Comment # 1 on bug 923458 from Lars M�ller

/etc/sysconfig/bootloader defines:

LOADER_TYPE="grub"
DEFAULT_APPEND="resume=/dev/vda1 splash=silent quiet  showopts"
DEFAULT_VGA="0x317"
FAILSAFE_APPEND="apm=off noresume edd=off powersaved=off nohz=off highres=off
processor.max_cstate=1 nomodeset x11failsafe"
FAILSAFE_VGA="0x317"
XEN_KERNEL_APPEND="resume=/dev/vda1 splash=silent quiet  showopts"
XEN_APPEND=""
XEN_VGA="0x317"
CYCLE_DETECTION="no"
CYCLE_NEXT_ENTRY="1"
LOADER_LOCATION=""

This is a continues updated openSUSE system.