@顾真牛
内核目前是一套代码，两个编译参数区分

@Threadripper
你是用哪个镜像版本

@tonyone0902
https://www.cool-pi.com/topic/56/how-to-buy-coolpi-4b-board

适用于CM5

https://www.cool-pi.com/topic/247/cool-pi-4b-cm5-探索快速安装系统新方法?page=1

fixed adb connect with usb otg port.

version file name: coolpi-4b-android12-20230329.zip

@xingzhan2012 如需要，后续可以补上

@edwardzhou 提示在显示器输出进度，当然也可以修改console切换到串口输出

@edwardzhou 用U盘备份安装系统，不用考虑移除emmc

@jugg

coolpi@coolpi:~$ sudo apt install qtmultimedia5-dev 
[sudo] password for coolpi: 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following package was automatically installed and is no longer required:
  libllvm15
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  libblkid-dev libglib2.0-dev libglib2.0-dev-bin libmount-dev libpcre16-3
  libpcre2-dev libpcre2-posix3 libpcre3-dev libpcre32-3 libpcrecpp0v5
  libqt5multimedia5 libqt5multimediagsttools5 libqt5multimediaquick5
  libqt5multimediawidgets5 libselinux1-dev libsepol-dev uuid-dev
Suggested packages:
  libgirepository1.0-dev libglib2.0-doc
The following NEW packages will be installed:
  libblkid-dev libglib2.0-dev libglib2.0-dev-bin libmount-dev libpcre16-3
  libpcre2-dev libpcre2-posix3 libpcre3-dev libpcre32-3 libpcrecpp0v5
  libqt5multimedia5 libqt5multimediagsttools5 libqt5multimediaquick5
  libqt5multimediawidgets5 libselinux1-dev libsepol-dev qtmultimedia5-dev
  uuid-dev
0 upgraded, 18 newly installed, 0 to remove and 0 not upgraded.
Need to get 4799 kB of archives.
After this operation, 23.8 MB of additional disk space will be used.
Do you want to continue? [Y/n] 

coolpi@coolpi:~$ sudo apt install qtmultimedia5-dev 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following package was automatically installed and is no longer required:
  libllvm15
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  libblkid-dev libglib2.0-dev libglib2.0-dev-bin libmount-dev libpcre16-3
  libpcre2-dev libpcre2-posix3 libpcre3-dev libpcre32-3 libpcrecpp0v5
  libqt5multimedia5 libqt5multimediagsttools5 libqt5multimediaquick5
  libqt5multimediawidgets5 libselinux1-dev libsepol-dev uuid-dev
Suggested packages:
  libgirepository1.0-dev libglib2.0-doc
The following NEW packages will be installed:
  libblkid-dev libglib2.0-dev libglib2.0-dev-bin libmount-dev libpcre16-3
  libpcre2-dev libpcre2-posix3 libpcre3-dev libpcre32-3 libpcrecpp0v5
  libqt5multimedia5 libqt5multimediagsttools5 libqt5multimediaquick5
  libqt5multimediawidgets5 libselinux1-dev libsepol-dev qtmultimedia5-dev
  uuid-dev
0 upgraded, 18 newly installed, 0 to remove and 0 not upgraded.
Need to get 4799 kB of archives.
After this operation, 23.8 MB of additional disk space will be used.
Do you want to continue? [Y/n]

@xingzhan2012 said in Cool pi 4B & CM5 探索快速安装系统新方法:

@大法师 牛逼，也就是U盘里创建一个backpu文件夹，插在USB口上，开机自动备份到backup文件夹中。 U盘中创建一个install文件夹，开机自动将install中的系统刷入emmc中。Cool Pi 4B Linux System Backup.iso中的文件替换掉系统中的/boot/firmware 文件夹中的文件是吧。这些启动文件是ubuntu22.04系统的么？是和系统版本无关么？

安装备份操作，与rootfs系统无关，可以是任意制作的linux 根文件系统。这种方式适合开发者调试，可以是openwrt或buildroot或yocto等等

@xingzhan2012
备份还原操作，可以同一个U盘，把backup iso中的initrd.img拷贝到install iso 中，重命名为initrd-backup.img。

想加载哪个功能，直接修改extlinux.conf启动哪个文件即可。当然配套backup目录可以直接重命名为install，更直接了

@xingzhan2012
太自动化会引起误操作。确实有必要备份重新安装，也不差一次拷贝动作

@tonyone0902
vim /boot/firmware/config.txt 一样修改dtb文件名试下。你的机器是什么时间收到的，早期的loader不识别extlinux.conf

另外查看下 ls -l /sys/class/drm/

@xingzhan2012 像Windows一样自动安装、自动备份，一个U盘搞定，无需额外操作

@tonyone0902
系统终端输入dmesg > kernel.log

把kernel.log发上来看下。

@xingzhan2012
欢迎验证系统备份功能

假定手上有两个U盘，一个制作为系统初始化安装U盘A，另一个制作为系统备份U盘B。

当用户在系统中安装或修改各种配置操作后，如需要备份保存系统，那么请关机，插入备份U盘B，开机自动完成备份操作（备份文件在backup目录）。

当用户想恢复备份的系统到coolpi 4b板载的存储emmc，那么可以将备份U盘B中的backup目录内容拷贝到安装U盘A install目录（请注意先删除install目录文件），插入安装U盘A，开机自动完成系统安装操作。

@tonyone0902
5寸电容触摸屏切换操作参考，使用ubuntu 22.04 20230306版本

需要切换使用rk3588s-cp4-dsi.dtb文件

coolpi@coolpi:~/Desktop$ cat /boot/firmware/
Image                      cmdline.txt                extlinux/                  modules.tar.gz             rk3588s-cp4.dtb            
System Volume Information/ config.txt                 initrd.img                 rk3588s-cp4-dsi.dtb        vmlinuz                    
coolpi@coolpi:~/Desktop$ cat /boot/firmware/extlinux/extlinux.conf 
default Linux coolpi

label Linux coolpi
	kernel /Image
	initrd /initrd.img
	fdt    /rk3588s-cp4-dsi.dtb
	append root=LABEL=writable rw rootfstype=ext4 console=ttyS0,115200n81 quiet splash plymouth.ignore-serial-consoles vt.global_cursor_default=1 irqchip.gicv3_pseudo_nmi=0 net.ifnames=0
coolpi@coolpi:~/Desktop$

@xingzhan2012 我们调试了一款OV5647。摄像头型号比较多，调试周期较长，我们会再选一些通用型号匹配验证。谢谢

@xingzhan2012 好的，谢谢建议