☰

無法開啟 grub 選單

tag-icon • tag-icon boot grub2 kernel shortcut-keys suspend
無法開啟 grub 選單

我在 ryzen 5500U 和整合 GPU 上運行 ubuntu 20.04。

即使我在啟動時已經按下Shift/按鈕，我也無法打開 grub 選單。Esc我想降級我的內核版本，因為掛起後無法登錄，它顯示無響應黑螢幕。

核心版本： 5.14.10-051410-generic

/etc/default/grub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=-1
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=0
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"

答案1

顯示 grub 選單可能很困難，但是嘗試在啟動時每半秒按下並釋放 escape。

以更長的啟動時間為代價，您可以編輯該GRUB_TIMEOUT值/etc/default/grub以添加幾秒鐘的等待時間。然後，Grub 將等待一段時間，然後啟動預設條目。在此期間，您可以按Esc或F4，或按住Shift以顯示選單。

您可以透過以下方法編輯 grub 配置。

相關內容