scupt-tc real hardware: 0/3

[Paul Dufresne]

I am confused because the VGA framebuffer says that it's default 
configuration is 1024x768.

But when ran in QEMU I see: (for run/framebuffer)

[init -> fb_drv] Found PCI VGA at 00:01.0
[init -> fb_drv] fb mapped to 0x6000
[init -> fb_drv] Found: VESA BIOS version 3.0
[init -> fb_drv] OEM: SeaBIOS VBE(C) 2011
[init -> fb_drv] Found: physical frame buffer at 0xfd000000 size: 16777216
[init -> fb_drv] fb mapped to 0xb000000
[init -> fb_drv] using video mode: 2560x1600 at 16
[init -> test-framebuffer] framebuffer is 2560x1600 at RGB565

I know this is vesa driver speaking... but from where 2560x1600 is 
coming from?