我正在尝试在 Raspberry Pi 上的 Ubuntu 20.04 上安装实时补丁。不幸的是，我的尝试都没有成功。每次尝试安装编译的 deb 包后，都会出现附加的错误消息。如果您需要更多信息，请告诉我。
下载并应用补丁后，我复制旧的配置文件并运行以下命令：
cp /boot/config-5.X.X.X-raspi .config
make oldconfig # select PREEMPT-RT
make -j8 deb-pkg LOCALVERSION=-raspi KDEB_PKGVERSION=$(make kernelversion)-1
安装编译好的.deb文件时出现错误信息：
ubuntu@ubuntu:~/kernel_main$ sudo dpkg -i linux-headers-5.4.193-rt74-raspi_5.4.193-rt74-raspi-1_arm64.deb linux-image-5.4.193-rt74-raspi-dbg_5.4.193-rt74-raspi-1_arm64.deb linux-libc-dev_5.4.193-rt74-raspi-1_arm64.deb linux-image-5.4.193-rt74-raspi_5.4.193-rt74-raspi-1_arm64.deb (Reading database ...
126243 files and directories currently installed.)
Preparing to unpack linux-headers-5.4.193-rt74-raspi_5.4.193-rt74-raspi-1_arm64.deb ...
Unpacking linux-headers-5.4.193-rt74-raspi (5.4.193-rt74-raspi-1) over (5.4.193-rt74-raspi-1) ...
Preparing to unpack linux-image-5.4.193-rt74-raspi-dbg_5.4.193-rt74-raspi-1_arm64.deb ...
Unpacking linux-image-5.4.193-rt74-raspi-dbg (5.4.193-rt74-raspi-1) over (5.4.193-rt74-raspi-1) ...
Preparing to unpack linux-libc-dev_5.4.193-rt74-raspi-1_arm64.deb ...
Unpacking linux-libc-dev:arm64 (5.4.193-rt74-raspi-1) over (5.4.193-rt74-raspi-1) ...
Preparing to unpack linux-image-5.4.193-rt74-raspi_5.4.193-rt74-raspi-1_arm64.deb ...
Unpacking linux-image-5.4.193-rt74-raspi (5.4.193-rt74-raspi-1) over (5.4.193-rt74-raspi-1) ...
Setting up linux-headers-5.4.193-rt74-raspi (5.4.193-rt74-raspi-1) ...
Setting up linux-image-5.4.193-rt74-raspi-dbg (5.4.193-rt74-raspi-1) ...
Setting up linux-libc-dev:arm64 (5.4.193-rt74-raspi-1) ...
Setting up linux-image-5.4.193-rt74-raspi (5.4.193-rt74-raspi-1) ...
update-initramfs: Generating /boot/initrd.img-5.4.193-rt74-raspi
Using DTB: bcm2711-rpi-4-b.dtb
Couldn't find DTB bcm2711-rpi-4-b.dtb on the following paths:
/etc/flash-kernel/dtbs /usr/lib/linux-image-5.4.193-rt74-raspi /lib/firmware/5.4.193-rt74-raspi/device-tree/
Installing into /boot/dtbs/5.4.193-rt74-raspi/./bcm2711-rpi-4-b.dtb
cp: cannot stat '': No such file or directory
run-parts: /etc/initramfs/post-update.d//flash-kernel exited with return code 1
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
Using DTB: bcm2711-rpi-4-b.dtb
Couldn't find DTB bcm2711-rpi-4-b.dtb on the following paths:
/etc/flash-kernel/dtbs /usr/lib/linux-image-5.4.193-rt74-raspi /lib/firmware/5.4.193-rt74-raspi/device-tree/
Installing into /boot/dtbs/5.4.193-rt74-raspi/./bcm2711-rpi-4-b.dtb
cp: cannot stat '': No such file or directory
run-parts: /etc/kernel/postinst.d/zz-flash-kernel exited with return code 1
dpkg: error processing package linux-image-5.4.193-rt74-raspi (--install):
installed linux-image-5.4.193-rt74-raspi package post-installation script subprocess returned error exit status 1
Errors were encountered while processing: linux-image-5.4.193-rt74-raspi