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xrandr --setprovideroffloadsink nouveau Intel
DRI_PRIME=1 glxinfo

xrandr --setprovideroffloadsink nouveau Intel
Could not find provider with name Intel


xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x66 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 5 associated providers: 0 name:nouveau



grep -A1 -e EE -e WW -e GLAMOR /var/log/Xorg.0.log
[   556.410] Current Operating System: Linux think-box 3.16.2 #4 SMP PREEMPT Sat Sep 13 16:55:12 IST 2014 x86_64
[   556.410] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.16.2-custom root=/dev/sda1 ro "acpi_osi=!Windows 2012" i915 enable_rc6=7 i915 enable_fbc=1 lvds_downclock=1 semaphores=1 fastboot=1 fan_control=1 quiet
--
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[   556.421] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Sep 20 20:55:03 2014
--
[   556.423] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[   556.423]    Entry deleted from font path.
--
[   557.185] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
[   557.187] (II) NOUVEAU(0): NVEnterVT is called.

 dpkg -l | grep mesa
ii  glx-alternative-mesa                     0.4.1                                 amd64        allows the selection of MESA as GLX provider
ii  libegl1-mesa:amd64                       10.2.6-1                              amd64        free implementation of the EGL API -- runtime
ii  libegl1-mesa-drivers:amd64               10.2.6-1                              amd64        free implementation of the EGL API -- hardware drivers
ii  libgl1-mesa-dri:amd64                    10.2.6-1                              amd64        free implementation of the OpenGL API -- DRI modules
ii  libgl1-mesa-glx:amd64                    10.2.6-1                              amd64        free implementation of the OpenGL API -- GLX runtime
ii  libglapi-mesa:amd64                      10.2.6-1                              amd64        free implementation of the GL API -- shared library
ii  libglu1-mesa:amd64                       9.0.0-2                               amd64        Mesa OpenGL utility library (GLU)
ii  libopenvg1-mesa:amd64                    10.2.6-1                              amd64        free implementation of the OpenVG API -- runtime
ii  libwayland-egl1-mesa:amd64               10.2.6-1                              amd64        implementation of the Wayland EGL platform -- runtime
ii  mesa-utils                               8.2.0-1                               amd64        Miscellaneous Mesa GL utilities
ii  mesa-vdpau-drivers:amd64                 10.2.6-1                              amd64        Mesa VDPAU video acceleration drivers

    37.936] (II) The server relies on udev to provide the list of input devices.
        If no devices become available, reconfigure udev or disable AutoAddDevices.
[    37.936] (II) Loader magic: 0x7f7dd6dc6d80
[    37.936] (II) Module ABI versions:
[    37.936]    X.Org ANSI C Emulation: 0.4
[    37.936]    X.Org Video Driver: 18.0
[    37.936]    X.Org XInput driver : 21.0
[    37.936]    X.Org Server Extension : 8.0
[    37.936] (II) xfree86: Adding drm device (/dev/dri/card1)
[    37.936] (II) xfree86: Adding drm device (/dev/dri/card0)
[    37.938] (--) PCI:*(0:0:2:0) 8086:0166:17aa:21f4 rev 9, Mem @ 0xf1400000/4194304, 0xe0000000/268435456, I/O @ 0x00005000/64
[    37.938] (--) PCI: (0:1:0:0) 10de:0def:17aa:21f4 rev 161, Mem @ 0xf0000000/16777216, 0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00004000/128, BIOS @ 0x????????/524288
[    37.945] (II) LoadModule: "glx"
[    37.960] (II) Loading /usr/lib/xorg/modules/linux/libglx.so
[    38.818] (II) Module glx: vendor="NVIDIA Corporation"
[    38.818]    compiled for 4.0.2, module version = 1.0.0
[    38.818]    Module class: X.Org Server Extension
[    38.819] (II) NVIDIA GLX Module  340.32  Tue Aug  5 20:32:43 PDT 2014
[    38.823] (II) LoadModule: "nouveau"
[    38.913] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[    38.930] (II) Module nouveau: vendor="X.Org Foundation"
[    38.930]    compiled for 1.16.0, module version = 1.0.11
[    38.930]    Module class: X.Org Video Driver
[    38.930]    ABI class: X.Org Video Driver, version 18.0
[    38.930] (II) NOUVEAU driver Date:   Thu Aug 28 03:57:48 2014 +0200
[    38.930] (II) NOUVEAU driver for NVIDIA chipset families :
[    38.930]    RIVA TNT        (NV04)
[    38.930]    RIVA TNT2       (NV05)
[    38.930]    GeForce 256     (NV10)
[    38.930]    GeForce 2       (NV11, NV15)
[    38.930]    GeForce 4MX     (NV17, NV18)
[    38.930]    GeForce 3       (NV20)
[    38.930]    GeForce 4Ti     (NV25, NV28)
[    38.930]    GeForce FX      (NV3x)
[    38.930]    GeForce 6       (NV4x)
[    38.930]    GeForce 7       (G7x)
[    38.930]    GeForce 8       (G8x)
[    38.930]    GeForce GTX 200 (NVA0)
[    38.930]    GeForce GTX 400 (NVC0)
[    38.930] (++) using VT number 1

[    38.930] (--) controlling tty is VT number 1, auto-enabling KeepTty
[    38.930] (II) [drm] nouveau interface version: 1.1.1
[    38.930] (EE) No devices detected.
[    38.930] (EE) 
Fatal server error:
[    38.930] (EE) no screens found(EE) 
[    38.930] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[    38.930] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    38.930] (EE)

glxgears 
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
301 frames in 5.0 seconds = 60.074 FPS
301 frames in 5.0 seconds = 60.007 FPS
301 frames in 5.0 seconds = 60.007 FPS
300 frames in 5.0 seconds = 59.807 FPS

cat /etc/X11/xorg.conf.d/20-nouveau.conf 
#Section "Device"
#    Identifier "Nvidia card"
#    Driver "nouveau"
#EndSection
Section "Device"
    Identifier "nouveau"
    Driver "nouveau"
#    BusID "PCI:01:00.0"
EndSection

$googleearth 
/usr/lib/googleearth/googleearth-bin: 1: /usr/lib/googleearth/googleearth-bin: Syntax error: "(" unexpected