Debian7.0完成更新重启后黑屏

Question

笔记本配置：AMD A6，双显卡 Radeon HD7670M, Debian7.0 KDE系统，ATI官网Linux显卡驱动

在使用Debian自带的软件进行系统更新前，系统运行良好，可以进入KDE；但是在将系统更新到最新，重启电脑就进不去登录界面了，一直黑屏。可以进入字符登录界面，但是只要启动xorg或者startx命令，系统就会黑屏，也无法切换到字符界面。查看xorg.conf修改时间，检查发现xorg的配置文件xrog.conf没有修改。不想重新安装系统，请求各位的帮助和解决方法。

补充日志信息：

[   947.883] 
X.Org X Server 1.12.4
Release Date: 2012-08-27
[   947.884] X Protocol Version 11, Revision 0
[   947.884] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian
[   947.884] Current Operating System: Linux wmatrix 3.2.0-4-686-pae #1 SMP Debian 3.2.54-2 i686
[   947.884] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-686-pae root=UUID=94df3a6f-c859-490c-8d1f-5096b32e113f ro quiet
[   947.885] Build Date: 17 December 2013  08:37:13PM
[   947.885] xorg-server 2:1.12.4-6+deb7u2 (Julien Cristau <jcristau@debian.org>) 
[   947.885] Current version of pixman: 0.26.0
[   947.885] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[   947.885] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[   947.886] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Feb 21 00:47:37 2014
[   948.002] (==) Using config file: "/etc/X11/xorg.conf"
[   948.002] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[   948.071] (==) ServerLayout "aticonfig Layout"
[   948.072] (**) |-->Screen "aticonfig-Screen[0]-0" (0)
[   948.072] (**) |   |-->Monitor "aticonfig-Monitor[0]-0"
[   948.072] (**) |   |-->Device "aticonfig-Device[0]-0"
[   948.072] (==) Automatically adding devices
[   948.072] (==) Automatically enabling devices
[   948.124] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[   948.124] 	Entry deleted from font path.
[   948.150] (WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist.
[   948.150] 	Entry deleted from font path.
[   948.150] (==) 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,
	built-ins
[   948.150] (==) ModulePath set to "/usr/lib/xorg/modules"
[   948.150] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[   948.150] (II) Loader magic: 0xb77875a0
[   948.150] (II) Module ABI versions:
[   948.150] 	X.Org ANSI C Emulation: 0.4
[   948.150] 	X.Org Video Driver: 12.1
[   948.150] 	X.Org XInput driver : 16.0
[   948.150] 	X.Org Server Extension : 6.0
[   948.152] (--) PCI:*(0:0:1:0) 1002:9647:1043:2122 rev 0, Mem @ 0xb0000000/268435456, 0xfeb00000/262144, I/O @ 0x0000f000/256
[   948.153] (--) PCI: (0:1:0:0) 1002:6840:1043:2122 rev 0, Mem @ 0xc0000000/268435456, 0xfea20000/131072, I/O @ 0x0000e000/256, BIOS @ 0x????????/131072
[   948.153] (II) Open ACPI successful (/var/run/acpid.socket)
[   948.153] (II) "extmod" will be loaded by default.
[   948.153] (II) "dbe" will be loaded by default.
[   948.153] (II) "glx" will be loaded by default.
[   948.153] (II) "record" will be loaded by default.
[   948.153] (II) "dri" will be loaded by default.
[   948.153] (II) "dri2" will be loaded by default.
[   948.153] (II) LoadModule: "extmod"
[   948.248] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
[   948.272] (II) Module extmod: vendor="X.Org Foundation"
[   948.272] 	compiled for 1.12.4, module version = 1.0.0
