我在4月18日星期一安装了Ubuntu 16.04 beta 2。当我尝试安装nvidia-current、nvidia-361或者jockey安装的版本时，要么lightdm完全无法启动，要么我无法通过登录窗口。当我登录后，lightdm.log报告我成功登录，并显示我设置的音量，然后又返回到登录界面。
我的笔记本电脑配备了混合nVidia/Intel图形和Optimus技术（我并不需要GPU切换，但我希望nVidia能正常运行），具体的nVidia型号是GT630M。
这是Xorg.0.log文件：
这是当前正在使用的xorg.conf.XXXXXXXX文件：
现在，我只能使用nouveau/intel，有时候相当受限制。你有什么想法是怎么回事吗？也许缺少/etc/X11/xorg.conf文件可能是问题所在，但我不知道为什么它不在那里。
注意： 从16.04的主要发布版本开始，错误已经从“未检测到设备”和“未找到屏幕”变成了“无法初始化GLX扩展（找不到兼容的NVIDIA X驱动程序）”。现在，lightdm启动更容易了，但我仍然无法通过登录界面。
进一步编辑： 我一直都禁用了安全启动。我安装了bumblebee，它添加了nvidia驱动程序（尝试了304和340），但无法启动使用nVidia显卡的程序。进一步调查显示，由于类似以下原因，nvidia的modprobe失败：
我尝试了一个较新的驱动程序版本（361），但它一直无法正常工作。我在某个地方读到i915驱动程序引起了这个问题，但我没有安装它们。
更多信息： 这似乎是根本原因。当nVidia驱动程序与其DKMS模块一起安装时，我无法将其插入内核（使用modprobe命令）。报告的错误是找不到特定的PCI端口（根据lspci命令应该在那里）。很抱歉，我没有保存下确切的措辞。
我的笔记本电脑配备了混合nVidia/Intel图形和Optimus技术（我并不需要GPU切换，但我希望nVidia能正常运行），具体的nVidia型号是GT630M。
这是Xorg.0.log文件：
[ 41.529]
X.Org X Server 1.18.3
Release Date: 2016-04-04
[ 41.529] X Protocol Version 11, Revision 0
[ 41.529] Build Operating System: Linux 3.13.0-85-generic x86_64 Ubuntu
[ 41.529] Current Operating System: Linux dugi 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64
[ 41.529] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=77b76089-cd8b-4d0c-b074-1ec581c0a8a9 ro quiet splash
[ 41.529] Build Date: 07 April 2016 09:18:50AM
[ 41.529] xorg-server 2:1.18.3-1ubuntu2 (For technical support please see http://www.ubuntu.com/support)
[ 41.529] Current version of pixman: 0.33.6
[ 41.529] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 41.529] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 41.529] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Apr 22 00:40:13 2016
[ 41.530] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 41.530] (==) No Layout section. Using the first Screen section.
[ 41.530] (==) No screen section available. Using defaults.
[ 41.530] (**) |-->Screen "Default Screen Section" (0)
[ 41.530] (**) | |-->Monitor "<default monitor>"
[ 41.530] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 41.530] (==) Automatically adding devices
[ 41.530] (==) Automatically enabling devices
[ 41.530] (==) Automatically adding GPU devices
[ 41.530] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 41.530] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 41.530] Entry deleted from font path.
[ 41.530] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[ 41.530] Entry deleted from font path.
[ 41.530] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 41.530] Entry deleted from font path.
[ 41.530] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[ 41.530] Entry deleted from font path.
[ 41.530] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 41.530] Entry deleted from font path.
[ 41.530] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 41.530] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[ 41.530] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 41.530] (II) Loader magic: 0x55a83676cda0
[ 41.530] (II) Module ABI versions:
[ 41.530] X.Org ANSI C Emulation: 0.4
[ 41.530] X.Org Video Driver: 20.0
[ 41.530] X.Org XInput driver : 22.1
[ 41.530] X.Org Server Extension : 9.0
[ 41.530] (++) using VT number 7
[ 41.530] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 41.531] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 41.532] (--) PCI:*(0:0:2:0) 8086:0166:1028:0590 rev 9, Mem @ 0xf7400000/4194304, 0xd0000000/268435456, I/O @ 0x0000f000/64
[ 41.532] (WW) "glamoregl" will not be loaded unless you've specified it to be loaded elsewhere.
