@Momo-0
Add the configuration as shown in the following figure, and then compile and update the kernel.

diff --git a/arch/arm64/configs/rk3588_cpcm5_notebook_v20_defconfig b/arch/arm64/configs/rk3588_cpcm5_notebook_v20_defconfig
index e6dba9677bd9..fe61fbaa04ef 100644
--- a/arch/arm64/configs/rk3588_cpcm5_notebook_v20_defconfig
+++ b/arch/arm64/configs/rk3588_cpcm5_notebook_v20_defconfig
@@ -309,6 +309,8 @@ CONFIG_BLK_DEV_DM=y
 CONFIG_DM_THIN_PROVISIONING=y
 CONFIG_NETDEVICES=y
 CONFIG_DUMMY=y
+CONFIG_WIREGUARD=m
+CONFIG_WIREGUARD_DEBUG=y
 CONFIG_MACVLAN=y
 CONFIG_IPVLAN=y
 CONFIG_VXLAN=y

@Momo-0
Please provide detailed error message.

@emtohere
使用TF卡的话不需要进入UMS模式，直接用读卡器通过etcher软件写就好了。不要用RKD工具。

@emtohere
机器默认刷机是使用etcher来刷。不是用RK官方工具，上电多次按开机按键，机器就会进入UMS模式，然后使用etcher软件加载固件，选择设备刷机即可。

@emtohere 你是使用的EMMC还是TF卡？能否提供开机日志信息。

@zehui
The image package we released has already installed the GPU driver by default. Regarding the issue of video playback lag, it has nothing to do with the GPU driver, mainly the VPU. Our image has integrated ffmpeg hardware decoding driver, which can support local video hardware decoding. If it is a network video, due to the system's default browser using snap mode, the hardware decoder cannot be called and can only be decoded through CPU software, resulting in lower smoothness and power consumption.

@emtohere
4b的机器按照这个文档操作即可。
https://wiki.cool-pi.com/en/home/quick_start

@Momo-0
Using the kernel at the following address, after compilation, headers. tar. gz will be generated, and then decompressed to the/usr directory.
https://github.com/coolpi-george/coolpi-kernel

@enok71
I don't have a direct understanding of what happened to this computer, why does it seem to have so many impurities inside.
If you need any information, please send an email to george@cool-pi.com

Introduction

The TM-CP1B is a compact industrial DTU modem for data acquisition, Modbus Gateway, and communication applications. It comes with 1 x RS485 、 1 x RS232 serial ports and 1x 10/100 Mbps Ethernet port, as well as a built-in socket to support 4G LTE、WIFI and LoRa cellular modules.

Brief introduction

• Cortex A7 + MCU + NPU 0.5 TOPS，1.6 GHz CPU
• 256MB RAM + 8GB eMMC, supports Micro SD expansion
• Ubuntu 24.04 server and Cockpit management software
• Isolate RS232 / RS485 serial port, Vrms>3.5KV
• 10M/100M adaptive Ethernet
• Built in high reliability security chip (ATSHA204A)
• Built in Mini-PCIe slot for 4G cellular module (Optional)
• Built in LoRa (410~525MHz, 850~931MHz, 126mW) (Optional)
• Built in wireless network WIFI/BT module (Optional)
• Built in RTC clock circuit
• 35mm DIN-Rail and wall mount Supported
• 9--36V wide voltage supply
• 94mm×70mm×33mm (L×W×H)
• -40°C to +85°C Operating Temperature

Interface

Specifications

Dimensions

@reukiodo
Hardware versions after V20 can support TYPEC PD charging, but it can only be used when turned on, and only supports adapter charging when turned off.

@berkaroad
Thank you very much

@traceback
从log信息看固件的分区有问题导致，先把SD卡格式化一下，然后重新制作启动盘。

@plumlis
Thank you very much for your recommendation, there are many very good applications.

• WCHAT
  https://cool-pi.com/topic/630/cm5-laptop-install-wchat?_=1727100045659

• QQ
  https://im.qq.com/linuxqq/download.html
  
  Select arm64 version, download the installation package in deb format, and then use the following command to install:

  sudo dpkg -i *.deb
  

• WPS
  The WPS official website has removed the installation package for ARM64 architecture, which can be downloaded and installed through Baidu Cloud or OneDrive.

• VSCODE
  https://code.visualstudio.com/Download#
  
  Select arm64 version, download the installation package in deb format, and then use the following command to install:

  sudo dpkg -i *.deb
  

• 向日葵
  https://sunlogin.oray.com/download/linux?type=ent
  
  Select arm64 version, download the installation package in deb format, and then use the following command to install:

  sudo dpkg -i *.deb
  

• KICAD
  Install directly using the following command :

  sudo dpkg -i kicad*
  

  

• Open the following address and download the file with the. flatpak suffix.
  https://github.com/web1n/wechat-universal-flatpak/releases
  Select the following aarch64 version
  

• Right click on the download directory and open the terminal, enter the following command to install flatpak

  sudo apt-get install flatpak

• Enter the following command to configure

  sudo flatpak remote-add --if-not-exists --system flathub https://flathub.org/repo/flathub.flatpakrepo

• Enter the following command to install WeChat

  flatpak install com.tencent.WeChat.flatpak

• Copy icon

  sudo cp /var/lib/flatpak/app/com.tencent.WeChat/current/active/export/share/        applications/com.tencent.WeChat.desktop /usr/share/applications/ 
  sudo cp -R /var/lib/flatpak/app/com.tencent.WeChat/current/active/export/share/icons/hicolor/* /usr/share/icons/hicolor/
  

• Preview

  

@mainbord
https://github.com/coolpi-george/coolpi-kernel

@jugg
暂时没有做其他版本的适配。

@Momo-0
If the firmware of Ubuntu is created on a USB drive and then inserted into a computer, can it boot up？

@Momo-0
Can the machine enter UMS mode? If it can enter UMS mode, you can first try formatting the UMS disk, and then use Ethcer to load the latest image and flash the machine.Refer to the following document.
https://cool-pi.com/topic/514/cool-pi-cm5-laptop-linux-quick-start-guide