Given the following /var/log/Xorg.0.log, which graphics driver is the X server currently using? This log is too confusing for me to parse (I had to snip hopefully irrelevant parts to be able to post the question):
[ 42.851]
X.Org X Server 1.11.3
Release Date: 2011-12-16
[ 42.851] X Protocol Version 11, Revision 0
[ 42.851] Build Operating System: Linux 2.6.42-37-generic i686 Ubuntu
[ 42.851] Current Operating System: Linux malou-laptop 3.2.0-57-generic #87-Ubuntu SMP Tue Nov 12 21:38:12 UTC 2013 i686
[ 42.851] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-57-generic root=UUID=4a8098b3-159d-490a-8216-fe5649d4c129 ro quiet splash
[ 42.851] Build Date: 16 October 2013 04:45:22PM
[ 42.851] xorg-server 2:1.11.4-0ubuntu10.14 (For technical support please see http://www.ubuntu.com/support)
[ 42.851] Current version of pixman: 0.24.4
[ 42.851] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 42.851] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 42.851] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jan 10 10:00:25 2014
[ 42.947] (==) Using config file: "/etc/X11/xorg.conf"
[ 42.947] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 42.953] (==) No Layout section. Using the first Screen section.
[ 42.953] (==) No screen section available. Using defaults.
[ 42.953] (**) |-->Screen "Default Screen Section" (0)
[ 42.953] (**) | |-->Monitor ""
[ 42.953] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 42.953] (**) | |-->Device "Default Device"
[ 42.953] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 42.953] (==) Automatically adding devices
[ 42.953] (==) Automatically enabling devices
[ 42.953] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 42.953] Entry deleted from font path.
[ 42.953] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,
built-ins
[ 42.953] (==) ModulePath set to "/usr/lib/i386-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[ 42.953] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 42.953] (II) Loader magic: 0x7b35a0
[ 42.953] (II) Module ABI versions:
[ 42.953] X.Org ANSI C Emulation: 0.4
[ 42.953] X.Org Video Driver: 11.0
[ 42.953] X.Org XInput driver : 16.0
[ 42.953] X.Org Server Extension : 6.0
[ 42.955] (--) PCI:*(0:1:0:0) 10de:0429:17aa:20d8 rev 161, Mem @ 0xd2000000/16777216, 0xe0000000/268435456, 0xd0000000/33554432, I/O @ 0x00002000/128
[ 42.955] (II) Open ACPI successful (/var/run/acpid.socket)
[ 42.955] (WW) "glamoregl" will not be loaded unless you've specified it to be loaded elsewhere.
[ 42.955] (II) "extmod" will be loaded by default.
[ 42.955] (II) "dbe" will be loaded by default.
[ 42.955] (II) "glx" will be loaded by default.
[ 42.955] (II) "record" will be loaded by default.
[ 42.955] (II) "dri" will be loaded by default.
[ 42.955] (II) "dri2" will be loaded by default.
[ 42.955] (II) LoadModule: "extmod"
[ 42.982] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
[ 42.982] (II) Module extmod: vendor="X.Org Foundation"
[ 42.982] compiled for 1.11.3, module version = 1.0.0
[ 42.982] Module class: X.Org Server Extension
[ 42.982] ABI class: X.Org Server Extension, version 6.0
[ 42.982] (II) Loading extension MIT-SCREEN-SAVER
[ 42.982] (II) Loading extension XFree86-VidModeExtension
[ 42.982] (II) Loading extension XFree86-DGA
[ 42.982] (II) Loading extension DPMS
[ 42.982] (II) Loading extension XVideo
[ 42.982] (II) Loading extension XVideo-MotionCompensation
[ 42.982] (II) Loading extension X-Resource
[ 42.982] (II) LoadModule: "dbe"
[ 42.982] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
[ 42.983] (II) Module dbe: vendor="X.Org Foundation"
