小弟使用Debian 8.5系统，今天发现一个奇怪的问题，使用xvinfo命令显示no adaptors present
一下是一些系统命令信息：
xdpyinfo：
root@xexerse:/etc/X11# xdpyinfo
name of display: 
version number: 11.0
vendor string: The X.Org Foundation
vendor release number: 11604000
X.Org version: 1.16.4
maximum request size: 16777212 bytes
motion buffer size: 256
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 7
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 15, bits_per_pixel 16, scanline_pad 32
depth 16, bits_per_pixel 16, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
depth 32, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 8, maximum 255
focus: window 0x1e00007, revert to Parent
number of extensions: 29
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
DRI3
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
Present
RANDR
RECORD
RENDER
SECURITY
SGI-GLX
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
default screen number: 0
number of screens: 1
screen #0:
dimensions: 1024x768 pixels (271x203 millimeters)
resolution: 96x96 dots per inch
depths (7): 24, 1, 4, 8, 15, 16, 32
root window id: 0x17b
depth of root window: 24 planes
number of colormaps: minimum 1, maximum 1
default colormap: 0x20
default number of colormap cells: 256
preallocated pixels: black 0, white 16777215
options: backing-store WHEN MAPPED, save-unders NO
largest cursor: 64x64
current input event mask: 0xda4033
KeyPressMask KeyReleaseMask EnterWindowMask
LeaveWindowMask KeymapStateMask StructureNotifyMask
SubstructureNotifyMask SubstructureRedirectMask PropertyChangeMask
ColormapChangeMask
number of visuals: 120
default visual id: 0x21
visual:
visual id: 0x21
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
。。。一下省略，和上面这一段类似
lspci:
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Broadwell-U Integrated Graphics
Flags: bus master, fast devsel, latency 0, IRQ 63
Memory at b1000000 (64-bit, non-prefetchable) [size=16]
Memory at c0000000 (64-bit, prefetchable) [size=256]
I/O ports at 4000 [size=64]
Expansion ROM at [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
dpkg -s xserver-xorg-video-intel :
Package: xserver-xorg-video-intel
Status: install 
installed
Priority: optional
Section: x11
Installed-Size: 2770
Maintainer: Debian X Strike Force debian-x@lists.debian.org
Architecture: i386
Source: xserver-xorg-video-intel (2:2.21.15-2)
Version: 2:2.21.15-2+b2
Provides: xorg-driver-video
Depends: libc6 (>= 2.17), libdrm-intel1 (>= 2.4.38), libdrm2 (>= 2.4.30), libpciaccess0 (>= 0.8.0+git20071002), libpixman-1-0 (>= 0.30.0), libudev1 (>= 183), libx11-6, libx11-xcb1, libxcb-dri2-0, libxcb-util0 (>= 0.3.8), libxcb1, libxv1, libxvmc1, xorg-video-abi-18, xserver-xorg-core (>= 2:1.15.99.903)
Description: X.Org X server – Intel i8xx, i9xx display driver
This package provides the driver for the Intel i8xx and i9xx family
of chipsets, including i810, i815, i830, i845, i855, i865, i915, i945
and i965 series chips.
.
This package also provides XvMC (XVideo Motion Compensation) drivers
for i810/i815 and i9xx and newer chipsets.
.
This package is built from the X.org xf86-video-intel driver module.
Homepage: x.org/
小弟的计算机配置：
CPU：Intel i7-5650U
显卡：Intel HD graphics 6000
哪位大神知道应该怎么设置么？[/size][/size][/size]