我最近重新安装了 Ubuntu 14.04，但我无法再关闭计算机，无论是通过顶部面板还是通过命令行。
我尝试了网上建议的许多解决方案，比如在/etc/default/grub以下行中更新
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
我尝试过、、，quiet splash acpi=force甚至用。quiet splash acpi=offquiet splash reboot=biosGRUB_CMDLINE_LINUX_DEFAULT=""
我的电脑上没有cairo-dock安装它，我没有使用专有驱动程序而是使用 Xorg nouveau 驱动程序。
退出计算机的唯一解决方案是按下电源按钮。
这是我的实际 grub 配置文件：
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'
GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=3
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
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=console
# 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=640x480
# 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_RECOVERY="true"
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
还有其他想法吗？谢谢！:)