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    Coolpi 4b Ubuntu22.04 原生系统

    Scheduled Pinned Locked Moved Ubuntu
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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

        T 1 Reply Last reply Reply Quote 0
        • 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

            T 1 Reply Last reply Reply Quote 0
            • 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

                  1 Reply Last reply Reply Quote 0
                  • 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

                    顾 1 Reply Last reply Reply Quote 0
                    • 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

                      1 Reply Last reply Reply Quote 0
                      • 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

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

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

                            1 Reply Last reply Reply Quote 0
                            • 大法师大 大法师 moved this topic from Pi 4B on
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