[ 41.532] (II) "glx" will be loaded by default.
[ 41.532] (II) LoadModule: "glx"
[ 41.532] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/libglx.so
[ 41.537] (II) Module glx: vendor="NVIDIA Corporation"
[ 41.537] compiled for 4.0.2, module version = 1.0.0
[ 41.537] Module class: X.Org Server Extension
[ 41.537] (II) NVIDIA GLX Module 304.131 Sun Nov 8 22:03:20 PST 2015
[ 41.537] (==) Matched intel as autoconfigured driver 0
[ 41.537] (==) Matched intel as autoconfigured driver 1
[ 41.537] (==) Matched modesetting as autoconfigured driver 2
[ 41.537] (==) Matched fbdev as autoconfigured driver 3
[ 41.537] (==) Matched vesa as autoconfigured driver 4
[ 41.537] (==) Assigned the driver to the xf86ConfigLayout
[ 41.537] (II) LoadModule: "intel"
[ 41.537] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 41.537] (II) Module intel: vendor="X.Org Foundation"
[ 41.537] compiled for 1.18.1, module version = 2.99.917
[ 41.537] Module class: X.Org Video Driver
[ 41.537] ABI class: X.Org Video Driver, version 20.0
[ 41.537] (II) LoadModule: "modesetting"
[ 41.537] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 41.537] (II) Module modesetting: vendor="X.Org Foundation"
[ 41.537] compiled for 1.18.3, module version = 1.18.3
[ 41.537] Module class: X.Org Video Driver
[ 41.537] ABI class: X.Org Video Driver, version 20.0
[ 41.537] (II) LoadModule: "fbdev"
[ 41.538] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 41.538] (II) Module fbdev: vendor="X.Org Foundation"
[ 41.538] compiled for 1.18.1, module version = 0.4.4
[ 41.538] Module class: X.Org Video Driver
[ 41.538] ABI class: X.Org Video Driver, version 20.0
[ 41.538] (II) LoadModule: "vesa"
[ 41.538] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 41.538] (II) Module vesa: vendor="X.Org Foundation"
[ 41.538] compiled for 1.18.1, module version = 2.3.4
[ 41.538] Module class: X.Org Video Driver
[ 41.538] ABI class: X.Org Video Driver, version 20.0
[ 41.538] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[ 41.538] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[ 41.538] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[ 41.538] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300
[ 41.538] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 41.538] (II) FBDEV: driver for framebuffer: fbdev
[ 41.538] (II) VESA: driver for VESA chipsets: vesa
[ 41.538] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20151010
[ 41.538] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 (Timo Aaltonen <tjaalton@debian.org>)
[ 41.538] (II) intel(0): SNA compiled for use with valgrind
[ 41.538] (WW) Falling back to old probe method for modesetting
[ 41.538] (WW) Falling back to old probe method for fbdev
[ 41.538] (II) Loading sub module "fbdevhw"
[ 41.538] (II) LoadModule: "fbdevhw"
[ 41.538] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 41.538] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 41.538] compiled for 1.18.3, module version = 0.0.2
[ 41.538] ABI class: X.Org Video Driver, version 20.0
[ 41.538] (WW) Falling back to old probe method for vesa
[ 41.539] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4000
[ 41.539] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2, avx; using a maximum of 2 threads
[ 41.539] (II) intel(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 41.539] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[ 41.539] (==) intel(0): RGB weight 888
[ 41.539] (==) intel(0): Default visual is TrueColor
[ 41.539] (II) intel(0): Output LVDS1 has no monitor section
[ 41.552] (--) intel(0): Found backlight control interface intel_backlight (type 'raw') for output LVDS1
[ 41.552] (II) intel(0): Enabled output LVDS1
[ 41.552] (II) intel(0): Output VGA1 has no monitor section
[ 41.552] (II) intel(0): Enabled output VGA1
[ 41.552] (II) intel(0): Output HDMI1 has no monitor section
[ 41.552] (II) intel(0): Enabled output HDMI1
[ 41.552] (II) intel(0): Output DP1 has no monitor section
[ 41.552] (II) intel(0): Enabled output DP1
