Переустановка драйверов X11 Ubuntu 14.04

После недавнего обновления с 12.04 до 14.04 xserver больше не запускается на моей рабочей станции. При беге

startx 

возникает следующая ошибка:

(EE) module ABI major version (6) doesn't match the server's version (8) xinit: connection to X server lost waiting for X server to shut down (EE) Server terminated successfully (0). Closing log file. 

Я подозреваю, что драйверы X11 не были восстановлены. Однако я в растерянности, так как не знаком с этими шагами. Я проверил логи xorg; их содержание:

Xorg.0.log

[ 8.467]  X.Org X Server 1.15.1 Release Date: 2014-04-13 [ 8.467] X Protocol Version 11, Revision 0 [ 8.467] Build Operating System: Linux 3.2.0-37-generic x86_64 Ubuntu [ 8.467] Current Operating System: Linux senectus 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 [ 8.467] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-34-generic root=UUID=f44b71b3-2138-4161-9514-4f80bfc53269 ro quiet splash vt.handoff=7 [ 8.467] Build Date: 16 April 2014 01:36:29PM [ 8.467] xorg-server 2:1.15.1-0ubuntu2 (For technical support please see http://www.ubuntu.com/support)  [ 8.467] Current version of pixman: 0.30.2 [ 8.467] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 8.467] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 8.467] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Sep 2 19:13:36 2014 [ 8.469] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 8.470] (==) No Layout section. Using the first Screen section. [ 8.470] (==) No screen section available. Using defaults. [ 8.470] (**) |-->Screen "Default Screen Section" (0) [ 8.470] (**) | |-->Monitor "<default monitor>" [ 8.470] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. [ 8.470] (==) Automatically adding devices [ 8.470] (==) Automatically enabling devices [ 8.470] (==) Automatically adding GPU devices [ 8.470] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [ 8.470] Entry deleted from font path. [ 8.470] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist. [ 8.470] Entry deleted from font path. [ 8.470] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist. [ 8.470] Entry deleted from font path. [ 8.470] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist. [ 8.470] Entry deleted from font path. [ 8.470] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist. [ 8.470] Entry deleted from font path. [ 8.470] (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/Type1, built-ins [ 8.470] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules" [ 8.470] (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. [ 8.470] (II) Loader magic: 0x7fc4c1402d60 [ 8.470] (II) Module ABI versions: [ 8.470] X.Org ANSI C Emulation: 0.4 [ 8.470] X.Org Video Driver: 15.0 [ 8.470] X.Org XInput driver : 20.0 [ 8.470] X.Org Server Extension : 8.0 [ 8.471] (--) PCI:*(0:1:0:0) 10de:1213:1043:2119 rev 161, Mem @ 0xf6000000/16777216, 0xf0000000/67108864, 0xf4000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288 [ 8.472] Initializing built-in extension Generic Event Extension [ 8.472] Initializing built-in extension SHAPE [ 8.472] Initializing built-in extension MIT-SHM [ 8.472] Initializing built-in extension XInputExtension [ 8.472] Initializing built-in extension XTEST [ 8.472] Initializing built-in extension BIG-REQUESTS [ 8.472] Initializing built-in extension SYNC [ 8.472] Initializing built-in extension XKEYBOARD [ 8.472] Initializing built-in extension XC-MISC [ 8.472] Initializing built-in extension SECURITY [ 8.472] Initializing