几天前，我将系统升级到 18.04。升级后，系统显示uname -r
Linux 4.13.0-36-generic，但我预计它是 4.15。
更新后，引导加载程序仍然显示 ubuntu 17.10
因此我尝试按照以下步骤手动升级
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500_4.15.0-041500.201801282230_all.deb
sudo dpkg -i *.deb
即使重新启动后，版本仍显示为 4.13。
我尝试在 grub 模式中检查高级选项，没有任何迹象表明 4.13 已实际安装。
为什么我无法安装内核 4.15？
的输出是dpkg -l | grep linux
ii binutils-x86-64-linux-gnu 2.30-15ubuntu1 amd64 GNU binary utilities, for x86-64-linux-gnu target
ii console-setup-linux 1.178ubuntu2 all Linux specific part of console-setup
ii libselinux1:amd64 2.7-2build2 amd64 SELinux runtime shared libraries
ii libv4l-0:amd64 1.14.2-1 amd64 Collection of video4linux support libraries
ii libv4lconvert0:amd64 1.14.2-1 amd64 Video4linux frame format conversion library
ii linux-base 4.5ubuntu1 all Linux image base package
ii linux-firmware 1.173 all Firmware for Linux kernel drivers
ii linux-generic 4.15.0.20.23 amd64 Complete Generic Linux kernel and headers
ii linux-headers-4.15.0-041500 4.15.0-041500.201802011154 all Header files related to Linux kernel version 4.15.0
ii linux-headers-4.15.0-20 4.15.0-20.21 all Header files related to Linux kernel version 4.15.0
ii linux-headers-4.15.0-20-generic 4.15.0-20.21 amd64 Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii linux-headers-4.15.7-041507 4.15.7-041507.201802280530 all Header files related to Linux kernel version 4.15.7
ii linux-headers-generic 4.15.0.20.23 amd64 Generic Linux kernel headers
rc linux-image-4.10.0-28-generic 4.10.0-28.32~16.04.2 amd64 Linux kernel image for version 4.10.0 on 64 bit x86 SMP
rc linux-image-4.10.0-42-generic 4.10.0-42.46~16.04.1 amd64 Linux kernel image for version 4.10.0 on 64 bit x86 SMP
rc linux-image-4.13.0-26-generic 4.13.0-26.29~16.04.2 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
rc linux-image-4.13.0-32-generic 4.13.0-32.35 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
ii linux-image-4.13.0-36-generic 4.13.0-36.40 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
rc linux-image-4.13.0-37-generic 4.13.0-37.42 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
rc linux-image-4.13.0-38-generic 4.13.0-38.43 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
rc linux-image-4.13.0-39-generic 4.13.0-39.44 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
rc linux-image-4.13.0-41-generic 4.13.0-41.46 amd64 Linux kernel image for version 4.13.0 on 64 bit x86 SMP
ii linux-image-4.15.0-20-generic 4.15.0-20.21 amd64 Signed kernel image generic
rc linux-image-extra-4.10.0-28-generic 4.10.0-28.32~16.04.2 amd64 Linux kernel extra modules for version 4.10.0 on 64 bit x86 SMP
rc linux-image-extra-4.10.0-42-generic 4.10.0-42.46~16.04.1 amd64 Linux kernel extra modules for version 4.10.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-26-generic 4.13.0-26.29~16.04.2 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-32-generic 4.13.0-32.35 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
ii linux-image-extra-4.13.0-36-generic 4.13.0-36.40 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-37-generic 4.13.0-37.42 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-38-generic 4.13.0-38.43 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-39-generic 4.13.0-39.44 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
rc linux-image-extra-4.13.0-41-generic 4.13.0-41.46 amd64 Linux kernel extra modules for version 4.13.0 on 64 bit x86 SMP
ii linux-image-generic 4.15.0.20.23 amd64 Generic Linux kernel image
ii linux-libc-dev:amd64 4.15.0-20.21 amd64 Linux Kernel Headers for development
ii linux-modules-4.15.0-20-generic 4.15.0-20.21 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP
ii linux-modules-extra-4.15.0-20-generic 4.15.0-20.21 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP
rc linux-signed-image-4.10.0-28-generic 4.10.0-28.32~16.04.2 amd64 Signed kernel image generic
rc linux-signed-image-4.10.0-42-generic 4.10.0-42.46~16.04.1 amd64 Signed kernel image generic
rc linux-signed-image-4.13.0-26-generic 4.13.0-26.29~16.04.2 amd64 Signed kernel image generic
rc linux-signed-image-4.13.0-32-generic 4.13.0-32.35 amd64 Signed kernel image generic
ii linux-sound-base 1.0.25+dfsg-0ubuntu5 all base package for ALSA and OSS sound systems
ii pptp-linux 1.9.0+ds-2 amd64 Point-to-Point Tunneling Protocol (PPTP) Client
ii syslinux 3:6.03+dfsg1-2 amd64 collection of bootloaders (DOS FAT and NTFS bootloader)
ii syslinux-common 3:6.03+dfsg1-2 all collection of bootloaders (common)
ii syslinux-legacy 2:3.63+dfsg-2ubuntu9 amd64 Bootloader for Linux/i386 using MS-DOS floppies
ii util-linux 2.31.1-0.4ubuntu3 amd64 miscellaneous system utilities