[ 42.983] compiled for 1.11.3, module version = 1.0.0
[ 42.983] Module class: X.Org Server Extension
[ 42.983] ABI class: X.Org Server Extension, version 6.0
[ 42.983] (II) Loading extension DOUBLE-BUFFER
[ 42.983] (II) LoadModule: "glx"
[ 42.983] (II) Loading /usr/lib/i386-linux-gnu/xorg/extra-modules/libglx.so
[ 50.773] (II) Module glx: vendor="NVIDIA Corporation"
[ 50.773] compiled for 4.0.2, module version = 1.0.0
[ 50.773] Module class: X.Org Server Extension
[ 50.773] (II) NVIDIA GLX Module 331.20 Wed Oct 30 17:53:40 PDT 2013
[ 50.773] (II) Loading extension GLX
[ 50.773] (II) LoadModule: "record"
[ 50.774] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so
[ 51.245] (II) Module record: vendor="X.Org Foundation"
[ 51.245] compiled for 1.11.3, module version = 1.13.0
[ 51.245] Module class: X.Org Server Extension
[ 51.245] ABI class: X.Org Server Extension, version 6.0
[ 51.245] (II) Loading extension RECORD
[ 51.245] (II) LoadModule: "dri"
[ 51.246] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so
[ 51.246] (II) Module dri: vendor="X.Org Foundation"
[ 51.246] compiled for 1.11.3, module version = 1.0.0
[ 51.246] ABI class: X.Org Server Extension, version 6.0
[ 51.246] (II) Loading extension XFree86-DRI
[ 51.246] (II) LoadModule: "dri2"
[ 51.246] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
[ 51.246] (II) Module dri2: vendor="X.Org Foundation"
[ 51.246] compiled for 1.11.3, module version = 1.2.0
[ 51.246] ABI class: X.Org Server Extension, version 6.0
[ 51.246] (II) Loading extension DRI2
[ 51.246] (==) Matched nvidia as autoconfigured driver 0
[ 51.246] (==) Matched nouveau as autoconfigured driver 1
[ 51.246] (==) Matched nv as autoconfigured driver 2
[ 51.246] (==) Matched vesa as autoconfigured driver 3
[ 51.246] (==) Matched fbdev as autoconfigured driver 4
[ 51.246] (==) Assigned the driver to the xf86ConfigLayout
[ 51.246] (II) LoadModule: "nvidia"
[ 51.246] (II) Loading /usr/lib/i386-linux-gnu/xorg/extra-modules/nvidia_drv.so
[ 51.669] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 51.669] compiled for 4.0.2, module version = 1.0.0
[ 51.669] Module class: X.Org Video Driver
[ 51.687] (II) LoadModule: "nouveau"
[ 51.688] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[ 51.688] (II) Module nouveau: vendor="X.Org Foundation"
[ 51.688] compiled for 1.11.3, module version = 0.0.16
[ 51.688] Module class: X.Org Video Driver
[ 51.688] ABI class: X.Org Video Driver, version 11.0
[ 51.688] (II) LoadModule: "nv"
[ 51.714] (WW) Warning, couldn't open module nv
[ 51.714] (II) UnloadModule: "nv"
[ 51.714] (II) Unloading nv
[ 51.714] (EE) Failed to load module "nv" (module does not exist, 0)
[ 51.714] (II) LoadModule: "vesa"
[ 51.714] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 51.715] (II) Module vesa: vendor="X.Org Foundation"
[ 51.715] compiled for 1.11.3, module version = 2.3.0
[ 51.715] Module class: X.Org Video Driver
[ 51.715] ABI class: X.Org Video Driver, version 11.0
[ 51.715] (II) LoadModule: "fbdev"
[ 51.715] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 51.715] (II) Module fbdev: vendor="X.Org Foundation"
[ 51.715] compiled for 1.11.3, module version = 0.4.2
[ 51.715] ABI class: X.Org Video Driver, version 11.0
[ 51.715] (==) Matched nvidia as autoconfigured driver 0
[ 51.715] (==) Matched nouveau as autoconfigured driver 1
[ 51.715] (==) Matched nv as autoconfigured driver 2
[ 51.715] (==) Matched vesa as autoconfigured driver 3
[ 51.715] (==) Matched fbdev as autoconfigured driver 4
[ 51.715] (==) Assigned the driver to the xf86ConfigLayout
