我最近重新安裝了 Ubuntu 14.04，但我無法再透過頂部面板或命令列關閉電腦。
我嘗試了網路上建議的許多解決方案，例如在/etc/default/grub以下行中更新
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
我嘗試過使用、、quiet splash acpi=force甚至使用。quiet splash acpi=offquiet splash reboot=biosGRUB_CMDLINE_LINUX_DEFAULT=""
我的電腦上沒有cairo-dock安裝，我沒有使用專有驅動程序，而是使用 Xorg nouveau 驅動程式。
退出電腦的唯一解決方案是按電源按鈕。
這是我實際的 grub 設定檔：
# 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"
還有其他想法嗎？謝謝！ :)