I've installed Debian Wheezy on VirtualBox 4.1.12 (running in Ubuntu 12.04) and have troubles setting the video mode. vga=xxx isn't possible anymore, instead, the video mode should be set using GRUB. In /etc/default/grub I set GRUB_GFXMODE=1024x768 and that works, but when I select to boot Debian, it switches back to text mode 80x25. Setting GRUB_GFXPAYLOAD_LINUX to keep or 1024x768 didn't help.
Any ideas how I could achieve my goal?
To get this to work for me, I followed the instructions in: https://askubuntu.com/a/18463
Become root user
su
Open /etc/default/grub.
Find GRUB_GFXMODE= ... and change it to:
GRUB_GFXMODE=800x600
GRUB_GFXPAYLOAD=800x600x32
Edit /etc/grub.d/00_header
Find if [ "x${GRUB_GFXMODE}" = "x" ] ; and change it to:
if [ "x${GRUB_GFXMODE}" = "x" ] ; then GRUB_GFXMODE=800x600 ; fi
if [ "x${GRUB_GFXPAYLOAD}" = "x" ] ; then GRUB_GFXPAYLOAD=800x600x32 ; fi
Find set gfxmode=${GRUB_GFXMODE} and change it to:
set gfxmode=${GRUB_GFXMODE}
set gfxpayload=${GRUB_GFXPAYLOAD}
Run:
update-grub2
I got this working today. I therefore do not know how stable the fix is - in terms of updates being applied to grub or the linux kernel. I hope someone else can clarify whether these settings files every get overwritten by upgrades.
GRUB_GFXPAYLOAD in /etc/default/grub is being ignored by update-grub. In /etc/grub.d/00_header it is enough to add the line starting with if [ "x${GRUB_GFXPAYLOAD}" and also the line set gfxpayload=${GRUB_GFXPAYLOAD}.
Commented
Oct 11, 2013 at 18:40