efibootmgr: EFI variables are not supported on this system.

efivar: error listing variables: Function not implemented

$ grep -i efi /boot/config-3.16.0-4-amd64
# неинтересное убрал
CONFIG_EFI_PARTITION=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_EFI_MIXED=y
CONFIG_FB_EFI=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# EFI (Extensible Firmware Interface) Support
CONFIG_EFI_VARS=m
CONFIG_EFI_VARS_PSTORE=m
# CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE is not set
CONFIG_EFI_RUNTIME_MAP=y
CONFIG_UEFI_CPER=y
CONFIG_EFIVAR_FS=m
CONFIG_EARLY_PRINTK_EFI=y

CONFIG_EFI_VARS=m/y
CONFIG_EFI_VARS_PSTORE=m/y
CONFIG_EFIVAR_FS=m/y

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
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 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$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod lvm
insmod ext2
set root='lvm/gentoo-lvolroot'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint='lvm/gentoo-lvolroot'  eb078242-943e-4166-bff5-c7d281907790
else
  search --no-floppy --fs-uuid --set=root eb078242-943e-4166-bff5-c7d281907790
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=ru_RU
  insmod gettext
fi
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Gentoo GNU/Linux' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-eb078242-943e-4166-bff5-c7d281907790' {
	load_video
	if [ "x$grub_platform" = xefi ]; then
		set gfxpayload=keep
	fi
	insmod gzio
	insmod part_gpt
	insmod fat
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  4678-7D7A
	else
	  search --no-floppy --fs-uuid --set=root 4678-7D7A
	fi
	echo	'Загружается Linux 4.4.26-gentoo …'
	linux	/vmlinuz-4.4.26-gentoo root=/dev/mapper/gentoo-lvolroot ro  dolvm intel_idle.max_cstate=1
	echo	'Загружается начальный виртуальный диск …'
	initrd	/initramfs-genkernel-x86_64-4.4.26-gentoo
}
submenu 'Дополнительные параметры для Gentoo GNU/Linux' $menuentry_id_option 'gnulinux-advanced-eb078242-943e-4166-bff5-c7d281907790' {
	menuentry 'Gentoo GNU/Linux, с Linux 4.4.26-gentoo' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.26-gentoo-advanced-eb078242-943e-4166-bff5-c7d281907790' {
		load_video
		if [ "x$grub_platform" = xefi ]; then
			set gfxpayload=keep
		fi
		insmod gzio
		insmod part_gpt
		insmod fat
		set root='hd0,gpt1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  4678-7D7A
		else
		  search --no-floppy --fs-uuid --set=root 4678-7D7A
		fi
		echo	'Загружается Linux 4.4.26-gentoo …'
		linux	/vmlinuz-4.4.26-gentoo root=/dev/mapper/gentoo-lvolroot ro  dolvm intel_idle.max_cstate=1
		echo	'Загружается начальный виртуальный диск …'
		initrd	/initramfs-genkernel-x86_64-4.4.26-gentoo
	}
	menuentry 'Gentoo GNU/Linux, с Linux 4.4.26-gentoo (режим восстановления)' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.26-gentoo-recovery-eb078242-943e-4166-bff5-c7d281907790' {
		load_video
		if [ "x$grub_platform" = xefi ]; then
			set gfxpayload=keep
		fi
		insmod gzio
		insmod part_gpt
		insmod fat
		set root='hd0,gpt1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  4678-7D7A
		else
		  search --no-floppy --fs-uuid --set=root 4678-7D7A
		fi
		echo	'Загружается Linux 4.4.26-gentoo …'
		linux	/vmlinuz-4.4.26-gentoo root=/dev/mapper/gentoo-lvolroot ro single 
		echo	'Загружается начальный виртуальный диск …'
		initrd	/initramfs-genkernel-x86_64-4.4.26-gentoo
	}
}

### 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 ###