我遇到了一个问题14.04，我的机器无法像往常一样从待机状态恢复到显示密码提示，而是在 shell 屏幕上显示一些不包含太多信息的消息。因此，我关闭了机器的电源，在启动时，我没有进入 X11 登录屏幕，而是将我带到 shell 登录。我尝试手动重新启动，sudo service lighdm start但那只会让我看到黑屏，左上角有一个光标闪烁。现在我可以恢复我的 X 吗？我不知道发生了什么，/var/log/Xorg.0.log我看到类似的东西Device(s) dtected, but none match those in the config file- 我该如何调整它以使我的两个屏幕匹配？我/etc/X11/xorg.conf看起来像：
$ cat /etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 331.49 (buildmeister@swio-display-x86-rhel47-10) Wed Feb 12 21:00:07 PST 2014
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
$
我连接了两个显示器，一个是HP 2511x，另一个是acer AL2216W
编辑1
自动xorg.conf创建nvidia-xconfig
$ cat /etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 331.38 (buildmeister@swio-display-x64-rhel04-15) Wed Jan 8 19:53:14 PST 2014
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
/var/log/Xorg.0.log：
$ cat /var/log/Xorg.0.log
[ 2426.198]
X.Org X Server 1.15.1
Release Date: 2014-04-13
[ 2426.198] X Protocol Version 11, Revision 0
[ 2426.198] Build Operating System: Linux 3.2.0-61-generic x86_64 Ubuntu
[ 2426.198] Current Operating System: Linux regDesktopHome 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64
[ 2426.198] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-40-generic root=UUID=b0488ebc-79a6-49dc-b86f-fd3d9b1d746a ro quiet splash nomdmonddf nomdmonisw nomdmonddf nomdmonisw
[ 2426.198] Build Date: 30 July 2014 12:21:54AM
[ 2426.198] xorg-server 2:1.15.1-0ubuntu2.1 (For technical support please see http://www.ubuntu.com/support)
[ 2426.198] Current version of pixman: 0.30.2
[ 2426.198] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 2426.198] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 2426.198] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Dec 6 12:56:33 2014
[ 2426.199] (==) Using config file: "/etc/X11/xorg.conf"
[ 2426.199] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 2426.199] (==) ServerLayout "Layout0"
[ 2426.199] (**) |-->Screen "Screen0" (0)
[ 2426.199] (**) | |-->Monitor "Monitor0"
[ 2426.199] (**) | |-->Device "Device0"
[ 2426.199] (**) |-->Input Device "Keyboard0"
[ 2426.199] (**) |-->Input Device "Mouse0"
[ 2426.199] (==) Automatically adding devices
[ 2426.199] (==) Automatically enabling devices
[ 2426.199] (==) Automatically adding GPU devices
[ 2426.199] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 2426.199] Entry deleted from font path.
[ 2426.199] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[ 2426.199] Entry deleted from font path.
[ 2426.199] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 2426.199] Entry deleted from font path.
[ 2426.199] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[ 2426.199] Entry deleted from font path.
[ 2426.199] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 2426.200] Entry deleted from font path.