built-in extension XINERAMA [ 8.472] Initializing built-in extension XFIXES [ 8.472] Initializing built-in extension RENDER [ 8.472] Initializing built-in extension RANDR [ 8.472] Initializing built-in extension COMPOSITE [ 8.472] Initializing built-in extension DAMAGE [ 8.472] Initializing built-in extension MIT-SCREEN-SAVER [ 8.472] Initializing built-in extension DOUBLE-BUFFER [ 8.472] Initializing built-in extension RECORD [ 8.472] Initializing built-in extension DPMS [ 8.472] Initializing built-in extension Present [ 8.472] Initializing built-in extension DRI3 [ 8.472] Initializing built-in extension X-Resource [ 8.472] Initializing built-in extension XVideo [ 8.472] Initializing built-in extension XVideo-MotionCompensation [ 8.472] Initializing built-in extension SELinux [ 8.472] Initializing built-in extension XFree86-VidModeExtension [ 8.472] Initializing built-in extension XFree86-DGA [ 8.472] Initializing built-in extension XFree86-DRI [ 8.472] Initializing built-in extension DRI2 [ 8.472] (II) LoadModule: "glx" [ 8.487] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so [ 8.496] (II) Module glx: vendor="X.Org Foundation" [ 8.496] compiled for 1.11.3, module version = 1.0.0 [ 8.496] ABI class: X.Org Server Extension, version 6.0 [ 8.496] (EE) module ABI major version (6) doesn't match the server's version (8) [ 8.496] (II) UnloadModule: "glx" [ 8.496] (II) Unloading glx [ 8.496] (EE) Failed to load module "glx" (module requirement mismatch, 0) [ 8.496] (==) Matched nvidia as autoconfigured driver 0 [ 8.496] (==) Matched nouveau as autoconfigured driver 1 [ 8.496] (==) Matched modesetting as autoconfigured driver 2 [ 8.496] (==) Matched fbdev as autoconfigured driver 3 [ 8.496] (==) Matched vesa as autoconfigured driver 4 [ 8.496] (==) Assigned the driver to the xf86ConfigLayout [ 8.496] (II) LoadModule: "nvidia" [ 8.497] (WW) Warning, couldn't open module nvidia [ 8.497] (II) UnloadModule: "nvidia" [ 8.497] (II) Unloading nvidia [ 8.497] (EE) Failed to load module "nvidia" (module does not exist, 0) [ 8.497] (II) LoadModule: "nouveau" [ 8.497] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so [ 8.501] (II) Module nouveau: vendor="X.Org Foundation" [ 8.501] compiled for 1.15.0, module version = 1.0.10 [ 8.501] Module class: X.Org Video Driver [ 8.501] ABI class: X.Org Video Driver, version 15.0 [ 8.501] (II) LoadModule: "modesetting" [ 8.501] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so [ 8.501] (II) Module modesetting: vendor="X.Org Foundation" [ 8.501] compiled for 1.15.0, module version = 0.8.1 [ 8.501] Module class: X.Org Video Driver [ 8.501] ABI class: X.Org Video Driver, version 15.0 [ 8.501] (II) LoadModule: "fbdev" [ 8.502] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so [ 8.502] (II) Module fbdev: vendor="X.Org Foundation" [ 8.502] compiled for 1.15.0, module version = 0.4.4 [ 8.502] Module class: X.Org Video Driver [ 8.502] ABI class: X.Org Video Driver, version 15.0 [ 8.502] (II) LoadModule: "vesa" [ 8.502] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so [ 8.502] (II) Module vesa: vendor="X.Org Foundation" [ 8.502] compiled for 1.15.0, module version = 2.3.3 [ 8.502] Module class: X.Org Video Driver [ 8.502] ABI class: X.Org Video Driver, version 15.0 [ 8.502] (==) Matched nvidia as autoconfigured driver 0 [ 8.502] (==) Matched nouveau as autoconfigured driver 1 [ 8.502] (==) Matched modesetting as autoconfigured driver 2 [ 8.502] (==) Matched fbdev as autoconfigured driver 3 [ 