can't get host resolution in centos 64 bit on virtual box 4.2.2

I have windows 7 64-bit machine and have virtual box 4.2.2.r.... installed. I have centOS with kernel 2.6.18-308.16.1.el5 and its x86_64. I have also installed vbox guest edition, it was successful and I am not able to get the native host resolution. It looks wierd when I do it full screen, I am unable to explain. I am attaching a screenshot. I have modified the xorg.conf to match my host resolution, but didn't seem to work

Code:

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Section "InputDevice"
  Identifier  "Keyboard[0]"
  Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
  Option      "Protocol" "Standard"
  Option      "CoreKeyboard"
EndSection

Section "InputDevice"
  Driver      "mouse"
  Identifier  "Mouse[1]"
  Option      "Buttons" "9"
  Option      "Device" "/dev/input/mice"
  Option      "Name" "VirtualBox Mouse Buttons"
  Option      "Protocol" "explorerps/2"
  Option      "Vendor" "Oracle Corporation"
  Option      "ZAxisMapping" "4 5"
  Option      "CorePointer"
EndSection

Section "InputDevice"
  Driver      "vboxmouse"
  Identifier  "Mouse[2]"
  Option      "Device" "/dev/vboxguest"
  Option      "Name" "VirtualBox Mouse"
  Option      "Vendor" "Oracle Corporation"
  Option      "SendCoreEvents"
EndSection

Section "ServerLayout"
  Identifier  "Layout[all]"
  InputDevice  "Keyboard[0]" "CoreKeyboard"
  InputDevice  "Mouse[1]" "CorePointer"
  InputDevice  "Mouse[2]" "SendCoreEvents"
  Option      "Clone" "off"
  Option      "Xinerama" "off"
  Screen      "Screen[0]"
EndSection
 
Section "Monitor"
  Identifier  "Monitor[0]"
  ModelName    "VirtualBox Virtual Output"
  VendorName  "Oracle Corporation"
EndSection
 
Section "Device"
  BoardName    "VirtualBox Graphics"
  Driver      "vboxvideo"
  Identifier  "Device[0]"
  VendorName  "Oracle Corporation"
EndSection
 
Section "Screen"
  SubSection "Display"
    Viewport    0 0
    Depth      24
  Modes      "1366x768"
  EndSubSection
  Device      "Device[0]"
  Identifier  "Screen[0]"
  Monitor      "Monitor[0]"
EndSection

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And the success message when I installed guest editions.

Quote:

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sh ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 4.2.2 Guest Additions for Linux..........
VirtualBox Guest Additions installer
Removing installed version 4.2.2 of VirtualBox Guest Additions...
Removing existing VirtualBox DKMS kernel modules [ OK ]
Removing existing VirtualBox non-DKMS kernel modules [ OK ]
Building the VirtualBox Guest Additions kernel modules
Building the main Guest Additions module [ OK ]
Building the shared folder support module [ OK ]
Not building the VirtualBox advanced graphics driver as this Linux version is
too old to use it.
Doing non-kernel setup of the Guest Additions [ OK ]
You should restart your guest to make sure the new modules are actually used

Installing the Window System drivers
Installing X.Org 7.1 modules [ OK ]
Setting up the Window System to use the Guest Additions [ OK ]
The following X.Org/XFree86 configuration files were originally generated by
the VirtualBox Guest Additions and were not modified:

/etc/X11/xorg.conf

You may need to restart the hal service and the Window System (or just restart
the guest system) to enable the Guest Additions.

Installing graphics libraries and desktop services componen[ OK ]

---

Can someone help me getting it fixed, i can't really work in 800x600 resolution

Did you also install the virtual box extensions? You need to download and install those so that some pseudo-hardware (such as USB 2.0 devices) work properly. I think it also affects video handling. I've never had any issues with it not working properly in full-screen (1920x1200 and 1920x1080) resolution on any of my systems, running Win7 as host, or RH6 as host and RH/CentOS 5 or 6 as guests. Do it all the time in both configurations. I am current running VBox 4.2.4 on RH6 and I think the same on Win7 (though it may be 4.1 - need to boot laptop to see).

It didn't work for me... I installed virtualbox extensions and restarted the host system, but still didn't work for me. Are there any other work arounds fto get this thing working. I really can't work in this small 800x600 resolutions.

Have you tried to use the display manager tool to change the resolution? What happens when you do the hardware full-screen switch (right-ctrl-F key combo)?

Its very weird. I cannot explain that, I cannot select applications, system on the top toobar, they are just placed randomly on the screen, and to select them I need to place the mouse cursor 20-30px left of where I see them.Attachment 4664

Attached screenshot, that is how it looks when I change it to full screen(right ctrl + F)

Ok. You installed CentOS 5.x - have you tried 6.x (current is 6.3)?

No, that is the virtual disk my company gave me to work on with the necessary application server installed..
Can I like upgrade through yum ? I haven't worked on centos, I have only used fedora and ubuntu. I feel centos is more like fedora but I am not sure..

Quote:

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Originally Posted by harishbayyavarapu

No, that is the virtual disk my company gave me to work on with the necessary application server installed..
Can I like upgrade through yum ? I haven't worked on centos, I have only used fedora and ubuntu. I feel centos is more like fedora but I am not sure..

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Time to contact your company's IT help desk. :-)