[   948.272] 	Module class: X.Org Server Extension
[   948.272] 	ABI class: X.Org Server Extension, version 6.0
[   948.272] (II) Loading extension SELinux
[   948.272] (II) Loading extension MIT-SCREEN-SAVER
[   948.272] (II) Loading extension XFree86-VidModeExtension
[   948.273] (II) Loading extension XFree86-DGA
[   948.273] (II) Loading extension DPMS
[   948.273] (II) Loading extension XVideo
[   948.273] (II) Loading extension XVideo-MotionCompensation
[   948.273] (II) Loading extension X-Resource
[   948.273] (II) LoadModule: "dbe"
[   948.273] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
[   948.288] (II) Module dbe: vendor="X.Org Foundation"
[   948.288] 	compiled for 1.12.4, module version = 1.0.0
[   948.288] 	Module class: X.Org Server Extension
[   948.288] 	ABI class: X.Org Server Extension, version 6.0
[   948.288] (II) Loading extension DOUBLE-BUFFER
[   948.288] (II) LoadModule: "glx"
[   948.289] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[   948.325] (II) Module glx: vendor="X.Org Foundation"
[   948.325] 	compiled for 1.12.4, module version = 1.0.0
[   948.326] 	ABI class: X.Org Server Extension, version 6.0
[   948.326] (==) AIGLX enabled
[   948.326] (II) Loading extension GLX
[   948.326] (II) LoadModule: "record"
[   948.327] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so
[   948.328] (II) Module record: vendor="X.Org Foundation"
[   948.328] 	compiled for 1.12.4, module version = 1.13.0
[   948.328] 	Module class: X.Org Server Extension
[   948.328] 	ABI class: X.Org Server Extension, version 6.0
[   948.328] (II) Loading extension RECORD
[   948.328] (II) LoadModule: "dri"
[   948.329] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so
[   948.359] (II) Module dri: vendor="X.Org Foundation"
[   948.359] 	compiled for 1.12.4, module version = 1.0.0
[   948.360] 	ABI class: X.Org Server Extension, version 6.0
[   948.360] (II) Loading extension XFree86-DRI
[   948.360] (II) LoadModule: "dri2"
[   948.360] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
[   948.376] (II) Module dri2: vendor="X.Org Foundation"
[   948.376] 	compiled for 1.12.4, module version = 1.2.0
[   948.376] 	ABI class: X.Org Server Extension, version 6.0
[   948.376] (II) Loading extension DRI2
[   948.376] (II) LoadModule: "fglrx"
[   948.377] (II) Loading /usr/lib/xorg/modules/drivers/fglrx_drv.so
[   948.591] (II) Module fglrx: vendor="FireGL - AMD Technologies Inc."
[   948.591] 	compiled for 1.4.99.906, module version = 12.10.5
[   948.591] 	Module class: X.Org Video Driver
[   948.593] (II) Loading sub module "fglrxdrm"
[   948.593] (II) LoadModule: "fglrxdrm"
[   948.593] (II) Loading /usr/lib/xorg/modules/linux/libfglrxdrm.so
[   948.637] (II) Module fglrxdrm: vendor="FireGL - AMD Technologies Inc."
[   948.637] 	compiled for 1.4.99.906, module version = 12.10.5
[   948.637] (II) AMD Proprietary Linux Driver Version Identifier:12.10.05
[   948.637] (II) AMD Proprietary Linux Driver Release Identifier: 12.104                               
[   948.637] (II) AMD Proprietary Linux Driver Build Date: Mar 28 2013 21:07:22
[   948.637] (--) using VT number 7