[ 51.715] (II) LoadModule: "nvidia"
[ 51.715] (II) Loading /usr/lib/i386-linux-gnu/xorg/extra-modules/nvidia_drv.so
[ 51.715] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 51.990] compiled for 4.0.2, module version = 1.0.0
[ 51.990] Module class: X.Org Video Driver
[ 51.990] (II) UnloadModule: "nvidia"
[ 51.990] (II) Unloading nvidia
[ 51.990] (II) Failed to load module "nvidia" (already loaded, 7838747)
[ 51.990] (II) LoadModule: "nouveau"
[ 51.990] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[ 51.990] (II) Module nouveau: vendor="X.Org Foundation"
[ 51.990] compiled for 1.11.3, module version = 0.0.16
[ 51.990] Module class: X.Org Video Driver
[ 51.990] ABI class: X.Org Video Driver, version 11.0
[ 51.991] (II) UnloadModule: "nouveau"
[ 51.991] (II) Unloading nouveau
[ 51.991] (II) Failed to load module "nouveau" (already loaded, 7838747)
[ 51.991] (II) LoadModule: "nv"
[ 51.991] (WW) Warning, couldn't open module nv
[ 51.991] (II) UnloadModule: "nv"
[ 51.991] (II) Unloading nv
[ 51.991] (EE) Failed to load module "nv" (module does not exist, 0)
[ 51.991] (II) LoadModule: "vesa"
[ 51.992] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 51.992] (II) Module vesa: vendor="X.Org Foundation"
[ 51.992] compiled for 1.11.3, module version = 2.3.0
[ 51.992] Module class: X.Org Video Driver
[ 51.992] ABI class: X.Org Video Driver, version 11.0
[ 51.992] (II) UnloadModule: "vesa"
[ 51.992] (II) Unloading vesa
[ 51.992] (II) Failed to load module "vesa" (already loaded, 0)
[ 51.992] (II) LoadModule: "fbdev"
[ 51.992] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 51.992] (II) Module fbdev: vendor="X.Org Foundation"
[ 51.992] compiled for 1.11.3, module version = 0.4.2
[ 51.992] ABI class: X.Org Video Driver, version 11.0
[ 51.992] (II) UnloadModule: "fbdev"
[ 51.992] (II) Unloading fbdev
[ 51.992] (II) Failed to load module "fbdev" (already loaded, 0)
[ 52.100] (II) NVIDIA dlloader X Driver 331.20 Wed Oct 30 17:32:26 PDT 2013
[ 52.100] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 52.123] (II) NOUVEAU driver Date: Wed Nov 30 18:56:54 2011 +0100
[ 52.123] (II) NOUVEAU driver for NVIDIA chipset families :
[ 52.123] RIVA TNT (NV04)
[ 52.123] RIVA TNT2 (NV05)
[ 52.123] GeForce 256 (NV10)
[ 52.123] GeForce 2 (NV11, NV15)
[ 52.123] GeForce 4MX (NV17, NV18)
[ 52.123] GeForce 3 (NV20)
[ 52.123] GeForce 4Ti (NV25, NV28)
[ 52.123] GeForce FX (NV3x)
[ 52.123] GeForce 6 (NV4x)
[ 52.123] GeForce 7 (G7x)
[ 52.123] GeForce 8 (G8x)
[ 52.123] GeForce GTX 200 (NVA0)
[ 52.124] GeForce GTX 400 (NVC0)
[ 52.124] (II) VESA: driver for VESA chipsets: vesa
[ 52.124] (II) FBDEV: driver for framebuffer: fbdev
[ 52.124] (++) using VT number 7
[ 52.132] (II) Loading sub module "fb"
[ 52.132] (II) LoadModule: "fb"
[ 52.133] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 52.133] (II) Module fb: vendor="X.Org Foundation"
[ 52.133] compiled for 1.11.3, module version = 1.0.0
[ 52.133] ABI class: X.Org ANSI C Emulation, version 0.4
[ 52.133] (II) Loading sub module "wfb"
[ 52.133] (II) LoadModule: "wfb"
[ 52.133] (II) Loading /usr/lib/xorg/modules/libwfb.so
[ 52.186] (II) Module wfb: vendor="X.Org Foundation"
[ 52.186] compiled for 1.11.3, module version = 1.0.0
[ 52.186] ABI class: X.Org ANSI C Emulation, version 0.4
[ 52.186] (II) Loading sub module "ramdac"
[ 52.186] (II) LoadModule: "ramdac"
[ 52.186] (II) Module "ramdac" already built-in
[ 52.383] (EE) NVIDIA: Failed to load the NVIDIA kernel module. Please check your
[ 52.383] (EE) NVIDIA: system's kernel log for additional error messages.
