Fedora 18 VirtualBox Resolution Guest Additions

fedoraresolutionvirtualbox

I've installed Fedora 18 64-bit guest into a VirtualBox VM running on a Max OS X host. Previously I've installed Fedora 17 and after installing guest additions from the RPM Fusion repo full screen mode worked by resizing to the same resolution as the host machine.

However on Fedora 18 after installing guest additions and running in full screen mode the guest runs at 1024×768. The host is running at 1366×768. This results in two large black bars on the left and right of the guest when in full screen mode.

Is there a way to alleviate this? Perhaps to get Fedora to run a custom resolution?

Edit The root of the problem was that GuestAdditions was failing to install. After trying to build it manually and using the version from RPM Fusion I was unable to solve this. I've downloaded Fedora 17 and the version of GuestAdditions from RPM Fusion works fine with it.

Best Answer

VirtualBox-guest from rpmfusion should work without problem , if You had any problem please report it on https://bugzilla.rpmfusion.org/enter_bug.cgi?product=Fedora component VirtualBox

yum install VirtualBox-guest kmod-VirtualBox

if you install kmod-VirtualBox it will install pre compiled kernel kmods .

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For documentation, Fedora has a pretty good for basics: http://docs.fedoraproject.org/en-US/index.html

Now regarding your problem I had the same issue and to avoid it I've performed the following as root:

[root@testmachine ~]# xrandr
Screen 0: minimum 64 x 64, current 1600 x 1200, maximum 32000 x 32000
VBOX0 connected 1600x1200+0+0 0mm x 0mm
   1600x1200      60.0*+
   1440x1050      60.0  
   1280x960       60.0  
   1024x768       60.0  
   800x600        60.0  
   640x480        60.0

This will provide all the available modes. To add a new one perform the following:

    [root@testmachine ~]# cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync

Let's create a new mode for XRAND and associate it to the screen.

xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
xrandr --addmode VBOX0 1920x1080_60.00

And now it's time to activate the output

xrandr --output VBOX0 --mode 1920x1080_60.00

the VBOX0 value you get from the first xrandr command to see your display id. Change the cvt value and update the commands accordingly to match your cvt output.

Best Answer

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