[   948.643] (WW) Falling back to old probe method for fglrx
[   948.762] (II) Loading PCS database from /etc/ati/amdpcsdb /etc/ati/amdpcsdb.default
[   948.769] ukiDynamicMajor: found major device number 251
[   948.769] ukiDynamicMajor: found major device number 251
[   948.769] ukiOpenByBusid: Searching for BusID PCI:0:1:0
[   948.769] ukiOpenDevice: node name is /dev/ati/card0
[   948.769] ukiOpenDevice: open result is 10, (OK)
[   949.397] ukiOpenByBusid: ukiOpenMinor returns 10
[   949.397] ukiOpenByBusid: ukiGetBusid reports PCI:0:1:0
[   949.470] (WW) fglrx: No matching Device section for instance (BusID PCI:0@0:1:0) found
[   949.470] (--) Chipset Supported AMD Graphics Processor (0x6840) found
[   949.471] (WW) fglrx: No matching Device section for instance (BusID PCI:0@0:1:1) found
[   949.471] (**) ChipID override: 0x9647
[   949.471] (**) Chipset Supported AMD Graphics Processor (0x9647) found
[   949.472] (II) AMD Video driver is running on a device belonging to a group targeted for this release
[   949.489] (II) AMD Video driver is signed
[   949.491] (II) fglrx(0): pEnt->device->identifier=0xb8ad6cc8
[   949.492] (II) pEnt->device->identifier=(nil)
[   949.492] (II) fglrx(0): === [xdl_xs112_atiddxPreInit] === begin
[   949.494] (II) Loading sub module "vgahw"
[   949.494] (II) LoadModule: "vgahw"
[   949.494] (II) Loading /usr/lib/xorg/modules/libvgahw.so
[   949.511] (II) Module vgahw: vendor="X.Org Foundation"
[   949.511] 	compiled for 1.12.4, module version = 0.1.0
[   949.511] 	ABI class: X.Org Video Driver, version 12.1
[   949.511] (**) fglrx(0): Depth 24, (--) framebuffer bpp 32
[   949.512] (II) fglrx(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[   949.512] (==) fglrx(0): Default visual is TrueColor
[   949.512] (**) fglrx(0): Option "DPMS" "true"
[   949.512] (==) fglrx(0): RGB weight 888
[   949.512] (II) fglrx(0): Using 8 bits per RGB 
[   949.512] (==) fglrx(0): Buffer Tiling is ON
[   949.512] (II) Loading sub module "fglrxdrm"
[   949.512] (II) LoadModule: "fglrxdrm"
[   949.512] (II) Loading /usr/lib/xorg/modules/linux/libfglrxdrm.so
[   949.512] (II) Module fglrxdrm: vendor="FireGL - AMD Technologies Inc."
[   949.512] 	compiled for 1.4.99.906, module version = 12.10.5
[   949.517] ukiDynamicMajor: found major device number 251
[   949.517] ukiDynamicMajor: found major device number 251
[   949.517] ukiOpenByBusid: Searching for BusID PCI:1:0:0
[   949.517] ukiOpenDevice: node name is /dev/ati/card0
[   949.517] ukiOpenDevice: open result is 14, (OK)
[   949.517] ukiOpenByBusid: ukiOpenMinor returns 14
[   949.517] ukiOpenByBusid: ukiGetBusid reports PCI:0:1:0
[   949.517] ukiOpenDevice: node name is /dev/ati/card1
[   950.587] ukiOpenDevice: open result is 14, (OK)
[   950.587] ukiOpenByBusid: ukiOpenMinor returns 14
[   950.587] ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0
[   950.587] ukiDynamicMajor: found major device number 251
[   950.587] ukiDynamicMajor: found major device number 251
[   950.587] ukiOpenByBusid: Searching for BusID PCI:0:1:0
[   950.587] ukiOpenDevice: node name is /dev/ati/card0
[   950.587] ukiOpenDevice: open result is 15, (OK)
[   950.587] ukiOpenByBusid: ukiOpenMinor returns 15
[   950.587] ukiOpenByBusid: ukiGetBusid reports PCI:0:1:0
[   950.587] (**) fglrx(0): NoAccel = NO
[   950.587] (**) fglrx(0): AMD 2D Acceleration Architecture enabled
[   950.587] (--) fglrx(0): Chipset: "AMD Radeon HD 7600M Series" (Chipset = 0x6840)
[   950.587] (--) fglrx(0): (PciSubVendor = 0x1043, PciSubDevice = 0x2122)
[   950.587] (==) fglrx(0): board vendor info: third party graphics adapter - NOT original AMD
[   950.587] (--) fglrx(0): Linear framebuffer (phys) at 0xc0000000
