Adding custom console modes to VirtualBox Linux Guest
OK, reading manuals sometime is very tedious. But after some great experiences i have to say that it always a practice that worth.
Following the little guide about setting up enriched graphics with GRUB 2, the right compendium is a little refresh about setting console modes on Linux.
To discover which console modes are supported by our Linux Box all we have to do is to issue the command hwinfo --framebuffer, this will present us a list of supported modes, in hexadecimal values, that we can further pass to the kernel via the parameter vga=0x317 (HEX) directly, or the correspondent decimal value , in this case vga=791. I remember that if you are using GRUB 2 bootloader this method has been deprecated (follow the previous post).
When using VirtualBox otherwise, we need non-standard console modes to fit our monitor, for example i suggest a resolution of 1280x800 with a monitor of 1680x1050, cause some 4:3 resolutions may be uncomfortable. To let the resolution of 1280x800 appear on your virtualized Linux ...