If anyone happens to use Ubuntu latest as guest machine on windows 7 host machine and find the resolution to be jumbled up on boot. then this might be helpful
host : windows 7
guest : ubuntu 12.04
issue: on addition of “virtual box guest additions” the screen resolution is messed up and messy screen visible on the boot. login into the tty shell at ALT+CTRL+1 also not working fast enough and not able to login due to wrong characters being taken
get to your virtual box installation path, mine was at “C:\Program Files\Oracle\VirtualBox>”
then execute : “VBoxManage setextradata global GUI/MaxGuestResolution any”
C:\Program Files\Oracle\VirtualBox>VBoxManage setextradata global GUI/MaxGuestResolution any
There seems to be a manual resolution limitation from the virtual box end.