[ 41.552] (--) intel(0): Using a maximum size of 256x256 for hardware cursors
[ 41.552] (II) intel(0): Output VIRTUAL1 has no monitor section
[ 41.552] (II) intel(0): Enabled output VIRTUAL1
[ 41.552] (--) intel(0): Output LVDS1 using initial mode 1366x768 on pipe 0
[ 41.552] (==) intel(0): TearFree disabled
[ 41.552] (==) intel(0): DPI set to (96, 96)
[ 41.552] (II) Loading sub module "dri2"
[ 41.552] (II) LoadModule: "dri2"
[ 41.552] (II) Module "dri2" already built-in
[ 41.552] (II) Loading sub module "present"
[ 41.552] (II) LoadModule: "present"
[ 41.552] (II) Module "present" already built-in
[ 41.552] (II) UnloadModule: "modesetting"
[ 41.552] (II) Unloading modesetting
[ 41.552] (II) UnloadModule: "fbdev"
[ 41.552] (II) Unloading fbdev
[ 41.553] (II) UnloadSubModule: "fbdevhw"
[ 41.553] (II) Unloading fbdevhw
[ 41.553] (II) UnloadModule: "vesa"
[ 41.553] (II) Unloading vesa
[ 41.553] (==) Depth 24 pixmap format is 32 bpp
[ 41.553] (II) intel(0): SNA initialized with Ivybridge (gen7, gt2) backend
[ 41.553] (==) intel(0): Backing store enabled
[ 41.553] (==) intel(0): Silken mouse enabled
[ 41.553] (II) intel(0): HW Cursor enabled
[ 41.553] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[ 41.553] (==) intel(0): DPMS enabled
[ 41.553] (==) intel(0): Display hotplug detection enabled
[ 41.553] (II) intel(0): [DRI2] Setup complete
[ 41.553] (II) intel(0): [DRI2] DRI driver: i965
[ 41.553] (II) intel(0): [DRI2] VDPAU driver: va_gl
[ 41.553] (II) intel(0): direct rendering: DRI2 enabled
[ 41.553] (II) intel(0): hardware support for Present enabled
[ 41.553] (--) RandR disabled
[ 41.556] (II) SELinux: Disabled on system
[ 41.557] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
[ 41.558] (II) intel(0): switch to mode 1366x768@60.0 on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 41.558] (II) intel(0): Setting screen physical size to 361 x 203
[ 41.582] (II) config/udev: Adding input device Power Button (/dev/input/event3)
[ 41.582] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 41.582] (II) LoadModule: "evdev"
[ 41.582] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 41.582] (II) Module evdev: vendor="X.Org Foundation"
[ 41.582] compiled for 1.18.1, module version = 2.10.1
[ 41.582] Module class: X.Org XInput Driver
[ 41.582] ABI class: X.Org XInput driver, version 22.1
[ 41.582] (II) Using input driver 'evdev' for 'Power Button'
[ 41.582] (**) Power Button: always reports core events
[ 41.582] (**) evdev: Power Button: Device: "/dev/input/event3"
[ 41.582] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 41.583] (--) evdev: Power Button: Found keys
[ 41.583] (II) evdev: Power Button: Configuring as keyboard
[ 41.583] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3/event3"
[ 41.583] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 41.583] (**) Option "xkb_rules" "evdev"
[ 41.583] (**) Option "xkb_model" "pc105"
[ 41.583] (**) Option "xkb_layout" "sk"
[ 41.583] (**) Option "xkb_variant" "qwerty"
[ 41.596] (II) config/udev: Adding input device Video Bus (/dev/input/event6)
[ 41.596] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 41.596] (II) Using input driver 'evdev' for 'Video Bus'
[ 41.596] (**) Video Bus: always reports core events
[ 41.596] (**) evdev: Video Bus: Device: "/dev/input/event6"
[ 41.596] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 41.596] (--) evdev: Video Bus: Found keys
[ 41.596] (II) evdev: Video Bus: Configuring as keyboard
[ 41.596] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input8/event6"
[ 41.596] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 41.596] (**) Option "xkb_rules" "evdev"
[ 41.596] (**) Option "xkb_model" "pc105"
[ 41.596] (**) Option "xkb_layout" "sk"
[ 41.596] (**) Option "xkb_variant" "qwerty"
[ 41.596] (II) config/udev: Adding input device Video Bus (/dev/input/event5)
[ 41.596] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 41.596] (II) Using input driver 'evdev' for 'Video Bus'