[ 52.383] drmOpenDevice: node name is /dev/dri/card0
[ 52.392] [drm] failed to load kernel module "nouveau"
[ 52.392] (EE) [drm] failed to open device
[ 52.392] drmOpenDevice: node name is /dev/dri/card0
[ 52.401] [drm] failed to load kernel module "nouveau"
[ 52.401] (EE) [drm] failed to open device
[ 52.401] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 52.401] (WW) Falling back to old probe method for fbdev
[ 52.401] (II) Loading sub module "fbdevhw"
[ 52.401] (II) LoadModule: "fbdevhw"
[ 52.401] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 52.401] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 52.401] compiled for 1.11.3, module version = 0.0.2
[ 52.402] ABI class: X.Org Video Driver, version 11.0
[ 52.402] (EE) open /dev/fb0: No such file or directory
[ 52.402] (II) Loading sub module "vbe"
[ 52.402] (II) LoadModule: "vbe"
[ 52.402] (II) Loading /usr/lib/xorg/modules/libvbe.so
[ 52.402] (II) Module vbe: vendor="X.Org Foundation"
[ 52.402] compiled for 1.11.3, module version = 1.1.0
[ 52.402] ABI class: X.Org Video Driver, version 11.0
[ 52.402] (II) Loading sub module "int10"
[ 52.402] (II) LoadModule: "int10"
[ 52.402] (II) Loading /usr/lib/xorg/modules/libint10.so
[ 52.402] (II) Module int10: vendor="X.Org Foundation"
[ 52.402] compiled for 1.11.3, module version = 1.0.0
[ 52.402] ABI class: X.Org Video Driver, version 11.0
[ 52.403] (II) VESA(0): initializing int10
[ 52.403] (II) VESA(0): Primary V_BIOS segment is: 0xc000
[ 52.467] (II) VESA(0): VESA BIOS detected
[ 52.467] (II) VESA(0): VESA VBE Version 3.0
[ 52.467] (II) VESA(0): VESA VBE Total Mem: 14336 kB
[ 52.467] (II) VESA(0): VESA VBE OEM: NVIDIA
[ 52.467] (II) VESA(0): VESA VBE OEM Software Rev: 96.134
[ 52.467] (II) VESA(0): VESA VBE OEM Vendor: NVIDIA Corporation
[ 52.467] (II) VESA(0): VESA VBE OEM Product: G86 Board - NV_NB8M
[ 52.467] (II) VESA(0): VESA VBE OEM Product Rev: Chip Rev
[ 52.588] (II) VESA(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 52.588] (==) VESA(0): Depth 24, (--) framebuffer bpp 32
[ 52.588] (==) VESA(0): RGB weight 888
[ 52.588] (==) VESA(0): Default visual is TrueColor
[ 52.588] (==) VESA(0): Using gamma correction (1.0, 1.0, 1.0)
[ 52.588] (II) Loading sub module "ddc"
[ 52.588] (II) LoadModule: "ddc"
[ 52.588] (II) Module "ddc" already built-in
[ 52.655] (II) VESA(0): VESA VBE DDC supported
[ 52.655] (II) VESA(0): VESA VBE DDC Level none
[ 52.655] (II) VESA(0): VESA VBE DDC transfer in appr. 0 sec.
[ 52.925] (II) VESA(0): VESA VBE DDC read failed
[ 53.009] (II) VESA(0): VESA VBE PanelID read successfully
[ 53.009] (II) VESA(0): PanelID returned panel resolution 1680x1050
[ 53.009] (II) VESA(0): Searching for matching VESA mode(s):
[ 53.010] Mode: 100 (640x400)
[ 53.010] ModeAttributes: 0x3bf
[ 53.011] WinAAttributes: 0x7
[ 53.011] WinBAttributes: 0x0
[ 53.011] WinGranularity: 64
[..]