[ 2426.200] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 2426.200] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[ 2426.200] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[ 2426.200] (WW) Disabling Keyboard0
[ 2426.200] (WW) Disabling Mouse0
[ 2426.200] (II) Loader magic: 0x7fd6d26ead40
[ 2426.200] (II) Module ABI versions:
[ 2426.200] X.Org ANSI C Emulation: 0.4
[ 2426.200] X.Org Video Driver: 15.0
[ 2426.200] X.Org XInput driver : 20.0
[ 2426.200] X.Org Server Extension : 8.0
[ 2426.200] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 2426.201] (--) PCI:*(0:1:0:0) 10de:1040:1043:83c6 rev 161, Mem @ 0xfa000000/16777216, 0xe8000000/134217728, 0xf0000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288
[ 2426.201] Initializing built-in extension Generic Event Extension
[ 2426.201] Initializing built-in extension SHAPE
[ 2426.201] Initializing built-in extension MIT-SHM
[ 2426.201] Initializing built-in extension XInputExtension
[ 2426.201] Initializing built-in extension XTEST
[ 2426.201] Initializing built-in extension BIG-REQUESTS
[ 2426.201] Initializing built-in extension SYNC
[ 2426.201] Initializing built-in extension XKEYBOARD
[ 2426.201] Initializing built-in extension XC-MISC
[ 2426.201] Initializing built-in extension SECURITY
[ 2426.201] Initializing built-in extension XINERAMA
[ 2426.201] Initializing built-in extension XFIXES
[ 2426.201] Initializing built-in extension RENDER
[ 2426.201] Initializing built-in extension RANDR
[ 2426.201] Initializing built-in extension COMPOSITE
[ 2426.201] Initializing built-in extension DAMAGE
[ 2426.201] Initializing built-in extension MIT-SCREEN-SAVER
[ 2426.201] Initializing built-in extension DOUBLE-BUFFER
[ 2426.201] Initializing built-in extension RECORD
[ 2426.201] Initializing built-in extension DPMS
[ 2426.201] Initializing built-in extension Present
[ 2426.201] Initializing built-in extension DRI3
[ 2426.201] Initializing built-in extension X-Resource
[ 2426.201] Initializing built-in extension XVideo
[ 2426.201] Initializing built-in extension XVideo-MotionCompensation
[ 2426.201] Initializing built-in extension SELinux
[ 2426.201] Initializing built-in extension XFree86-VidModeExtension
[ 2426.201] Initializing built-in extension XFree86-DGA
[ 2426.201] Initializing built-in extension XFree86-DRI
[ 2426.201] Initializing built-in extension DRI2
[ 2426.201] (WW) "glamoregl" will not be loaded unless you've specified it to be loaded elsewhere.
[ 2426.201] (II) "glx" will be loaded by default.
[ 2426.201] (WW) "xmir" is not to be loaded by default. Skipping.
[ 2426.201] (II) LoadModule: "glx"
[ 2426.201] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 2426.213] (II) Module glx: vendor="X.Org Foundation"
[ 2426.213] compiled for 1.15.1, module version = 1.0.0
[ 2426.213] ABI class: X.Org Server Extension, version 8.0
[ 2426.213] (==) AIGLX enabled
[ 2426.213] Loading extension GLX
[ 2426.213] (II) LoadModule: "nvidia"
[ 2426.213] (WW) Warning, couldn't open module nvidia
[ 2426.213] (II) UnloadModule: "nvidia"
[ 2426.213] (II) Unloading nvidia
[ 2426.213] (EE) Failed to load module "nvidia" (module does not exist, 0)
[ 2426.213] (==) Matched nvidia as autoconfigured driver 0
[ 2426.214] (==) Matched nouveau as autoconfigured driver 1
[ 2426.214] (==) Matched nvidia as autoconfigured driver 2
[ 2426.214] (==) Matched nouveau as autoconfigured driver 3
[ 2426.214] (==) Matched modesetting as autoconfigured driver 4
[ 2426.214] (==) Matched fbdev as autoconfigured driver 5
[ 2426.214] (==) Matched vesa as autoconfigured driver 6
[ 2426.214] (==) Assigned the driver to the xf86ConfigLayout
[ 2426.214] (II) LoadModule: "nvidia"
[ 2426.214] (WW) Warning, couldn't open module nvidia
[ 2426.214] (II) UnloadModule: "nvidia"
[ 2426.214] (II) Unloading nvidia
[ 2426.214] (EE) Failed to load module "nvidia" (module does not exist, 0)
[ 2426.214] (II) LoadModule: "nouveau"
[ 2426.214] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[ 2426.215] (II) Module nouveau: vendor="X.Org Foundation"
