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    Coolpi 4b Ubuntu22.04 原生系统

    Scheduled Pinned Locked Moved Ubuntu
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    • G
      george @zensation
      last edited by

      @zensation You can use the shell to log in, expand the partition capacity, and then try to log in from the UI interface.

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      • Z
        zensation @george
        last edited by

        @george i was trying to log in via com port but on serial connection. i didnt find it documented so anyone else that runs into the issue the username is ubuntu and the password is coolpi

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        • G
          george @zensation
          last edited by

          @zensation If this is the case, it means that the image you are using is incorrect, or it is not successfully created.

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          • Z
            zensation @george
            last edited by

            @george its exactly correct based on other screenshots of the ubuntu 22.0.4 builds seen on here that also show a username of ubuntu and somewhere someone shared their password as coolpi. i was able to figure it out when i plugged in an hdmi cable. before that was just trying to access terminal through UART.

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            • C
              cbratschi
              last edited by

              This post is deleted!
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              • G
                george @allen
                last edited by george

                @allen 更新内核代码,已经解决了概率鼠标消失问题。
                @cbratschi Add onedrive download link.

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                • T
                  Twsuts
                  last edited by

                  我在系统中使用想开机自启动一个QT程序,我沿用了树莓派的方法,在~/.profile文件中添加了我的启动路径,但是程序并没有像树莓派一样启动,传统的自启动程序会进入桌面再启动程序,效果会差很多时间也长很多,还有就是开机的动画能不能有个教程,如果太忙了就算了,希望能回答我第一个问题

                  大法师大 1 Reply Last reply Reply Quote 0
                  • 大法师大
                    大法师 @Twsuts
                    last edited by

                    @Twsuts
                    提供个demo与配置,我们测试下

                    jack@cool-pi.com

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                    • T
                      Twsuts @大法师
                      last edited by

                      @大法师 配置就是在~/profile文件末尾加上 echo “coolpi” | sudo -S /home/coolpi/qt5/demo ,这是启动程序的命令,树莓派跟我以前用的ROCKPI正常是能启动程序的,在界面出来以前,你看到的效果就是黑屏然后直接进入了我们的程序,demo可以随便写一个QT demo,然后开机重启的时候看能不能在进入界面之前启动

                      大法师大 1 Reply Last reply Reply Quote 0
                      • 大法师大
                        大法师 @Twsuts
                        last edited by 大法师

                        @Twsuts
                        这是阻塞系统运行?还是后台运行作为开机动画?

                        我试了分别在/etc/profile、/home/coolpi/.profile文件尾增加qt demo是可以的

                        sudo apt install qtbase5-examples
                        
                        coolpi@coolpi:~$ cat /etc/profile
                        # /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
                        # and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
                        
                        if [ "${PS1-}" ]; then
                          if [ "${BASH-}" ] && [ "$BASH" != "/bin/sh" ]; then
                            # The file bash.bashrc already sets the default PS1.
                            # PS1='\h:\w\$ '
                            if [ -f /etc/bash.bashrc ]; then
                              . /etc/bash.bashrc
                            fi
                          else
                            if [ "`id -u`" -eq 0 ]; then
                              PS1='# '
                            else
                              PS1='$ '
                            fi
                          fi
                        fi
                        
                        if [ -d /etc/profile.d ]; then
                          for i in /etc/profile.d/*.sh; do
                            if [ -r $i ]; then
                              . $i
                            fi
                          done
                          unset i
                        fi
                        
                        #echo "coolpi" | sudo -S /usr/lib/aarch64-linux-gnu/qt5/examples/gui/analogclock/analogclock
                        coolpi@coolpi:~$
                        
                        coolpi@coolpi:~$ cat ~/.profile 
                        # ~/.profile: executed by the command interpreter for login shells.
                        # This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
                        # exists.
                        # see /usr/share/doc/bash/examples/startup-files for examples.
                        # the files are located in the bash-doc package.
                        