[   950.587] (--) fglrx(0): MMIO registers at 0xfea20000
[   950.587] (--) fglrx(0): I/O port at 0x0000e000
[   950.587] (==) fglrx(0): ROM-BIOS at 0x000c0000
[   950.616] (II) fglrx(0): AC Adapter is used
[   950.679] (II) Loading sub module "vbe"
[   950.679] (II) LoadModule: "vbe"
[   950.679] (II) Loading /usr/lib/xorg/modules/libvbe.so
[   950.714] (II) Module vbe: vendor="X.Org Foundation"
[   950.714] 	compiled for 1.12.4, module version = 1.1.0
[   950.714] 	ABI class: X.Org Video Driver, version 12.1
[   950.714] (II) Loading sub module "int10"
[   950.714] (II) LoadModule: "int10"
[   950.714] (II) Loading /usr/lib/xorg/modules/libint10.so
[   950.742] (II) Module int10: vendor="X.Org Foundation"
[   950.742] 	compiled for 1.12.4, module version = 1.0.0
[   950.742] 	ABI class: X.Org Video Driver, version 12.1
[   950.742] (II) fglrx(0): initializing int10
[   950.762] (II) fglrx(0): Primary V_BIOS segment is: 0xc000
[   950.771] (II) fglrx(0): VESA BIOS detected
[   950.771] (II) fglrx(0): VESA VBE Version 3.0
[   950.771] (II) fglrx(0): VESA VBE Total Mem: 16384 kB
[   950.771] (II) fglrx(0): VESA VBE OEM: AMD ATOMBIOS
[   950.771] (II) fglrx(0): VESA VBE OEM Software Rev: 12.43
[   950.771] (II) fglrx(0): VESA VBE OEM Vendor: (C) 1988-2010, AMD Technologies Inc. 
[   950.771] (II) fglrx(0): VESA VBE OEM Product: SUMO
[   950.771] (II) fglrx(0): VESA VBE OEM Product Rev: 01.00
[   950.772] (II) fglrx(0): AMD Video BIOS revision 9 or later detected
[   950.772] (--) fglrx(0): Video RAM: 1048576 kByte, Type: DDR3
[   950.772] (II) fglrx(0): PCIE card detected
[   950.772] (--) fglrx(0): Using per-process page tables (PPPT) as GART.
[   950.772] (WW) fglrx(0): board is an unknown third party board, chipset is supported
[   950.803] (II) fglrx(0): PowerXpress is enabled for AMD platform.
[   950.804] (--) fglrx(0): (PciSubVendor = 0x1043, PciSubDevice = 0x2122)
[   950.804] (==) fglrx(0): board vendor info: third party graphics adapter - NOT original AMD
[   950.804] (--) fglrx(0): Linear framebuffer (phys) at 0xb0000000
[   950.804] (--) fglrx(0): MMIO registers at 0xfeb00000
[   950.804] (--) fglrx(0): I/O port at 0x0000f000
[   950.804] (==) fglrx(0): ROM-BIOS at 0x000c0000
[   950.828] (II) fglrx(0): ATIF platform detected
[   950.829] (II) fglrx(0): AC Adapter is used
[   950.830] (II) fglrx(0): Primary V_BIOS segment is: 0xc000
[   950.830] (II) fglrx(0): AMD Video BIOS revision 9 or later detected
[   950.830] (--) fglrx(0): Video RAM: 524288 kByte, Type: DDR3
[   950.830] (II) fglrx(0): PCIE card detected
[   950.830] (--) fglrx(0): Using per-process page tables (PPPT) as GART.
[   950.831] (WW) fglrx(0): board is an unknown third party board, chipset is supported
[   950.831] (II) fglrx(0): [FB] MC range(MCFBBase = 0xf00000000, MCFBSize = 0x40000000)
[   950.831] (II) fglrx(0): [FB] MC range(MCFBBase = 0xf00000000, MCFBSize = 0x20000000)
[   950.831] (II) fglrx(0): RandR 1.2 support is enabled!
[   950.831] (II) fglrx(0): RandR 1.2 rotation support is enabled!
[   950.831] (==) fglrx(0): Center Mode is disabled 
[   950.831] (II) Loading sub module "fb"
[   950.831] (II) LoadModule: "fb"
[   950.831] (II) Loading /usr/lib/xorg/modules/libfb.so
[   950.851] (II) Module fb: vendor="X.Org Foundation"
[   950.851] 	compiled for 1.12.4, module version = 1.0.0
[   950.851] 	ABI class: X.Org ANSI C Emulation, version 0.4
[   950.851] (II) Loading sub module "ddc"
[   950.851] (II) LoadModule: "ddc"
[   950.851] (II) Module "ddc" already built-in
[   951.078] (II) fglrx(0): Output LVDS using monitor section aticonfig-Monitor[0]-0
[   951.078] (II) fglrx(0): Output DFP1 has no monitor section
[   951.078] (II) fglrx(0): Output CRT1 has no monitor section