[ 53.078] BnkNumberOfImagePages: 1
[ 53.078] LinNumberOfImagePages: 1
[ 53.078] LinRedMaskSize: 8
[ 53.078] LinRedFieldPosition: 16
[ 53.078] LinGreenMaskSize: 8
[ 53.078] LinGreenFieldPosition: 8
[ 53.078] LinBlueMaskSize: 8
[ 53.078] LinBlueFieldPosition: 0
[ 53.078] LinRsvdMaskSize: 8
[ 53.078] LinRsvdFieldPosition: 24
[ 53.078] MaxPixelClock: 229500000
[ 53.078]
[ 53.078] (II) VESA(0): Total Memory: 224 64KB banks (14336kB)
[ 53.078] (II) VESA(0): : Using hsync range of 29.37-64.67 kHz
[ 53.078] (II) VESA(0): : Using vrefresh range of 56.00-59.88 Hz
[ 53.078] (WW) VESA(0): Unable to estimate virtual size
[ 53.078] (II) VESA(0): Not using built-in mode "1680x1050" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "1280x1024" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "1280x800" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "1024x768" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "800x600" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "640x480" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "640x400" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "320x400" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "320x240" (no mode of this name)
[ 53.078] (II) VESA(0): Not using built-in mode "320x200" (no mode of this name)
[ 53.078] (WW) VESA(0): No valid modes left. Trying less strict filter...
[ 53.078] (II) VESA(0): : Using hsync range of 29.37-64.67 kHz
[ 53.078] (II) VESA(0): : Using vrefresh range of 56.00-59.88 Hz
[ 53.078] (WW) VESA(0): Unable to estimate virtual size
[ 53.078] (II) VESA(0): Not using built-in mode "640x400" (hsync out of range)
[ 53.078] (II) VESA(0): Not using built-in mode "320x400" (hsync out of range)
[ 53.078] (II) VESA(0): Not using built-in mode "320x240" (illegal horizontal timings)
[ 53.078] (II) VESA(0): Not using built-in mode "320x200" (illegal horizontal timings)
[ 53.078] (--) VESA(0): Virtual size is 1680x1050 (pitch 1680)
[ 53.078] (**) VESA(0): *Built-in mode "1680x1050"
[ 53.078] (**) VESA(0): *Built-in mode "1280x1024"
[ 53.079] (**) VESA(0): *Built-in mode "1280x800"
[ 53.079] (**) VESA(0): *Built-in mode "1024x768"
[ 53.079] (**) VESA(0): *Built-in mode "800x600"
[ 53.079] (**) VESA(0): *Built-in mode "640x480"
[ 53.079] (==) VESA(0): DPI set to (96, 96)
[ 53.079] (II) VESA(0): Attempting to use 60Hz refresh for mode "1680x1050" (169)
[ 53.080] (II) VESA(0): Attempting to use 60Hz refresh for mode "1280x1024" (11b)
[ 53.080] (II) VESA(0): Attempting to use 60Hz refresh for mode "1024x768" (118)
[ 53.081] (II) VESA(0): Attempting to use 60Hz refresh for mode "800x600" (115)
[ 53.082] (II) VESA(0): Attempting to use 60Hz refresh for mode "640x480" (112)
[ 53.083] (**) VESA(0): Using "Shadow Framebuffer"
[ 53.083] (II) Loading sub module "shadow"
[ 53.083] (II) LoadModule: "shadow"
[ 53.084] (II) Loading /usr/lib/xorg/modules/libshadow.so
[ 53.084] (II) Module shadow: vendor="X.Org Foundation"
[ 53.084] compiled for 1.11.3, module version = 1.1.0
[ 53.084] ABI class: X.Org ANSI C Emulation, version 0.4
[ 53.084] (II) Loading sub module "fb"
[ 53.084] (II) LoadModule: "fb"
[ 53.084] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 53.084] (II) Module fb: vendor="X.Org Foundation"
[ 53.084] compiled for 1.11.3, module version = 1.0.0
[ 53.084] ABI class: X.Org ANSI C Emulation, version 0.4
[ 53.084] (II) UnloadModule: "fbdev"
[ 53.084] (II) Unloading fbdev
[ 53.084] (II) UnloadModule: "fbdevhw"
[ 53.084] (II) Unloading fbdevhw
[ 53.084] (==) Depth 24 pixmap format is 32 bpp
[ 53.084] (II) Loading sub module "int10"
[ 53.085] (II) LoadModule: "int10"
[ 53.085] (II) Loading /usr/lib/xorg/modules/libint10.so
[ 53.085] (II) Module int10: vendor="X.Org Foundation"
[ 53.085] compiled for 1.11.3, module version = 1.0.0
[ 53.085] ABI class: X.Org Video Driver, version 11.0
[ 53.085] (II) VESA(0): initializing int10
[ 53.085] (II) VESA(0): Primary V_BIOS segment is: 0xc000
[ 53.147] (II) VESA(0): VESA BIOS detected
