Bom, como o galactus crio esse topico para as duvidas relativas ao grub serem postadas aqui, la vai a minha.
Eu to com o seguinte problema:
O boot do grub esta como se fosse 1024x768 porem, devido o fato do meu monitor ser antigo suporta até 800x600.
Eu consegui com a ajuda do membroArsolto resolver parte do problema, o boot no shutdown esta perfeito, porem ao reiniciar o boot quando esta ligando esta com 1024x768 e fica desfocado.
/etc/usplash.conf
# Usplash configuration file
xres=800
yres=600
/boot/grub/menu.lst
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not change this entry to 'saved' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
K.O