[   951.079] (II) Loading sub module "ddc"
[   951.079] (II) LoadModule: "ddc"
[   951.079] (II) Module "ddc" already built-in
[   951.079] (II) fglrx(0): Connected Display0: LVDS
[   951.079] (II) fglrx(0):  Display0: Failed to get EDID information. 
[   951.081] (II) fglrx(0): EDID for output LVDS
[   951.081] (II) fglrx(0): Manufacturer: CMO  Model: 15a7  Serial#: 0
[   951.081] (II) fglrx(0): Year: 2010  Week: 31
[   951.081] (II) fglrx(0): EDID Version: 1.3
[   951.081] (II) fglrx(0): Digital Display Input
[   951.081] (II) fglrx(0): Max Image Size [cm]: horiz.: 35  vert.: 19
[   951.081] (II) fglrx(0): Gamma: 2.20
[   951.081] (II) fglrx(0): No DPMS capabilities specified
[   951.081] (II) fglrx(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
[   951.081] (II) fglrx(0): First detailed timing is preferred mode
[   951.081] (II) fglrx(0): redX: 0.617 redY: 0.340   greenX: 0.320 greenY: 0.598
[   951.081] (II) fglrx(0): blueX: 0.160 blueY: 0.084   whiteX: 0.313 whiteY: 0.329
[   951.081] (II) fglrx(0): Manufacturer's mask: 0
[   951.081] (II) fglrx(0): Supported detailed timing:
[   951.081] (II) fglrx(0): clock: 69.3 MHz   Image Size:  344 x 193 mm
[   951.081] (II) fglrx(0): h_active: 1366  h_sync: 1382  h_sync_end 1416 h_blank_end 1466 h_border: 0
[   951.081] (II) fglrx(0): v_active: 768  v_sync: 770  v_sync_end 776 v_blanking: 788 v_border: 0
[   951.081] (II) fglrx(0):  N156BGE-L21
[   951.081] (II) fglrx(0):  CMO
[   951.081] (II) fglrx(0):  N156BGE-L21
[   951.081] (II) fglrx(0): EDID (in hex):
[   951.081] (II) fglrx(0): 	00ffffffffffff000dafa71500000000
[   951.081] (II) fglrx(0): 	1f140103802313780a00259e57529929
[   951.081] (II) fglrx(0): 	15505400000001010101010101010101
[   951.082] (II) fglrx(0): 	010101010101121b5664500014301022
[   951.082] (II) fglrx(0): 	260058c110000018000000fe004e3135
[   951.082] (II) fglrx(0): 	364247452d4c32310a20000000fe0043
[   951.082] (II) fglrx(0): 	4d4f0a202020202020202020000000fe
[   951.082] (II) fglrx(0): 	004e3135364247452d4c32310a200095
[   951.082] (II) fglrx(0): EDID vendor "CMO", prod id 5543
[   951.082] (II) fglrx(0): Printing DDC gathered Modelines:
[   951.082] (II) fglrx(0): Modeline "1366x768"x0.0   69.30  1366 1382 1416 1466  768 770 776 788 -hsync -vsync (47.3 kHz eP)
[   951.082] (II) fglrx(0): Printing probed modes for output LVDS
[   951.082] (II) fglrx(0): Modeline "1366x768"x60.0   69.30  1366 1382 1416 1466  768 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "1360x768"x60.0   69.30  1360 1382 1416 1466  768 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "1280x768"x60.0   69.30  1280 1382 1416 1466  768 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "1280x720"x60.0   69.30  1280 1382 1416 1466  720 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "1024x768"x60.0   69.30  1024 1382 1416 1466  768 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "1024x600"x60.0   69.30  1024 1382 1416 1466  600 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "800x600"x60.0   69.30  800 1382 1416 1466  600 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "800x480"x60.0   69.30  800 1382 1416 1466  480 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): Modeline "640x480"x60.0   69.30  640 1382 1416 1466  480 770 776 788 -hsync -vsync (47.3 kHz)
[   951.082] (II) fglrx(0): EDID for output DFP1
[   951.082] (II) fglrx(0): EDID for output CRT1
[   951.082] (II) fglrx(0): Output LVDS connected
[   951.082] (II) fglrx(0): Output DFP1 disconnected
[   951.082] (II) fglrx(0): Output CRT1 disconnected
[   951.082] (II) fglrx(0): Using exact sizes for initial modes
[   951.082] (II) fglrx(0): Output LVDS using initial mode 1366x768