                        # the default umask is set in /etc/profile; for setting the umask
                        # for ssh logins, install and configure the libpam-umask package.
                        #umask 022
                        
                        # if running bash
                        if [ -n "$BASH_VERSION" ]; then
                            # include .bashrc if it exists
                            if [ -f "$HOME/.bashrc" ]; then
                                . "$HOME/.bashrc"
                            fi
                        fi
                        
                        # set PATH so it includes user's private bin if it exists
                        if [ -d "$HOME/bin" ] ; then
                            PATH="$HOME/bin:$PATH"
                        fi
                        
                        # set PATH so it includes user's private bin if it exists
                        if [ -d "$HOME/.local/bin" ] ; then
                            PATH="$HOME/.local/bin:$PATH"
                        fi
                        
                        echo "coolpi" | sudo -S /usr/lib/aarch64-linux-gnu/qt5/examples/gui/analogclock/analogclock
                        coolpi@coolpi:~$
                        

                        因为不是后台运行,重启后会阻塞桌面系统显示窗口。此时可以通过键盘ctrl+alt+f6切换到终端命令行进行恢复修改操作。

                        也可以后台运行测试

                        vim ~/.profile
                        ...
                        echo "coolpi" | sudo -S /usr/lib/aarch64-linux-gnu/qt5/examples/gui/analogclock/analogclock &
                        

                        jack@cool-pi.com

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                        • T
                          Twsuts @大法师
                          last edited by

                          @大法师 感谢您的回答,您的操作看起来很正常,这样看来确实很奇怪,但我这边不论是ubuntu22还是ubuntu20我在.profile文件下启动我的qt程序都没反应,它会直接进入桌面,而在/etc/xdg/autostart/下可以自动启动我的应用程序,但是后者显示屏会出现几秒钟的ubuntu图形界面,这看起来很糟糕!

                          大法师大 1 Reply Last reply Reply Quote 0
                          • 大法师大
                            大法师 @Twsuts
                            last edited by

                            @Twsuts
                            百度网盘或onedrive有最新镜像,是否镜像不一致?

                            jack@cool-pi.com

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                            • T
                              Twsuts @大法师
                              last edited by

                              @大法师 前天刚刷的最新镜像,甚至于我在使用ssh登陆时都能启动程序,终端登陆就会启动程序,但是显示屏上就是直接进入了桌面。

                              大法师大 顾 2 Replies Last reply Reply Quote 0
                              • 大法师大
                                大法师 @Twsuts
                                last edited by

                                @Twsuts
                                是不是自动登陆设置打开了?

                                jack@cool-pi.com

                                T 2 Replies Last reply Reply Quote 0
                                • T
                                  Twsuts @大法师
                                  last edited by

                                  @大法师 还真是的

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                                  • T
                                    Twsuts @大法师
                                    last edited by

                                    @大法师 关了也没用,换了一个最简单的demo也没用,我只能通过我原来的方法启动程序,然后把整个桌面服务关了试试看了,不过这样启动会慢很多

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                                    • 顾
                                      顾真牛 @Twsuts
                                      last edited by

                                      @Twsuts 看看登录服务用的是什么gdm还是LightDM,改那个的配置文件。不启动桌面启动你的QT程序

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                                      • 顾
                                        顾真牛 @Twsuts
                                        last edited by

                                        @Twsuts SSH能启动 开机不启动,你看看是不是用户不一致

                                        T 2 Replies Last reply Reply Quote 0
                                        • T
                                          Twsuts @顾真牛
                                          last edited by

                                          @顾真牛 用户都是一样的coolpi,我现在解决了这个问题,在那之前加入export DISPLAY=:0 这样就可以启动了

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                                          • T
                                            Twsuts @顾真牛
                                            last edited by

                                            @顾真牛 @大法师 感谢你们的帮助🤓

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                                            • 大法师大 大法师 moved this topic from Pi 4B on
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