@Momo-0
After booting up, print a dmesg message and send it out. I think this should be a single machine issue. Normally, our machine does not have this problem.

@Momo-0
Configure according to the factory's configuration (both the file system and kernel are placed in EMMC, while nvme only serves as a data disk). Is there a problem with suspend?

@etrin Has the problem been solved now？

@Mz3D-0
Sorry, The typec port of cp4 machine only support power input and cannot support power output and dp output.
You can pay attention to CM5's laptop products,which come with a standard TYPEC interface and support ALT mode to output power and display port output simultaneously.
https://www.cool-pi.com/assets/uploads/files/1699189432516-主图英文版.png

@etrin
Do you have a USB to serial port tool? If you can provide a startup log, it will be more convenient for us to analyze and solve the problem. Based on the current description, the possibility of insufficient power supply is relatively high. It is recommended to replace the TYPEC adapter before testing.

@etrin
Please refer to the following document to configure the NPU environment for CM5 and test it.

https://www.cool-pi.com/topic/288/quickly-build-an-rknn-environment?_=1699186747376

@etrin
Is the phenomenon of constantly restarting after upgrading the image? Have you seen the startup logo image? If the power adapter is constantly restarted, it is highly likely to be a problem. It is recommended to replace it with an adapter that supports the PD/QC protocol for testing.

@ngavarta
In the early stage, there was a plan to use a copper tube heat sink as shown in the figure below for heat dissipation between the CM5 and the fan. Later, the machines shipped were changed to passive graphite copper sheet heat dissipation.
Copper tube radiator：

Graphene+copper sheet radiator：

Temperature test data:

@etrin
Provide the full name of the image.

@LinuxRk3588
rtlinux我记得内核有个补丁包，可以自己测试一下。我们暂时没有适配计划。

@LinuxRk3588
ubuntu直接安装ROS2就可以了。见如下文档：
https://forum.cool-pi.com/topic/71/ubuntu22-04一键安装ros2环境?_=1698911528085

@Momo-0
Is firmware stored in EMMC or NVME?

@LinuxRk3588
1.CM5-EVB的typec接口只有供电功能，没有USB和DP功能。
2.调试接口可以使用TTL或者网口，这个底板的原理图和PCB文件在wiki可以下载。图纸上有完整的信号定义。
3.SATA电源是标准的12V 5V设计，丝印上也有标注。
4.上层的USB3.0接口是OTG接口，可以软件配置HOST或者DEVICE功能，其它USB接口都是HOST。

@Momo-0
After the laptop enters suspend mode, the power indicator light will turn off. When the power button is pressed again, the power indicator light of the machine will first light up, and then the machine will wake up.

@Momo-0
Currently, there is no open cover wake-up, and you need to manually press the power button. This is a known issue that can be resolved by updating the kernel in the future.

As a development laptop, this machine will mainly focus on user-defined images. We have scripts for customized images available on Github, and we welcome everyone to download and use them.

@Momo-0
Closing the laptop cover will put the machine into sleep mode.

@Momo-0
The current images are written to EMMC by default. If you want to boot from nvme, you can perform partition copying on the system. Then modify the partition label on NVME, and then modify the label of the corresponding cmdline boot partition. You can achieve NVME charging and startup.

@LinuxRk3588
CM5的DSI接口暂时没有做和树莓派PIN TO PIN的排线，规格差距太大，CM5的DSI可以支持2路MIPI 4LINE同时输出,而且兼容2路触摸。用户可以根据自己MIPI屏的规格做转接。

@LinuxRk3588
1、pcie 3.0 x4 现在实际测试速率可以达到多少？论坛上有人说只能支持到pcie 3.0 x2？ %(#ec1313)[只能到X2，理论速度单line是8GT/s，X2就是16GT/s。]
2、mipi dsi的转接线淘宝有卖吗？csi的转接线我看到是有，那个支持双mipi csi接口的转接排线是可以直接接树莓派的两个IMX219模组是吧？%(#f41515)[转接排线淘宝网店就可以买到，可以同时支持两个IMX219工作。]
3、@jack_admin 后边有针对类似CP4目前支持的国产操作系统(麒麟之类的)也支持到5evb上吗？ %(#f21818)[麒麟和统信目前只有CM5-NOTEBOOK可以支持。因为还存在一些兼容性的问题，暂时没有推到CM5-EVB和CP4。]