@jugg 这个是音频CODEC报错。

@etrin sudo mkfs.ext4 /dev/mmcblk0

@etrin
You can try booting with a USB drive, formatting the EMMC, and burning the image again.

@jugg 默认boot_merger这个二进制是x86架构的，需要更换为aarch64架构。你可以先再X86上面编译。或者使用下面的文件：
uboot.rar

@jugg
配置完以后要保存然后复制到对应的defconfig文件上。

make ARCH=arm64 menuconfig
make ARCH=arm64 savedefconfig
cp defconfig  ./arch/arm64/configs/rk3588_cpcm5_evb_defconfig
./build-kernel.sh cm5-evb-v11

@jugg
对比一下两个机器的config配置。

@etrin
Please note that the updated USB port is the USB 3.0 interface located on the upper layer near the power connector.

@jugg
最新的uboot就可以支持，你可以同步代码自己编译更新。

@jugg
这个需要有驱动支持才可以，移远我记得有个软件移植手册有说明，明天上传上来。

@george
The following figure shows the location of the debug serial port, with a serial port level of 3.3V and a baud rate of 115200

@etrin
Can the machine enter UMS mode normally? If it can enter UMS mode, you can try formatting the UMS disk using Windows tools and then burning the Ubuntu system again. Generally, if the system can be burned normally, it indicates that there is no hardware problem.

@jugg
确认USB接口为上层的USB3.0接口？

@anernest
The currently debugged LCD models are shown in the attachment. The github code has been supported by default. The replacement steps are as follows:

1. Replace the LCD screen with a touchscreen model
2. Replace the ribbon cable
3. It is necessary to add a touch screen level conversion board
   B8 NB Product Spec-NV140FHM-T07-2021.03.03(2).pdf

@enok71
George ppa provides ffmpeg source code and its patches, and can continue to develop on this code. We hope to support more formats. Especially in the coding part.

@enok71
The hardware acceleration software package currently defaults to using George PPA. We are currently researching a new branch and will release the results as soon as possible.

@enok71
Due to copyright issues with ffmpeg, only limited decoding support has been provided for ffmpeg Rockchip.

@jugg 在浏览器测试是否可以放大缩小！用chromium。

@阿里
这个应该是和显示框架有关，可以在驱动加打印看看。

@jugg
摄像头的问题会尽快确认回复。谢谢支持。

@银河铁道
修改DTS配置，然后把编译生成的dtb文件拷贝到boot分区重启即可。