8.502] (==) Matched vesa as autoconfigured driver 4 [ 8.502] (==) Assigned the driver to the xf86ConfigLayout [ 8.502] (II) LoadModule: "nvidia" [ 8.502] (WW) Warning, couldn't open module nvidia [ 8.502] (II) UnloadModule: "nvidia" [ 8.502] (II) Unloading nvidia [ 8.502] (EE) Failed to load module "nvidia" (module does not exist, 0) [ 8.502] (II) LoadModule: "nouveau" [ 8.502] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so [ 8.502] (II) Module nouveau: vendor="X.Org Foundation" [ 8.502] compiled for 1.15.0, module version = 1.0.10 [ 8.502] Module class: X.Org Video Driver [ 8.502] ABI class: X.Org Video Driver, version 15.0 [ 8.502] (II) UnloadModule: "nouveau" [ 8.502] (II) Unloading nouveau [ 8.502] (II) Failed to load module "nouveau" (already loaded, 0) [ 8.502] (II) LoadModule: "modesetting" [ 8.503] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so [ 8.503] (II) Module modesetting: vendor="X.Org Foundation" [ 8.503] compiled for 1.15.0, module version = 0.8.1 [ 8.503] Module class: X.Org Video Driver [ 8.503] ABI class: X.Org Video Driver, version 15.0 [ 8.503] (II) UnloadModule: "modesetting" [ 8.503] (II) Unloading modesetting [ 8.503] (II) Failed to load module "modesetting" (already loaded, 0) [ 8.503] (II) LoadModule: "fbdev" [ 8.503] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so [ 8.503] (II) Module fbdev: vendor="X.Org Foundation" [ 8.503] compiled for 1.15.0, module version = 0.4.4 [ 8.503] Module class: X.Org Video Driver [ 8.503] ABI class: X.Org Video Driver, version 15.0 [ 8.503] (II) UnloadModule: "fbdev" [ 8.503] (II) Unloading fbdev [ 8.503] (II) Failed to load module "fbdev" (already loaded, 0) [ 8.503] (II) LoadModule: "vesa" [ 8.503] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so [ 8.503] (II) Module vesa: vendor="X.Org Foundation" [ 8.503] compiled for 1.15.0, module version = 2.3.3 [ 8.503] Module class: X.Org Video Driver [ 8.503] ABI class: X.Org Video Driver, version 15.0 [ 8.503] (II) UnloadModule: "vesa" [ 8.503] (II) Unloading vesa [ 8.503] (II) Failed to load module "vesa" (already loaded, 0) [ 8.503] (II) NOUVEAU driver Date: Thu Nov 7 14:56:48 2013 +1000 [ 8.503] (II) NOUVEAU driver for NVIDIA chipset families : [ 8.503] RIVA TNT (NV04) [ 8.503] RIVA TNT2 (NV05) [ 8.503] GeForce 256 (NV10) [ 8.503] GeForce 2 (NV11, NV15) [ 8.503] GeForce 4MX (NV17, NV18) [ 8.503] GeForce 3 (NV20) [ 8.503] GeForce 4Ti (NV25, NV28) [ 8.503] GeForce FX (NV3x) [ 8.503] GeForce 6 (NV4x) [ 8.503] GeForce 7 (G7x) [ 8.503] GeForce 8 (G8x) [ 8.503] GeForce GTX 200 (NVA0) [ 8.503] GeForce GTX 400 (NVC0) [ 8.503] (II) modesetting: Driver for Modesetting Kernel Drivers: kms [ 8.503] (II) FBDEV: driver for framebuffer: fbdev [ 8.503] (II) VESA: driver for VESA chipsets: vesa [ 8.503] (++) using VT number 7  [ 8.517] (EE) [drm] KMS not enabled [ 8.517] (EE) [drm] KMS not enabled [ 8.518] (EE) open /dev/dri/card0: No such file or directory [ 8.518] (EE) open /dev/dri/card0: No such file or directory [ 8.518] (WW) Falling back to old probe method for modesetting [ 8.518] (EE) open /dev/dri/card0: No such file or directory [ 8.518] (EE) open /dev/dri/card0: No such file or directory [ 8.518] (II) Loading sub module "fbdevhw" [ 8.518] (II) LoadModule: "fbdevhw" [ 8.518] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so [ 8.518] (II) Module fbdevhw: vendor="X.Org Foundation" [ 8.518] compiled for 1.15.1, module version = 0.0.2 

Переустановка драйверов Nvidia не решает эту проблему. Как я могу восстановить драйверы X11?