我最近升级到 OpenSUSE 13.2，一切似乎都工作正常。最近几天我注意到，当我关闭笔记本电脑时，它不会休眠。我尝试进入 Gnome Tweak 并更改休眠的电源设置，但没有任何可更改的内容（它只是空白）。要么写pm-hibernate，要么pm-suspend什么也不做。
有谁知道这种行为不当的原因是什么以及该问题的可能解决方案吗？这曾经在 13.1 中运行，但在这款特定的戴尔笔记本电脑上的 13.2 中不起作用。
这是我的/etc/default/grub文件：
# Modified by YaST2. Last modification on Thu Jan 1 20:28:06 EET 2015
# THIS FILE WILL BE PARTIALLY OVERWRITTEN by perl-Bootloader
# For the new kernel it try to figure out old parameters. In case we are not able to recognize it (e.g. change of flavor or strange install order ) it it use as fallback installation parameters from /etc/sysconfig/bootloader
# If you change this file, run 'grub2-mkconfig -o /boot/grub2/grub.cfg' afterwards to update
# /boot/grub2/grub.cfg.
GRUB_DISTRIBUTOR=openSUSE
GRUB_DEFAULT=saved
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=5
GRUB_CMDLINE_LINUX_DEFAULT=" resume=/dev/sda1 splash=silent quiet showopts"
# kernel command line options for failsafe mode
GRUB_CMDLINE_LINUX_RECOVERY="showopts apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe"
GRUB_CMDLINE_LINUX=""
# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM=0x01234567,0xfefefefe,0x89abcdef,0xefefefef
# Uncomment to disable graphical terminal (grub-pc only)
GRUB_TERMINAL=gfxterm
# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
GRUB_GFXMODE=auto
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_LINUX_RECOVERY=true
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
# Skip 30_os-prober if you experienced very slow in probing them
# WARNING foregin OS menu entries will be lost if set true here
GRUB_DISABLE_OS_PROBER=false
GRUB_THEME=/boot/grub2/themes/openSUSE/theme.txt
GRUB_BACKGROUND=/boot/grub2/themes/openSUSE/background.png
SUSE_BTRFS_SNAPSHOT_BOOTING=true
GRUB_ENABLE_CRYPTODISK=n
我尝试运行grub2-mkconfig -o /boot/grub2/grub.cfg，mkinitrd然后重新启动，但这似乎不是解决方案。