【Ubuntu】Ubuntu 编译安装内核（1）

下载内核源码：​​https://www.kernel.org/​​

卸载内核

1. sudo rm -rf /lib/modules/5.8.5
sudo rm -rf /usr/src/linux-5.8.5
sudo rm -rf /boot/*5.8.5*
sudo rm -rf /var/lib/initramfs-tools/5.8.5

2. sudo update-grub

安装必要依赖

sudo apt-get install gcc make libncurses5-dev openssl libssl-dev
sudo apt-get install build-essential
sudo apt-get install pkg-config
sudo apt-get install libc6-dev
sudo apt-get install bison
sudo apt-get install flex
sudo apt-get install libelf-dev

编译安装

cd ~/Desktop/linux-x.xx.xx/
sudo cp /boot/config-x.xx.xx-generic .config # 前者是你本机中自带的，拷贝当前内核配置到当前目录下
sudo make menuconfig # Exit
sudo make -j2 # bzImage
sudo make modules_install # 安装模块sudo mv ~/Desktop/linux-x.xx.xx /usr/src/ # 前者是新内核
cd /usr/src/linux-x.xx.xx/
sudo make install # 安装内核
sudo mkinitramfs -o /boot/initrd.img-x.xx.xx
sudo update-initramfs -c -k x.xx.xx # 启用内核作为引导
sudo update-grub2 # 更新grub

重启

sudo shutdown -r now

查看内核版本

uname -a

后记

• 之前在虚拟机中安装的增强工具在重启后貌似无用。
• 如果开机没有启动项，那么就对​​/etc/default/grub​​​ 文件做出如下改动，然后​​sudo update-grub​​。

# 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_TIMEOUT_STYLE=hidden # here
GRUB_TIMEOUT=10 # here
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"