[ 53.147] (II) VESA(0): VESA VBE Version 3.0
[ 53.147] (II) VESA(0): VESA VBE Total Mem: 14336 kB
[ 53.147] (II) VESA(0): VESA VBE OEM: NVIDIA
[ 53.147] (II) VESA(0): VESA VBE OEM Software Rev: 96.134
[ 53.147] (II) VESA(0): VESA VBE OEM Vendor: NVIDIA Corporation
[ 53.147] (II) VESA(0): VESA VBE OEM Product: G86 Board - NV_NB8M
[ 53.147] (II) VESA(0): VESA VBE OEM Product Rev: Chip Rev
[ 53.150] (II) VESA(0): virtual address = 0xb67be000,
physical address = 0xd1000000, size = 14680064
[ 53.172] (II) VESA(0): Setting up VESA Mode 0x169 (1680x1050)
[ 53.382] (==) VESA(0): Default visual is TrueColor
[ 53.383] (==) VESA(0): Backing store disabled
[ 53.383] (==) VESA(0): DPMS enabled
[ 53.383] (WW) VESA(0): Option "NoLogo" is not used
[ 53.383] (==) RandR enabled
[ 53.383] (II) Initializing built-in extension Generic Event Extension
[ 53.383] (II) Initializing built-in extension SHAPE
[ 53.383] (II) Initializing built-in extension MIT-SHM
[ 53.383] (II) Initializing built-in extension XInputExtension
[ 53.383] (II) Initializing built-in extension XTEST
[ 53.383] (II) Initializing built-in extension BIG-REQUESTS
[ 53.383] (II) Initializing built-in extension SYNC
[ 53.383] (II) Initializing built-in extension XKEYBOARD
[ 53.383] (II) Initializing built-in extension XC-MISC
[ 53.383] (II) Initializing built-in extension SECURITY
[ 53.383] (II) Initializing built-in extension XINERAMA
[ 53.383] (II) Initializing built-in extension XFIXES
[ 53.383] (II) Initializing built-in extension RENDER
[ 53.383] (II) Initializing built-in extension RANDR
[ 53.383] (II) Initializing built-in extension COMPOSITE
[ 53.383] (II) Initializing built-in extension DAMAGE
[ 53.407] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
[ 53.445] (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
[ 53.449] (II) config/udev: Adding input device Power Button (/dev/input/event2)
[ 53.449] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 53.449] (II) LoadModule: "evdev"
[ 53.450] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 53.450] (II) Module evdev: vendor="X.Org Foundation"
[ 53.450] compiled for 1.11.3, module version = 2.7.0
[ 53.450] Module class: X.Org XInput Driver
[ 53.450] ABI class: X.Org XInput driver, version 16.0
[ 53.450] (II) Using input driver 'evdev' for 'Power Button'
[ 53.450] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 53.450] (**) Power Button: always reports core events
[ 53.450] (**) evdev: Power Button: Device: "/dev/input/event2"
[ 53.450] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 53.450] (--) evdev: Power Button: Found keys
[ 53.450] (II) evdev: Power Button: Configuring as keyboard
[ 53.450] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2/event2"
[ 53.450] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 53.450] (**) Option "xkb_rules" "evdev"
[ 53.450] (**) Option "xkb_model" "pc105"
[ 53.450] (**) Option "xkb_layout" "us"
[ 53.451] (II) config/udev: Adding input device Video Bus (/dev/input/event4)
[ 53.451] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 53.451] (II) Using input driver 'evdev' for 'Video Bus'
[ 53.451] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 53.451] (**) Video Bus: always reports core events
[ 53.451] (**) evdev: Video Bus: Device: "/dev/input/event4"
[ 53.451] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 53.451] (--) evdev: Video Bus: Found keys
[ 53.451] (II) evdev: Video Bus: Configuring as keyboard
[ 53.451] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:04/LNXVIDEO:01/input/input4/event4"
[ 53.451] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 53.451] (**) Option "xkb_rules" "evdev"
[ 53.451] (**) Option "xkb_model" "pc105"
[ 53.451] (**) Option "xkb_layout" "us"
[ 53.452] (II) config/udev: Adding input device Lid Switch (/dev/input/event0)
[ 53.452] (II) No input driver specified, ignoring this device.
[ 53.452] (II) This device may have been added with another device file.
