［求助］ubuntu更新后,grub中并无新内核启动项

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="${saved_entry}"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=zh_CN
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=hidden
set timeout=0
# Fallback hidden-timeout code in case the timeout_style feature is
# unavailable.
elif sleep --interruptible 0 ; then
set timeout=0
fi
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30,0; then
clear
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="${1}"
if [ "${1}" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
if [ "${recordfail}" != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
linux/boot/vmlinuz-4.2.0-27-generic root=UUID=3e7019ee-0795-43bf-9be5-0101d2659fb6 ro quiet splash $vt_handoff
initrd/boot/initrd.img-4.2.0-27-generic
}
submenu 'Ubuntu 高级选项' $menuentry_id_option 'gnulinux-advanced-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
menuentry 'Ubuntu，Linux 4.2.0-27-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-27-generic-advanced-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
echo'载入 Linux 4.2.0-27-generic ...'
linux/boot/vmlinuz-4.2.0-27-generic root=UUID=3e7019ee-0795-43bf-9be5-0101d2659fb6 ro quiet splash $vt_handoff
echo'载入初始化内存盘...'
initrd/boot/initrd.img-4.2.0-27-generic
}
menuentry 'Ubuntu, with Linux 4.2.0-27-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-27-generic-recovery-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
recordfail
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
echo'载入 Linux 4.2.0-27-generic ...'
linux/boot/vmlinuz-4.2.0-27-generic root=UUID=3e7019ee-0795-43bf-9be5-0101d2659fb6 ro recovery nomodeset
echo'载入初始化内存盘...'
initrd/boot/initrd.img-4.2.0-27-generic
}
menuentry 'Ubuntu，Linux 3.10.101' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.10.101-advanced-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
echo'载入 Linux 3.10.101 ...'
linux/boot/vmlinuz-3.10.101 root=UUID=3e7019ee-0795-43bf-9be5-0101d2659fb6 ro quiet splash $vt_handoff
echo'载入初始化内存盘...'
initrd/boot/initrd.img-3.10.101
}
menuentry 'Ubuntu, with Linux 3.10.101 (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.10.101-recovery-3e7019ee-0795-43bf-9be5-0101d2659fb6' {
recordfail
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
echo'载入 Linux 3.10.101 ...'
linux/boot/vmlinuz-3.10.101 root=UUID=3e7019ee-0795-43bf-9be5-0101d2659fb6 ro recovery nomodeset
echo'载入初始化内存盘...'
initrd/boot/initrd.img-3.10.101
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry 'Memory test (memtest86+)' {
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
knetbsd/boot/memtest86+.elf
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 3e7019ee-0795-43bf-9be5-0101d2659fb6
else
search --no-floppy --fs-uuid --set=root 3e7019ee-0795-43bf-9be5-0101d2659fb6
fi
linux16/boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

grub文件应该如何修改？

之前用的update－grub改用update－grub2后变好了！！但是新的内核打开后是这样的：

之前用shift可以出现grub 现在又不行了QAQ

@Samiricoe