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Thread: dual gpu not working properly on thinkpad t510

  1. #1
    Join Date
    May 2011
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    28

    dual gpu not working properly on thinkpad t510

    Hey, I am proud owner of a thinkpad t510
    it has a dual gpu setup and i read a lot of threads about problems caused by intel optimus technology and X.

    Code:
    :~$ lscpi -v
    00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
        Subsystem: Lenovo Device 21d9
        Flags: bus master, fast devsel, latency 0, IRQ 44
        Memory at f8800000 (64-bit, non-prefetchable) [size=4M]
        Memory at f0000000 (64-bit, prefetchable) [size=128M]
        I/O ports at 1800 [size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915
    
    01:00.0 VGA compatible controller: nVidia Corporation GT218 [NVS 3100M] (rev a2) (prog-if 00 [VGA controller])
        Subsystem: Lenovo Device 21d8
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at cc000000 (32-bit, non-prefetchable) [size=16M]
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at ce000000 (64-bit, prefetchable) [size=32M]
        I/O ports at 2000 [size=128]
        [virtual] Expansion ROM at cd000000 [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: nvidia
        Kernel modules: nvidia-current, nouveau, nvidiafb
    as you can see i have the proprietary driver installed (and i want to use this one, expecially for openGL applications and programming.

    yeah well but:
    Code:
    :~$ glxgears
    Xlib:  extension "GLX" missing on display ":0.0".
    Error: couldn't get an RGB, Double-buffered visual
    
    :~$ glxinfo
    name of display: :0.0
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Error: couldn't find RGB GLX visual or fbconfig
    
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    Xlib:  extension "GLX" missing on display ":0.0".
    nvidia-settings told me to run nvidia-xconfig which trashed that users desktop...

    what can i do? any ideas?

  2. #2
    Join Date
    May 2011
    Beans
    28

    Re: dual gpu not working properly on thinkpad t510

    is there maybe a way to reconfigure xorg.conf by hand?
    or some other file, because xorg.conf seems to be some kind of deprecated since an upgrade of X some years ago...
    or any log that would help on this matter?

  3. #3
    Join Date
    Jun 2005
    Location
    Toronto, Canada
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    Distro
    Xubuntu Development Release

    Re: dual gpu not working properly on thinkpad t510

    Have you come across these posts/links yet? Perhaps they might be of assistance?

    http://ubuntuforums.org/showthread.php?t=1598531(post #6 looks promising)

    http://ubuntuforums.org/showthread.php?t=1681523

    http://www.thinkwiki.org/wiki/Category:T510

  4. #4
    Join Date
    May 2011
    Beans
    28

    Re: dual gpu not working properly on thinkpad t510

    ok, thats pretty much what i read before... (before i installed xubuntu i tried to install gentoo on this laptop but encountered pretty much the same problem, but with ubuntus bigger community i was hoping that there was a solution for this problem)

    is there a way to tell grub which driver to use X with maybe?
    it wouldn't be as good as switching graphics on the fly but atleast i could use the nvidia chip when at home or the intel chip when on battery.

  5. #5
    Join Date
    Jun 2005
    Location
    Toronto, Canada
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    Xubuntu Development Release

    Re: dual gpu not working properly on thinkpad t510

    In those posts it states that the switchable graphics can be turned off in the bios:

    From: http://www.thinkwiki.org/wiki/Category:T510 - "If using the proprietary Nvidia driver (NVIDIA Driver Version 260.19.06) one has to set "Discrete" in BIOS. Linux seems to have some problems with Switchable Graphics (Optimus)."
    From: http://ubuntuforums.org/showpost.php...63&postcount=6 - "you can turn off the switchable graphics in the bios"
    Have you tried turning off the switchable graphics?

  6. #6
    Join Date
    May 2011
    Beans
    28

    Re: dual gpu not working properly on thinkpad t510

    nope, not yet... but i dont get the point, i mean i don't have to switch something off i cannot use anyway
    i think i miss something there...

    will try it tomorrow anyway, don't wanna wreck my computer before going to bed, wont let me sleep.
    thanks for your help

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