Posts made by george

@anernest
Refer to the following document to provide EDID information and demesg information for inserting and removing HDMI.
https://www.cool-pi.com/topic/296/how-to-drive-non-standard-resolution-hdmi-displays?_=1701475254750

@anernest
Is there any abnormality when connecting HDMI or TYPEC separately？

@jugg loader.和uboot存储在spi nor，擦除EMMC不会影响刷机功能。

@阿里 EMMC整体擦除，然后格式化一遍。再制作镜像。尽量避免数据拷贝过程中断电。

@qys2022
如下图所示C42的电容短接，观察串口有没有输出。怀疑D1二极管是不是贴反了？然后DTS里边要关闭PCIE3.0部分配置，否则系统也无法启动。

@阿里
这种一般是文件系统损坏导致图形界面启不来，可以尝试卸载然后重新安装图形界面。

@anernest
Sorry, the TYPEC interface of RK3588 does not support DP MST mode. You can expand up to one HDMI and one TYPEC display terminal, and with the machine's own eDP screen, you can achieve three different displays. If you need to implement two fully functional TYPEC interfaces and two HDMI terminals, you can consider customizing a CM5 core board motherboard. If you have some hands-on ability, we are willing to cooperate with you to achieve it. Thank you for your support of Coolpi.

@etrin
Please refer to the following document to complete the model conversion.
https://github.com/rockchip-linux/rknn-toolkit

@dark-road42719

• Thank you very much for your support of Coolpi products. If you have a certain level of hands-on ability, the screen can be upgraded. Currently, the designed screen has a standard EDP interface, which allows for adaptive resolution without software modification, and can reach a maximum resolution of 4K (3840 * 2160). The difficulty here is the wiring issue. Currently, the LCD interface of FHD is eDP (2line) 30PIN, and most 2K 4K screens require EDP (4line) 40PIN, so upgrading requires modifying the wiring. If you are not in a hurry, we will arrange to customize a 2K 4K universal 40pin ribbon cable.

• Currently, in addition to the LCD of the machine itself, we have also adapted a touch LCD, and the ribbon cables have been customized.

• The PIN definition on the motherboard end is shown in the following figure：
  

@edwardzhou
从log信息看USB设备还是有兼容性问题，识别的时候有报错，如果手上有USB hub可以串接hub再测试。或者换一个USB摄像头模组确认一下问题。

@Xelef2000

MIPI-LVDS-TC358775.pdf
TC358775.DSN

@hangman 可能是读卡器兼容性问题，之前有测试过的读卡器如下链接：【淘宝】https://m.tb.cn/h.5kZgqBq?tk=DvWdWeDZbHp CZ3457 「SD卡TF卡USB3.0高速二合一读卡器手机相机内存卡行车记录仪GL3224」
点击链接直接打开 或者 淘宝搜索直接打开

@Xelef2000 The CM5-EVB machine itself does not have an LVDS interface. If you need to implement it, you can use the MIPI interface to transfer it. The optional chips include TC358775 GM8775 LT9211. From the test results, the compatibility of the winter solstice chips is the best. If you need detailed information, please leave a message and organize a copy later.

@edwardzhou dmesg传上来看一下有没有底层的报错信息。

@hangman tf卡优先级高于EMMC。

@hangman etcher会格式化，不需要单独处理。

@hangman
如下脚本放置到U盘或者TF卡中，然后运行就会导出EMMC的系统。导出的镜像可以重新烧录到EMMC或者TF卡中。

!# /bin/sh

IMAGE_NAME="$(date "+%Y%m%d")-rootfs.img"
IMAGE_SIZE=8192
LOOP_NUMBER=$(losetup -f)

