Changing Virtualbox's argument

[Naiji Ma]

Hi all,

I found a related post[1]. I will report back to the mailing list if
anything works out (or not). :)

[1]
https://superuser.com/questions/431167/achieving-a-1600-x-900-resolution-for-guest-os-ubuntu-under-host-os-windows


Best,
Naiji

2017-12-07 15:46 GMT+01:00 Naiji Ma <naijima.cn at ...9...>:

> Hi Alex,
>
> It's sad that your configuration doesn't work for me.
>
> The vbox config file is test.vbox. I add a node under <ExtraData>:
>
>>
>>     <ExtraData>
>>       <ExtraDataItem name="GUI/LastGuestSizeHint" value="720,400"/>
>>       <ExtraDataItem name="GUI/LastNormalWindowPosition"
>> value="513,100,720,422"/>
>>       <ExtraDataItem name="CustomVideoMode1" value="1920x1440x16"/>
>>     </ExtraData>
>
>
> And then I add the kernel parameter vga=864 via boot menu. While testing
> the resolution was resized back to 1024x768, which is the default value in
> the original test.vbox:
>
> <VideoCapture enabled="false" screens="18446744073709551615"
>> horzRes="1024" vertRes="768" rate="512" fps="25"/>
>
>
> And I update the above line to:
>
> <VideoCapture enabled="false" screens="18446744073709551615"
>> horzRes="1920" vertRes="1440" rate="512" fps="25"/>
>
>
> Still it doesn't work out. The log looks like below[stripped]:
>
> [init -> vbox1] Error: fcntl(): command 2 not supported
>> [init -> vbox1] Log created: 2017-12-07T15:39:00.000000000Z
>> [init -> vbox1] main     Executable: /virtualbox
>> [init -> vbox1] Error: SystemPropertiesWrap : Cannot determine default
>> Guest Additions ISO location. Most likely they are not available
>> [init -> vbox1] i_saveSettings skipped
>> [init -> fb_drv] Found: VESA BIOS version 3.0
>> [init -> fb_drv] OEM: Intel(R) Sandybridge/Ivybridge Graphics Chipset
>> Accelerated VGA BIOS
>> [init -> fb_drv] Found: physical frame buffer at 0xe0000000 size: 67043328
>> [init -> fb_drv] fb mapped to 0xc000000
>> [init -> fb_drv] using video mode: 1920x1440 at ...64...
>> [init -> vbox1] Using VMX virtualization extension.
>> [init -> vbox1] Warning: _fpathconf: _fpathconf not implemented
>> [init -> vbox1] Warning: statfs provides bogus values for '//test.iso'
>> (probably a shared folder)
>> [init -> vbox1] Warning: fcntl(): command 4 args 4 not supported -
>> terminal
>> [init -> vbox1] Warning: _sigaction: _sigaction not implemented
>> [init -> vbox1] Error: fireRuntimeErrorEvent : 0 DrvHostSerialFail Ioctl
>> failed for serial host device '/dev/terminal' (VERR_NOT_SUPPORTED). The
>> device will not work properly
>> [init -> vbox1] fb resize : [0] 1920x1440 -> 640x480
>> [init -> vbox1] fb resize : [0] 640x480 -> 720x400
>> [init -> vbox1] fb resize : [0] 720x400 -> 1920x1440   #1
>> [init -> vbox1] fb resize : [0] 1920x1440 -> 1024x768
>
>
> At the very beginning vbox1 found the resolution provided by fb_drv and
> then resized the screen to 640x480. At #1 it looks like vbox1 found the
> configuration change and resized the screen to 1920x1440. And finally the
> screen was resized back to 1024x768.
>
> I would say the resolution 1024x768 is somehow hardcoded into vbox1. Any
> advice?
>
>
> Best,
> Naiji
>
>
> 2017-12-05 16:53 GMT+01:00 Alexander Senier <alex at ...331...>:
>
>> Hi Naiji,
>>
>> I accomplished this by adding a custom VESA mode to the VirtualBox
>> configuration. Add an <ExtraDataItem> to the <ExtraData> node in
>> the config, e.g.
>>
>>     <ExtraData>
>>       <ExtraDataItem name="CustomVideoMode1" value="1920x1440x32"/>
>>       ...
>>     </ExtraData>
>>
>> Additionally, you may need to add a kernel parameter to select the
>> respective VGA mode:
>>
>>  vga=864
>>
>> I guess installing the guest additions is another option, but the above
>> configuration works in setups where this is not available.
>>
>> Cheers,
>> Alex
>>
>> On 05.12.2017 15:51, Naiji Ma wrote:
>> > Hi all,
>> >
>> > I am trying out Tinycore Linux in Virtualbox upon NOVA. Here is the
>> > virtualbox.run[1] I used. It's almost the original one. And here is the
>> > debug output[2] I got from serial port. From the debug output I see
>> > fb_drv detects the correct resolution of my monitor, but vbox resized it
>> > for some unknown reasons. The graphic output only occupies half of the
>> > window. I would like to force vbox to use the resoultion 1920x1440.
>> > Could someone give me a example about how to adjust vbox's configuration
>> > in virtualbox.run?
>> >
>> >
>> > [1] https://pastebin.com/GpQ56nX4
>> > [2] https://pastebin.com/uKebQW2n
>> >
>> >
>> > Best,
>> > Naiji
>> >
>> >
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>>
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>
>
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