我收到以下错误：
xrandr：无法获取输出默认的伽马大小屏幕0：最小640 x 480，当前1024 x 768，最大1024 x 768默认连接1024x768+0+0 0mm x 0mm 1024x768 61.0* 800x600
61.0 640x480 60.0
当我尝试将来宾操作系统分辨率提高到 时1290X1080，同时尝试执行上述步骤这里。在此之前，我可以通过上述步骤更改分辨率，但是在更新到 后CENTOS 6.5 to 6.6，我遇到了此错误。很多人都遇到同样的问题，但没有解决方案，我无法解决我的问题。
我当前的系统配置：
GUEST OS : CENTOIS 6.6
HOST OS : WIndows 7 enterprise
Display Adapter : Intel HD
VirtualBox : 4.6.3
VBoxGuestaddition is also succesfully installed and up and running
CENTOS 的结果，当我执行lspci -vnn
[admin@localhost ~]$ lspci -vnn
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma] [8086:1237] (rev 02)
Flags: fast devsel
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]
Flags: bus master, medium devsel, latency 0
00:01.1 IDE interface [0101]: Intel Corporation 82371AB/EB/MB PIIX4 IDE [8086:7111] (rev 01) (prog-if 8a [Master SecP PriP])
Flags: bus master, fast devsel, latency 64
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable)
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable)
I/O ports at d000 [size=16]
Kernel driver in use: ata_piix
Kernel modules: ata_generic, pata_acpi, ata_piix
00:02.0 VGA compatible controller [0300]: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef] (prog-if 00 [VGA controller])
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at e0000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at <unassigned> [disabled]
Kernel modules: vboxvideo
00:03.0 Ethernet controller [0200]: Intel Corporation 82540EM Gigabit Ethernet Controller [8086:100e] (rev 02)
Subsystem: Intel Corporation PRO/1000 MT Desktop Adapter [8086:001e]
Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 19
Memory at f0000000 (32-bit, non-prefetchable) [size=128K]
I/O ports at d010 [size=8]
Capabilities: <access denied>
Kernel driver in use: e1000
Kernel modules: e1000
00:04.0 System peripheral [0880]: InnoTek Systemberatung GmbH VirtualBox Guest Service [80ee:cafe]
Flags: bus master, fast devsel, latency 0, IRQ 20
I/O ports at d020 [size=32]
Memory at f0400000 (32-bit, non-prefetchable) [size=4M]
Memory at f0800000 (32-bit, prefetchable) [size=16K]
Kernel driver in use: vboxguest
Kernel modules: vboxguest
00:05.0 Multimedia audio controller [0401]: Intel Corporation 82801AA AC'97 Audio Controller [8086:2415] (rev 01)
Subsystem: Intel Corporation Device [8086:0000]
Flags: bus master, medium devsel, latency 64, IRQ 21
I/O ports at d100 [size=256]
I/O ports at d200 [size=64]
Kernel driver in use: Intel ICH
Kernel modules: snd-intel8x0
00:06.0 USB controller [0c03]: Apple Inc. KeyLargo/Intrepid USB [106b:003f] (prog-if 10 [OHCI])
Flags: bus master, fast devsel, latency 64, IRQ 22
Memory at f0804000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci_hcd
00:07.0 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 08)
Flags: bus master, medium devsel, latency 0, IRQ 9
Kernel modules: i2c-piix4
00:08.0 Ethernet controller [0200]: Intel Corporation 82540EM Gigabit Ethernet Controller [8086:100e] (rev 02)
Subsystem: Intel Corporation PRO/1000 MT Desktop Adapter [8086:001e]
Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
Memory at f0820000 (32-bit, non-prefetchable) [size=128K]
I/O ports at d240 [size=8]
Capabilities: <access denied>
Kernel driver in use
这个问题有什么解决办法吗？
编辑2：
xorg.conf我可以通过编辑（创建）文件/etc/X11/（我在下面共享的文件代码）来在某种程度上解决这个问题
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
HorizSync 28.0 - 70.0
VertRefresh 56.0 - 75.0
EndSection
Section "Device"
Identifier "VMware SVGA"
Driver "vesa"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1920x1080_60.00"
EndSubSection
EndSection
现在问题是什么？
实际上，在创建 xorg.conf 文件后，我可以获得更多分辨率，但不是那个（1920*1080） 解决 。
