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@...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@...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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