[ 41.596] (**) Video Bus: always reports core events
[ 41.596] (**) evdev: Video Bus: Device: "/dev/input/event5"
[ 41.596] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 41.596] (--) evdev: Video Bus: Found keys
[ 41.596] (II) evdev: Video Bus: Configuring as keyboard
[ 41.596] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/LNXVIDEO:00/input/input7/event5"
[ 41.596] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[ 41.596] (**) Option "xkb_rules" "evdev"
[ 41.596] (**) Option "xkb_model" "pc105"
[ 41.596] (**) Option "xkb_layout" "sk"
[ 41.596] (**) Option "xkb_variant" "qwerty"
[ 41.597] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[ 41.597] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 41.597] (II) Using input driver 'evdev' for 'Power Button'
[ 41.597] (**) Power Button: always reports core events
[ 41.597] (**) evdev: Power Button: Device: "/dev/input/event1"
[ 41.597] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 41.597] (--) evdev: Power Button: Found keys
[ 41.597] (II) evdev: Power Button: Configuring as keyboard
[ 41.597] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1/event1"
[ 41.597] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 9)
[ 41.597] (**) Option "xkb_rules" "evdev"
[ 41.597] (**) Option "xkb_model" "pc105"
[ 41.597] (**) Option "xkb_layout" "sk"
[ 41.597] (**) Option "xkb_variant" "qwerty"
[ 41.597] (II) config/udev: Adding input device Lid Switch (/dev/input/event0)
[ 41.597] (II) No input driver specified, ignoring this device.
[ 41.597] (II) This device may have been added with another device file.
[ 41.598] (II) config/udev: Adding input device Sleep Button (/dev/input/event2)
[ 41.598] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[ 41.598] (II) Using input driver 'evdev' for 'Sleep Button'
[ 41.598] (**) Sleep Button: always reports core events
[ 41.598] (**) evdev: Sleep Button: Device: "/dev/input/event2"
[ 41.598] (--) evdev: Sleep Button: Vendor 0 Product 0x3
[ 41.598] (--) evdev: Sleep Button: Found keys
[ 41.598] (II) evdev: Sleep Button: Configuring as keyboard
[ 41.598] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2/event2"
[ 41.598] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 10)
[ 41.598] (**) Option "xkb_rules" "evdev"
[ 41.598] (**) Option "xkb_model" "pc105"
[ 41.598] (**) Option "xkb_layout" "sk"
[ 41.598] (**) Option "xkb_variant" "qwerty"
[ 41.598] (II) config/udev: Adding input device HID 04d9:1133 (/dev/input/event7)
[ 41.598] (**) HID 04d9:1133: Applying InputClass "evdev pointer catchall"
[ 41.598] (II) Using input driver 'evdev' for 'HID 04d9:1133'
[ 41.598] (**) HID 04d9:1133: always reports core events
[ 41.598] (**) evdev: HID 04d9:1133: Device: "/dev/input/event7"
[ 41.652] (--) evdev: HID 04d9:1133: Vendor 0x4d9 Product 0x1133
[ 41.652] (--) evdev: HID 04d9:1133: Found 3 mouse buttons
[ 41.652] (--) evdev: HID 04d9:1133: Found scroll wheel(s)
[ 41.652] (--) evdev: HID 04d9:1133: Found relative axes
[ 41.652] (--) evdev: HID 04d9:1133: Found x and y relative axes
[ 41.652] (II) evdev: HID 04d9:1133: Configuring as mouse
[ 41.652] (II) evdev: HID 04d9:1133: Adding scrollwheel support
[ 41.652] (**) evdev: HID 04d9:1133: YAxisMapping: buttons 4 and 5
[ 41.652] (**) evdev: HID 04d9:1133: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 41.652] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.0/0003:04D9:1133.0001/input/input9/event7"
[ 41.652] (II) XINPUT: Adding extended input device "HID 04d9:1133" (type: MOUSE, id 11)
[ 41.652] (II) evdev: HID 04d9:1133: initialized for relative axes.
[ 41.652] (**) HID 04d9:1133: (accel) keeping acceleration scheme 1
[ 41.652] (**) HID 04d9:1133: (accel) acceleration profile 0
[ 41.652] (**) HID 04d9:1133: (accel) acceleration factor: 2.000
[ 41.652] (**) HID 04d9:1133: (accel) acceleration threshold: 4
[ 41.653] (II) config/udev: Adding input device HID 04d9:1133 (/dev/input/mouse0)
[ 41.653] (II) No input driver specified, ignoring this device.