[ 53.452] (II) config/udev: Adding input device Sleep Button (/dev/input/event1)
[ 53.452] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[ 53.452] (II) Using input driver 'evdev' for 'Sleep Button'
[ 53.452] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 53.452] (**) Sleep Button: always reports core events
[ 53.452] (**) evdev: Sleep Button: Device: "/dev/input/event1"
[ 53.452] (--) evdev: Sleep Button: Vendor 0 Product 0x3
[ 53.452] (--) evdev: Sleep Button: Found keys
[ 53.452] (II) evdev: Sleep Button: Configuring as keyboard
[ 53.453] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input1/event1"
[ 53.453] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 8)
[ 53.453] (**) Option "xkb_rules" "evdev"
[ 53.453] (**) Option "xkb_model" "pc105"
[ 53.453] (**) Option "xkb_layout" "us"
[..]
[ 53.453] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[..]
[ 53.453] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input3/event3"
[ 53.453] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 9)
[ 53.454] (**) Option "xkb_rules" "evdev"
[ 53.454] (**) Option "xkb_model" "pc105"
[ 53.454] (**) Option "xkb_layout" "us"
[ 53.454] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event5)
[ 53.454] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[ 53.454] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[ 53.454] (II) LoadModule: "synaptics"
[ 53.455] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 53.455] (II) Module synaptics: vendor="X.Org Foundation"
[ 53.455] compiled for 1.11.3, module version = 1.6.2
[ 53.455] Module class: X.Org XInput Driver
[ 53.455] ABI class: X.Org XInput driver, version 16.0
[ 53.455] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[ 53.455] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 53.455] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 53.455] (**) Option "Device" "/dev/input/event5"
[..]
[ 53.469] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/serio2/input/input7/event7"
[ 53.469] (II) XINPUT: Adding extended input device "TPPS/2 IBM TrackPoint" (type: MOUSE, id 11)
[..]
[ 53.470] (II) No input driver specified, ignoring this device.
[ 53.470] (II) This device may have been added with another device file.
[ 53.472] (II) config/udev: Adding input device ThinkPad Extra Buttons (/dev/input/event6)
[ 53.472] (**) ThinkPad Extra Buttons: Applying InputClass "evdev keyboard catchall"
[ 53.472] (II) Using input driver 'evdev' for 'ThinkPad Extra Buttons'
[ 53.472] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 53.472] (**) ThinkPad Extra Buttons: always reports core events
[ 53.472] (**) evdev: ThinkPad Extra Buttons: Device: "/dev/input/event6"
[ 53.472] (--) evdev: ThinkPad Extra Buttons: Vendor 0x17aa Product 0x5054
[ 53.472] (--) evdev: ThinkPad Extra Buttons: Found keys
[ 53.472] (II) evdev: ThinkPad Extra Buttons: Configuring as keyboard
[ 53.472] (**) Option "config_info" "udev:/sys/devices/platform/thinkpad_acpi/input/input6/event6"
[ 53.472] (II) XINPUT: Adding extended input device "ThinkPad Extra Buttons" (type: KEYBOARD, id 12)
[ 53.472] (**) Option "xkb_rules" "evdev"
[ 53.472] (**) Option "xkb_model" "pc105"
[ 53.472] (**) Option "xkb_layout" "us"
Background: This question is on the back of Nvidia X Server flickers, hangs and segfaults on start-up. I am able to start X only if I install the proprietary Nvidia graphics for my graphics card (say, nvidia-304) in one kernel (3.2.0-23-generic), then boot in a different kernel (3.2.0-57-generic). It clearly uses some fallback driver, but I can't understand if it's nouveau or something else.
EDIT1:
As suggested:
liv@malou-laptop:~$ lspci -v
[..]
01:00.0 VGA compatible controller: NVIDIA Corporation G86M [Quadro NVS 140M] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Lenovo ThinkPad T61
[..]
Kernel modules: nouveau, nvidiafb
[..]
But strangely, these modules don't seem to be in use:
root@malou-laptop:/home/liv# lsmod | grep -i nouveau
root@malou-laptop:/home/liv# lsmod | grep -i nvidia
Although they're clearly available:
liv@malou-laptop:~$ modprobe -l | grep nouveau
kernel/drivers/gpu/drm/nouveau/nouveau.ko
liv@malou-laptop:~$ modprobe -l | grep nvidia
kernel/drivers/video/nvidia/nvidiafb.ko
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