echo "01:remove firstrun"
rm /var/lib/misc/firstrun
echo "02:Establishing a mount directory"
mkdir ./mnt
echo "03:dd image file"
dd if=/dev/zero of=./$IMAGE_NAME bs=1M count=$IMAGE_SIZE
echo "04:Mirror Partition"
printf 'n\np\n1\n32768\n1081343\nn\np\n2\n1081344\n16777215\nw\n' | fdisk ./$IMAGE_NAME
echo "05:format partition"
partx -a -v ./$IMAGE_NAME
mkfs.vfat $LOOP_NUMBER"p1"
echo 'yes\n' | mkfs.ext4 $LOOP_NUMBER"p2"
echo "06:copy boot files"
mount $LOOP_NUMBER"p1" ./mnt
cp /boot/firmware/* ./mnt/ -R
umount ./mnt
echo "07:backup rootfs"
rm ./backup.fs
dump -0u -f - /dev/mmcblk0p2 >> ./backup.fs
echo "08:copy rootfs files"
mount $LOOP_NUMBER"p2" ./mnt
cd ./mnt
restore -rf ../backup.fs
umount ./mnt
cd ../
e2fsck -p -f $LOOP_NUMBER"p2"
resize2fs -M $LOOP_NUMBER"p2"
e2label $LOOP_NUMBER"p2" writable
losetup -d $LOOP_NUMBER
echo "09:backimg ok"
fdisk -l ./$IMAGE_NAME

backupimg.sh

@阿里 如下图所示，不要接错了。可以参考EVB的原理图USB的连接方法。

@airobot机器人开发 谢谢分享。

@阿里 这里标识有问题，下载接口是OTG0 DM DP，还有VBUS-DET，WIKI上已经更新了修改以后的文件。注意下载比对。

@anernest Please upload a copy of dmesg information. Thank you.

• By default, the Cockpit package is included in the Ubuntu 22.04 default repository. You can install it by running the following command:

    sudo apt-get install cockpit -y

• After installing Cockpit, run the following command to install the Podman module:

    sudo apt-get install cockpit-podman -y

• After installing Cockpit, start the Cockpit service and have it start when the system reboots:

    systemctl start cockpit
    systemctl enable cockpit

• You can also use the following command to check the status of Cockpit:

     systemctl status cockpit

• You should see the following output:

●cockpit.service - Cockpit Web Service
     Loaded: loaded (/lib/systemd/system/cockpit.service; static)
     Active: active (running) since Tue 2023-11-21 08:44:56 UTC; 7min ago
TriggeredBy: ● cockpit.socket
       Docs: man:cockpit-ws(8)
    Process: 336904 ExecStartPre=/usr/lib/cockpit/cockpit-certificate-ensure --for-cockpit-tls (code=exited, status=0/SUCCESS)
   Main PID: 336905 (cockpit-tls)
      Tasks: 3 (limit: 37954)
     Memory: 1.5M
        CPU: 358ms
     CGroup: /system.slice/cockpit.service
             └─336905 /usr/lib/cockpit/cockpit-tls

• At this point, Cockpit has started and is listening on port 9090. You can use the following command to view:

     ss -antpl | grep 9090

• You should see the following output:

     LISTEN 0      0                  *:9090            *:*

• Configure a UFW firewall and open port 9090

• Now, open a web browser and use the URL https://your-server-ip:9090 Access the Cockpit web interface. You should see the Cockpit login page:
  
  

@jugg 文件系统损坏了！该刷机就刷机！当让也可以用TF卡或者U盘启动，备份数据。

@jugg
尝试把流控关闭。

@airobot机器人开发 好的！正常编译完内核以后需要把modules.tar.gz 解压到文件系统的/lib 目录，这里边主要是一些驱动的ko文件。

@qys2022 不使用NC就好了。不用接高或者低

@airobot机器人开发 系统镜像做到TF卡或者U盘里边，默认TF卡或者U盘启动优先级高于EMMC，系统启动后手动挂载EMMC分区就可以导出数据了。

@Momo-0
Thank you for sharing. If you have any questions during use, I hope you can raise them. Thank you very much for your support.

@阿里 系统镜像可以重新刷一下，如果有修改导致图像界面启动不了的话。