanks, I figured that would be the case.

    I woudln't have installed the non-Ubuntu drivers, except when I upgraded to 11.04 natty, all of the Nvidia drivers were gone, and thus I had no X-windows. The documentation on installing video drivers always says to use the GUI tool... which is impossible to use when I have no X-windows (catch-22). I was forced to use /usr/bin/lynx to get the drivers from the Nvidia website and install those into the kernel and initrd. Un-installing the nvidia drivers from nvidia seems to be an awful mess, since I've re-un-installed them three times, installed the drivers from ubuntu twice, and apport still complains to me that I'm using nVidia drivers that didn't come from Ubuntu.

  6. #6
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Thanks for this post!
    I was having this problem after several drastic configuration changes.

  7. #7
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    What is the solution? I have exactly the same problem as the OP. To give some background, I had the proprietary nVidia drivers installed manually, and then tried to uninstall them and use nvidia-current from jockey. glxinfo, glxgears, and unity do not work. An explanation of the solution would be appreciated!

  8. #8
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    @Mozai

    Thanks for your posts. They fixed a longstanding problem (since 11.04) I've had with an ATI 5750 using both the binary and open-source drivers. I'm replying with more details in the hopes that someone with similar problems can find it.

    My desktop machine has never supported unity. When I ran "/usr/lib/nux/unity_support_test -p" it always returned "gl vertex buffer object: no". So in 11.04 I stuck with the gnome-shell, but after installing 11.10 I decided to try solving the problem. After poking around online, I tried running "glxinfo | grep rendering" and found out that direct rendering was disabled (direct rendering: no).

    After some more poking around online, I found that /usr/lib/fglrx/dri/swrast_dri.so didn't exist and that it should. So I ran "sudo apt-get install libgl1-mesa-swrast" and added a symbolic link to /usr/lib/fglrx/dri/.

    But then, running glxinfo returned "Error: couldn't find RGB GLX visual or fbconfig", which is how I came across your post. At this point, I was willing to try just about anything, so I followed your tip and deleted usr/lib/libGL.so.1 and /usr/lib/libGL.so.1.2 and reran "sudo ldconfig".

    And lo and behold, it finally worked. So thanks for that. This was an *extremely* frustrating problem to solve and I'm a little giddy that it's finally gone.

  9. #9
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    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Thanks Mozai, this was also the problem in Fedora. I ended up with libGL.* in /usr/lib/ , /usr/local/lib, and /lib. Once all of those were removed, and a new run of ldconfig all was working again.

  10. #10
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    Ubuntu 10.10 Maverick Meerkat

    Re: Nvidia, Unity, glxinfo couldn't find RGB GLX visual

    Quote Originally Posted by jcdoll View Post
    @Mozai

    Thanks for your posts. They fixed a longstanding problem (since 11.04) I've had with an ATI 5750 using both the binary and open-source drivers. I'm replying with more details in the hopes that someone with similar problems can find it.

    My desktop machine has never supported unity. When I ran "/usr/lib/nux/unity_support_test -p" it always returned "gl vertex buffer object: no". So in 11.04 I stuck with the gnome-shell, but after installing 11.10 I decided to try solving the problem. After poking around online, I tried running "glxinfo | grep rendering" and found out that direct rendering was disabled (direct rendering: no).

    After some more poking around online, I found that /usr/lib/fglrx/dri/swrast_dri.so didn't exist and that it should. So I ran "sudo apt-get install libgl1-mesa-swrast" and added a symbolic link to /usr/lib/fglrx/dri/.

    But then, running glxinfo returned "Error: couldn't find RGB GLX visual or fbconfig", which is how I came across your post. At this point, I was willing to try just about anything, so I followed your tip and deleted usr/lib/libGL.so.1 and /usr/lib/libGL.so.1.2 and reran "sudo ldconfig".

    And lo and behold, it finally worked. So thanks for that. This was an *extremely* frustrating problem to solve and I'm a little giddy that it's finally gone.
    "sudo apt-get install libgl1-mesa-swrast"

    that line worked for me... thanks!

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