@george 试了不能用

gst-launch-1.0 v4l2src device=/dev/video11 ! image/jpeg, width=1920, height=1080, framerate=25/1 ! jpegparse ! mppjpegdec ! kmssink plane-id=88
Setting pipeline to PAUSED ...
ERROR: from element /GstPipeline:pipeline0/GstKMSSink:kmssink0: Could not get allowed GstCaps of device
Additional debug info:
../sys/kms/gstkmssink.c(1183): gst_kms_sink_start (): /GstPipeline:pipeline0/GstKMSSink:kmssink0:
driver does not provide mode settings configuration
ERROR: pipeline doesn't want to preroll.
ERROR: from element /GstPipeline:pipeline0/GstKMSSink:kmssink0: GStreamer error: state change failed and some element failed to post a proper error message with the reason for the failure.
Additional debug info:
../libs/gst/base/gstbasesink.c(5878): gst_base_sink_change_state (): /GstPipeline:pipeline0/GstKMSSink:kmssink0:
Failed to start
ERROR: pipeline doesn't want to preroll.
Failed to set pipeline to PAUSED.
Setting pipeline to NULL ...
Freeing pipeline ...

可以通过了，就因为文件路径存在空格

@jack_admin 👍

@george
gstramer的硬件解码插件叫什么 只有openh264dec ?
Screenshot from 2023-03-16 15-21-23.png

@george
上面那个命令末尾添加sync=false 就正常了

@大法师 Hi again, can you please check in a basic README to that fedora repo? I am not able to fork it because there are no commits.

the good news is that the 20230303 download has solved the pip3 install problem and i was able to install opencv as well. It is running on a usb stick at the moment. should this issue be closed?

2)the format commands are not working as shown:

ubuntu@coolpi:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 1 0B 0 disk
sdb 8:16 1 0B 0 disk
mmcblk0 179:0 0 58.2G 0 disk
├─mmcblk0p1 179:1 0 300M 0 part /boot/firmware
└─mmcblk0p2 179:2 0 57.9G 0 part /
mmcblk0boot0 179:32 0 4M 1 disk
mmcblk0boot1 179:64 0 4M 1 disk
zram0 254:0 0 0B 0 disk

the tf chip is sda and sdb upon insertion via a usb adapter. the coolpi does not recognized the chip via the onboard tf card slot.

ubuntu@coolpi:~$ sudo wipefs /dev/sda
ubuntu@coolpi:~$ sudo wipefs /dev/sdb
ubuntu@coolpi:~$ sudo wipefs -a -f /dev/sda
ubuntu@coolpi:~$ sudo wipefs -a -f /dev/sdb
ubuntu@coolpi:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 1 0B 0 disk
sdb 8:16 1 0B 0 disk
mmcblk0 179:0 0 58.2G 0 disk
├─mmcblk0p1 179:1 0 300M 0 part /boot/firmware
└─mmcblk0p2 179:2 0 57.9G 0 part /
mmcblk0boot0 179:32 0 4M 1 disk
mmcblk0boot1 179:64 0 4M 1 disk
zram0 254:0 0 0B 0 disk

@jugg 这个建议不错，需要做这类的参考文档

@allen
示例操作更改标识
sudo e2label /dev/mmcblk0p2 emmc-rootfs

@george 有这样的文档已经很不错了 感谢

@george 好的，不过能稍微再具体点嘛，或者有相关的帖子嘛

@ccjjww1222

Cool Pi 4 Model B用户手册V1.1.pdf

e7303cc9-0108-4906-bbcf-de6249d48181-1676012765810.png

@xws

有ubuntu 20.04 server版本

ae42e5c0-bdb1-4d63-bd3f-b52613339b04-1675905876822.png

@xws

刷机两种方式都支持，主板的pwr按钮是系统开机、关机键。（注意电源适配器使用5V/2A及以上）

https://www.cool-pi.com/topic/126/coolpi-4b-镜像固件离线刷机方法

528d2082-9916-4a63-94f1-3d0a264a94db-1675825279396.png

https://www.cool-pi.com/topic/127/coolpi-4b-镜像固件在线刷机方法

3883e729-1824-47b2-8c15-3e833139c804-1675825309559.png

Cool Pi 4 Model B用户手册V1.1.pdf

@顾真牛 @大法师 感谢你们的帮助🤓

@大法师 收到，大佬

@george
請教一下如果不用 grub ，在 arm 版本的 ubuntu 中通常會建議哪種方式調整？

@zhengbicheng said in 自动连接WIFI:

@ccjjww1222 您误会我的意思了，我的意思是你可以用电脑利用转接器连接Cool-pi开发板的串口。使用串口输入账号密码后就是命令行了。

他是想沿用树莓派预配置wifi信息，刷机自动连接wifi

@大法师 3q，十分感谢

需要注意该文件格式

root@coolpi:/home/coolpi# file /boot/firmware/wifi.txt /boot/firmware/wifi.txt: ASCII text

@大法师 @george

太神啦！感謝

@george

了解，謝謝🙏

@大法师 said in 20221213-ubuntu-20.04-preinstalled-desktop-arm64看不到周边wifi列表、鼠标箭头看不到等现象:

@bbsvs2000

sudo dpkg -i coolpi-kernel_1.0.0_aarch64.deb sudo reboot

deb包安装--增加驱动支持

20230115-ubuntu-20.04-preinstall-server-arm64-coolpi
一直识别不了CH340，usb转串口芯片。装了这个包就可以了

@nickliu Thanks! While burn firmware and insert eMMC or TF card first booting, please save serial console log.

Build a docker image with Dockerfile

$ cat Dockerfile FROM ubuntu:20.04 MAINTAINER JACK<jack@cool-pi.com> #RUN sed -i s@/ports.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list \ && apt-get clean RUN apt-get update ENV DEBIAN_FRONTEND=noninteractive RUN apt-get install -y build-essential chrpath vim expect git curl dialog tzdata locales iputils-ping net-tools ENV TZ=Asia/Shanghai RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone RUN locale-gen en_US.UTF-8 && DEBIAN_FRONTEND=noninteractive dpkg-reconfigure locales ENV LANG=en_US.UTF-8 ENV LANGUAGE=en_US.UTF-8 ENV LC_ALL=en_US.UTF-8 RUN locale-gen en_US RUN useradd coolpi;\ adduser coolpi sudo;\ mkdir -p /home/coolpi;\ chown coolpi:coolpi -R /home/coolpi;\ echo coolpi:coolpi | chpasswd; #CMD su -l coolpi #CMD "/bin/bash" $ docker build -t my-ubuntu:20.04 --rm=true . ...

@kingpin1cn
请使用U22版本验证，当前U20未预装mpp相关组件。

@bbsvs2000
禁用rkisp、cif、csi
rk3588s-cp4.dtb

用于加载/boot/firmware/wifi.txt
wifi_precfg

sudo cp rk3588s-cp4.dtb /boot/firmware/rk3588s-cp4.dtb sudo cp wifi_precfg /usr/sbin/ sudo chmod a+x /usr/sbin/wifi_precfg sudo reboot

@bbsvs2000
https://www.cool-pi.com/topic/159/20221213-ubuntu-20-04-preinstalled-desktop-arm64看不到周边wifi列表-鼠标箭头看不到等现象/21?page=2