[ 2426.215] compiled for 1.15.0, module version = 1.0.10
[ 2426.215] Module class: X.Org Video Driver
[ 2426.215] ABI class: X.Org Video Driver, version 15.0
[ 2426.215] (II) LoadModule: "modesetting"
[ 2426.215] (WW) Warning, couldn't open module modesetting
[ 2426.215] (II) UnloadModule: "modesetting"
[ 2426.215] (II) Unloading modesetting
[ 2426.215] (EE) Failed to load module "modesetting" (module does not exist, 0)
[ 2426.215] (II) LoadModule: "fbdev"
[ 2426.215] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 2426.215] (II) Module fbdev: vendor="X.Org Foundation"
[ 2426.215] compiled for 1.15.0, module version = 0.4.4
[ 2426.215] Module class: X.Org Video Driver
[ 2426.215] ABI class: X.Org Video Driver, version 15.0
[ 2426.215] (II) LoadModule: "vesa"
[ 2426.215] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 2426.216] (II) Module vesa: vendor="X.Org Foundation"
[ 2426.216] compiled for 1.15.0, module version = 2.3.3
[ 2426.216] Module class: X.Org Video Driver
[ 2426.216] ABI class: X.Org Video Driver, version 15.0
[ 2426.216] (II) NOUVEAU driver Date: Thu Nov 7 14:56:48 2013 +1000
[ 2426.216] (II) NOUVEAU driver for NVIDIA chipset families :
[ 2426.216] RIVA TNT (NV04)
[ 2426.216] RIVA TNT2 (NV05)
[ 2426.216] GeForce 256 (NV10)
[ 2426.216] GeForce 2 (NV11, NV15)
[ 2426.216] GeForce 4MX (NV17, NV18)
[ 2426.216] GeForce 3 (NV20)
[ 2426.216] GeForce 4Ti (NV25, NV28)
[ 2426.216] GeForce FX (NV3x)
[ 2426.216] GeForce 6 (NV4x)
[ 2426.216] GeForce 7 (G7x)
[ 2426.216] GeForce 8 (G8x)
[ 2426.216] GeForce GTX 200 (NVA0)
[ 2426.216] GeForce GTX 400 (NVC0)
[ 2426.216] (II) FBDEV: driver for framebuffer: fbdev
[ 2426.216] (II) VESA: driver for VESA chipsets: vesa
[ 2426.216] (++) using VT number 7
[ 2426.220] (EE) [drm] KMS not enabled
[ 2426.220] (EE) [drm] KMS not enabled
[ 2426.220] (EE) [drm] KMS not enabled
[ 2426.220] (EE) [drm] KMS not enabled
[ 2426.220] (EE) [drm] KMS not enabled
[ 2426.220] (II) Loading sub module "fbdevhw"
[ 2426.220] (II) LoadModule: "fbdevhw"
[ 2426.220] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 2426.221] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 2426.221] compiled for 1.15.1, module version = 0.0.2
[ 2426.221] ABI class: X.Org Video Driver, version 15.0
[ 2426.221] (EE) open /dev/fb0: No such file or directory
[ 2426.221] (WW) Falling back to old probe method for fbdev
[ 2426.221] (II) Loading sub module "fbdevhw"
[ 2426.221] (II) LoadModule: "fbdevhw"
[ 2426.222] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 2426.222] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 2426.222] compiled for 1.15.1, module version = 0.0.2
[ 2426.222] ABI class: X.Org Video Driver, version 15.0
[ 2426.222] (EE) open /dev/fb0: No such file or directory
[ 2426.222] vesa: Ignoring device with a bound kernel driver
[ 2426.222] (WW) Falling back to old probe method for vesa
[ 2426.222] (EE) Screen 0 deleted because of no matching config section.
[ 2426.222] (II) UnloadModule: "fbdev"
[ 2426.222] (II) UnloadSubModule: "fbdevhw"
[ 2426.222] (EE) Screen 0 deleted because of no matching config section.
[ 2426.222] (II) UnloadModule: "vesa"
[ 2426.222] (EE) Device(s) detected, but none match those in the config file.
[ 2426.222] (EE)
Fatal server error:
[ 2426.222] (EE) no screens found(EE)
[ 2426.222] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 2426.222] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 2426.222] (EE)
[ 2426.223] (EE) Server terminated with error (1). Closing log file.
$
编辑2
$ sudo apt-get install nvidia-331
[sudo] password for ron:
Reading package lists... Done
Building dependency tree
Reading state information... Done
nvidia-331 is already the newest version.
所以我做sudo apt-get remove nvidia-331了sudo apt-get install nvidia-331
答案1
由于我们通过评论指出 NVIDIA 驱动程序未安装，请尝试按照链接的文档部分重新安装 nvidia 驱动程序不使用 X/从控制台进行安装
https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia
sudo apt-get install --reinstall nvidia-331成功了。（查看编辑 2）