[   951.082] (II) fglrx(0): Display dimensions: (350, 190) mm
[   951.082] (II) fglrx(0): DPI set to (99, 102)
[   951.083] (II) fglrx(0): Eyefinity capable adapter detected.
[   951.083] (II) fglrx(0): Adapter AMD Radeon HD 7600M Series has 6 configurable heads and 0 displays connected.
[   951.083] (==) fglrx(0):  PseudoColor visuals disabled
[   951.083] (II) Loading sub module "ramdac"
[   951.083] (II) LoadModule: "ramdac"
[   951.083] (II) Module "ramdac" already built-in
[   951.083] (==) fglrx(0): NoDRI = NO
[   951.083] (==) fglrx(0): Capabilities: 0x00000000
[   951.083] (==) fglrx(0): CapabilitiesEx: 0x00000000
[   951.083] (==) fglrx(0): OpenGL ClientDriverName: "fglrx_dri.so"
[   951.083] (==) fglrx(0): UseFastTLS=0
[   951.083] (II) fglrx(0): TearFreeDesktop is not supported on PowerXpress systems currently.
[   951.083] (--) Depth 24 pixmap format is 32 bpp
[   951.083] (II) Loading extension ATIFGLRXDRI
[   951.083] (II) fglrx(0): doing swlDriScreenInit
[   951.084] (II) fglrx(0): swlDriScreenInit for fglrx driver
[   951.084] ukiDynamicMajor: found major device number 251
[   951.084] ukiDynamicMajor: found major device number 251
[   951.084] ukiDynamicMajor: found major device number 251
[   951.084] ukiOpenByBusid: Searching for BusID PCI:1:0:0
[   951.084] ukiOpenDevice: node name is /dev/ati/card0
[   951.084] ukiOpenDevice: open result is 16, (OK)
[   951.084] ukiOpenByBusid: ukiOpenMinor returns 16
[   951.084] ukiOpenByBusid: ukiGetBusid reports PCI:0:1:0
[   951.084] ukiOpenDevice: node name is /dev/ati/card1
[   951.084] ukiOpenDevice: open result is 16, (OK)
[   951.084] ukiOpenByBusid: ukiOpenMinor returns 16
[   951.084] ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0
[   951.084] (II) fglrx(0): [uki] DRM interface version 1.0
[   951.084] (II) fglrx(0): [uki] created "fglrx" driver at busid "PCI:1:0:0"
[   951.084] (II) fglrx(0): [uki] added 8192 byte SAREA at 0x2000
[   951.084] (II) fglrx(0): [uki] mapped SAREA 0x2000 to 0xb608e000
[   951.084] (II) fglrx(0): [uki] framebuffer handle = 0x3000
[   951.084] (II) fglrx(0): [uki] added 1 reserved context for kernel
[   951.084] (II) fglrx(0): swlDriScreenInit done
[   951.084] (II) fglrx(0): Kernel Module Version Information:
[   951.084] (II) fglrx(0):     Name: fglrx
[   951.084] (II) fglrx(0):     Version: 12.10.5
[   951.084] (II) fglrx(0):     Date: Mar 28 2013
[   951.084] (II) fglrx(0):     Desc: AMD FireGL DRM kernel module
[   951.084] (II) fglrx(0): Kernel Module version matches driver.
[   951.084] (II) fglrx(0): Kernel Module Build Time Information:
[   951.084] (II) fglrx(0):     Build-Kernel UTS_RELEASE:        3.2.0-4-686-pae
[   951.084] (II) fglrx(0):     Build-Kernel MODVERSIONS:        yes
[   951.084] (II) fglrx(0):     Build-Kernel __SMP__:            yes
[   951.084] (II) fglrx(0):     Build-Kernel PAGE_SIZE:          0x1000
[   951.084] (II) fglrx(0): [uki] register handle = 0x00004000
[   951.097] (II) fglrx(0): Static shadow buffer initialized.
[   951.109] (II) fglrx(0): DRI initialization successfull
[   951.127] (II) fglrx(0): FBADPhys: 0xf00000000 FBMappedSize: 0x01004000

和配置文件：

Section "ServerLayout"
	Identifier     "aticonfig Layout"
	Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:0:1:0"
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[0]-0"
	Device     "aticonfig-Device[0]-0"
	Monitor    "aticonfig-Monitor[0]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Answer 1

经过3个多小时的折腾，自己动手解决了这个问题：把ati的私有fglrx驱动移除掉，然后安装使用开源的radeon驱动，终于是见到了图形界面。具体的方法参考：http://my.oschina.net/shelllife/blog/201974

Answer 2

你说的是对的，我补充了日志信息和配置文件，我自己大概看了一下，不过不懂。

Answer 3

看错误日志，得知道是哪里出错才能搞清楚怎么修改呀。不是说xorg配置没修改就正确，也许因为某些驱动更新，就必须修改才能正常启动。