[ 41.653] (II) This device may have been added with another device file.
[ 41.653] (II) config/udev: Adding input device Laptop_Integrated_Webcam_HD (/dev/input/event10)
[ 41.653] (**) Laptop_Integrated_Webcam_HD: Applying InputClass "evdev keyboard catchall"
[ 41.653] (II) Using input driver 'evdev' for 'Laptop_Integrated_Webcam_HD'
[ 41.653] (**) Laptop_Integrated_Webcam_HD: always reports core events
[ 41.653] (**) evdev: Laptop_Integrated_Webcam_HD: Device: "/dev/input/event10"
[ 41.653] (--) evdev: Laptop_Integrated_Webcam_HD: Vendor 0x1bcf Product 0x2982
[ 41.653] (--) evdev: Laptop_Integrated_Webcam_HD: Found keys
[ 41.653] (II) evdev: Laptop_Integrated_Webcam_HD: Configuring as keyboard
[ 41.653] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.0/input/input12/event10"
[ 41.653] (II) XINPUT: Adding extended input device "Laptop_Integrated_Webcam_HD" (type: KEYBOARD, id 12)
[ 41.653] (**) Option "xkb_rules" "evdev"
[ 41.653] (**) Option "xkb_model" "pc105"
[ 41.653] (**) Option "xkb_layout" "sk"
[ 41.653] (**) Option "xkb_variant" "qwerty"
[ 41.653] (II) config/udev: Adding input device HDA Intel PCH Mic (/dev/input/event12)
[ 41.653] (II) No input driver specified, ignoring this device.
[ 41.653] (II) This device may have been added with another device file.
[ 41.654] (II) config/udev: Adding input device HDA Intel PCH Headphone (/dev/input/event13)
[ 41.654] (II) No input driver specified, ignoring this device.
[ 41.654] (II) This device may have been added with another device file.
[ 41.654] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event14)
[ 41.654] (II) No input driver specified, ignoring this device.
[ 41.654] (II) This device may have been added with another device file.
[ 41.654] (II) config/udev: Adding input device Atmel Atmel maXTouch Digitizer (/dev/input/event9)
[ 41.654] (**) Atmel Atmel maXTouch Digitizer: Applying InputClass "evdev touchscreen catchall"
[ 41.654] (II) Using input driver 'evdev' for 'Atmel Atmel maXTouch Digitizer'
[ 41.654] (**) Atmel Atmel maXTouch Digitizer: always reports core events
[ 41.654] (**) evdev: Atmel Atmel maXTouch Digitizer: Device: "/dev/input/event9"
[ 41.709] (--) evdev: Atmel Atmel maXTouch Digitizer: Vendor 0x3eb Product 0x8803
[ 41.709] (--) evdev: Atmel Atmel maXTouch Digitizer: Found absolute axes
[ 41.709] (--) evdev: Atmel Atmel maXTouch Digitizer: Found absolute multitouch axes
[ 41.709] (II) evdev: Atmel Atmel maXTouch Digitizer: No buttons found, faking one.
[ 41.709] (--) evdev: Atmel Atmel maXTouch Digitizer: Found x and y absolute axes
[ 41.709] (--) evdev: Atmel Atmel maXTouch Digitizer: Found absolute touchscreen
[ 41.709] (II) evdev: Atmel Atmel maXTouch Digitizer: Configuring as touchscreen
[ 41.709] (**) evdev: Atmel Atmel maXTouch Digitizer: YAxisMapping: buttons 4 and 5
[ 41.709] (**) evdev: Atmel Atmel maXTouch Digitizer: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 41.709] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/0003:03EB:8803.0002/input/input10/event9"
[ 41.709] (II) XINPUT: Adding extended input device "Atmel Atmel maXTouch Digitizer" (type: TOUCHSCREEN, id 13)
[ 41.709] (II) evdev: Atmel Atmel maXTouch Digitizer: initialized for absolute axes.
[ 41.709] (**) Atmel Atmel maXTouch Digitizer: (accel) keeping acceleration scheme 1
[ 41.709] (**) Atmel Atmel maXTouch Digitizer: (accel) acceleration profile 0
[ 41.709] (**) Atmel Atmel maXTouch Digitizer: (accel) acceleration factor: 2.000
[ 41.709] (**) Atmel Atmel maXTouch Digitizer: (accel) acceleration threshold: 4
[ 41.710] (II) config/udev: Adding input device Atmel Atmel maXTouch Digitizer (/dev/input/mouse2)
[ 41.710] (II) No input driver specified, ignoring this device.
[ 41.710] (II) This device may have been added with another device file.
[ 41.710] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event4)
[ 41.710] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[ 41.710] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'
[ 41.710] (**) AT Translated Set 2 keyboard: always reports core events
[ 41.710] (**) evdev: AT Translated Set 2 keyboard: Device: "/dev/input/event4"
[ 41.710] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1
[ 41.710] (--) evdev: AT Translated Set 2 keyboard: Found keys
[ 41.710] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard
[ 41.710] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input4/event4"
[ 41.710] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 14)
[ 41.710] (**) Option "xkb_rules" "evdev"
[ 41.710] (**) Option "xkb_model" "pc105"
[ 41.710] (**) Option "xkb_layout" "sk"
[ 41.710] (**) Option "xkb_variant" "qwerty"
[ 41.710] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event8)
###/// A load of unrelated stuff about touchpad ///###
[ 41.794] (**) Option "config_info" "udev:/sys/devices/virtual/input/input13/event11"
[ 41.794] (II) XINPUT: Adding extended input device "Dell WMI hotkeys" (type: KEYBOARD, id 16)
[ 41.794] (**) Option "xkb_rules" "evdev"
[ 41.794] (**) Option "xkb_model" "pc105"
[ 41.794] (**) Option "xkb_layout" "sk"
[ 41.794] (**) Option "xkb_variant" "qwerty"
[ 42.345] (II) intel(0): EDID vendor "CMN", prod id 5558
[ 42.345] (II) intel(0): Printing DDC gathered Modelines:
[ 42.345] (II) intel(0): Modeline "1366x768"x0.0 76.66 1366 1397 1462 1592 768 772 784 802 +hsync -vsync (48.2 kHz eP)
[ 42.345] (II) intel(0): Modeline "1366x768"x0.0 51.01 1366 1380 1409 1592 768 770 777 800 +hsync -vsync (32.0 kHz e)
这是当前正在使用的xorg.conf.XXXXXXXX文件：
Section "ServerLayout"
Identifier "layout"
Screen 0 "nvidia"
Inactive "intel"
EndSection
Section "Device"
Identifier "intel"
Driver "modesetting"
BusID "PCI:0@0:2:0"
Option "AccelMethod" "None"
EndSection
Section "Screen"
Identifier "intel"
Device "intel"
EndSection
Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:2@0:0:0"
Option "ConstrainCursor" "off"
EndSection
Section "Screen"
Identifier "nvidia"
Device "nvidia"
Option "AllowEmptyInitialConfiguration" "on"
Option "IgnoreDisplayDevices" "CRT"
EndSection
现在，我只能使用nouveau/intel，有时候相当受限制。你有什么想法是怎么回事吗？也许缺少/etc/X11/xorg.conf文件可能是问题所在，但我不知道为什么它不在那里。
注意： 从16.04的主要发布版本开始，错误已经从“未检测到设备”和“未找到屏幕”变成了“无法初始化GLX扩展（找不到兼容的NVIDIA X驱动程序）”。现在，lightdm启动更容易了，但我仍然无法通过登录界面。
进一步编辑： 我一直都禁用了安全启动。我安装了bumblebee，它添加了nvidia驱动程序（尝试了304和340），但无法启动使用nVidia显卡的程序。进一步调查显示，由于类似以下原因，nvidia的modprobe失败：
could not insert 'nvidia': Unknown symbol in module, or unknown parameter (see dmesg)
我尝试了一个较新的驱动程序版本（361），但它一直无法正常工作。我在某个地方读到i915驱动程序引起了这个问题，但我没有安装它们。
更多信息： 这似乎是根本原因。当nVidia驱动程序与其DKMS模块一起安装时，我无法将其插入内核（使用modprobe命令）。报告的错误是找不到特定的PCI端口（根据lspci命令应该在那里）。很抱歉，我没有保存下确切的措辞。