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树莓派4b安装ubuntu20.04并设置7寸触摸屏
树莓派4b安装ubuntu20.04并设置7寸触摸屏
- ubuntu20.04镜像下载
- 烧录镜像
- ubuntu20.04配置
- 配置7寸触摸显示器
ubuntu20.04镜像下载
ubuntu官方系统下载网址,选择20.04lot版本进行下载
烧录镜像
烧录镜像有多种方式可以选择。
(1)镜像烧录软件 Etcher
/
(2)树莓派官方烧录工具
/
选择要烧录的镜像,选择盘符进行系统烧录
ubuntu20.04配置
将内存卡插入树莓派,树莓派连接网线,开机。首次进入,账号密码均为ubuntu。
换源,这里换中科大的源
ubuntu@ubuntu:~$ sudo vi /etc/apt/sources.list
用vi编辑器将里面所有的ports.ubuntu更换为mirrors.ustc.edu
:%s/ports.ubuntu/mirrors.ustc.edu
vi编辑器退出并保存shift+zz,(正常退出:q)
然后更新并安装桌面
sudo apt update
sudo apt upgradeapt-get install ubuntu-desktop
现在可以使用带桌面的ubuntu20.04系统了。
配置7寸触摸显示器
7寸显示器hdmi接口连接树莓派hdmi接口,7寸显示器的触摸接口连接树莓派USB接口,显示器无需接电源。在开机之前需要配置树莓派config.txt文件才可以使用7寸屏幕,否则会黑屏。
拔出tf存储卡,连接电脑,打开boot目录下的config.txt,在config.txt最下面添加如下代码:
disable_overscan=1
hdmi_force_hotplug=1 # 强制树莓派使用HDMI端口,即使树莓派没有检测到显示器连接仍然使用HDMI端口。
#该值为0时允许树莓派尝试检测显示器,当该值为1时,强制树莓派使用HDMI。
hdmi_drive=2 # 可以使用该配置项来改变HDMI端口的电压输出:
# 1-DVI输出电压。该模式下,HDMI输出中不包含音频信号。
# 2-HDMI输出电压。该模式下,HDMI输出中包含音频信号。
hdmi_group=2 # 决定的分辨率
# DMT分辨率是hdmi_group=2,计算机显示器使用的分辨率;hdmi_group=1是CEA分辨率 ,CEA规定的电视规格分辨率
hdmi_mode=4
以下为hdmi_mode
hdmi_mode=1 640x350 85Hz
hdmi_mode=2 640x400 85Hz
hdmi_mode=3 720x400 85Hz
hdmi_mode=4 640x480 60Hz
hdmi_mode=5 640x480 72Hz
hdmi_mode=6 640x480 75Hz
hdmi_mode=7 640x480 85Hz
hdmi_mode=8 800x600 56Hz
hdmi_mode=9 800x600 60Hz
hdmi_mode=10 800x600 72Hz
hdmi_mode=11 800x600 75Hz
hdmi_mode=12 800x600 85Hz
hdmi_mode=13 800x600 120Hz
hdmi_mode=14 848x480 60Hz
hdmi_mode=15 1024x768 43Hz DO NOT USE
hdmi_mode=16 1024x768 60Hz
hdmi_mode=17 1024x768 70Hz
hdmi_mode=18 1024x768 75Hz
hdmi_mode=19 1024x768 85Hz
hdmi_mode=20 1024x768 120Hz
hdmi_mode=21 1152x864 75Hz
hdmi_mode=22 1280x768 reduced blanking
hdmi_mode=23 1280x768 60Hz
hdmi_mode=24 1280x768 75Hz
hdmi_mode=25 1280x768 85Hz
hdmi_mode=26 1280x768 120Hz reduced blanking
hdmi_mode=27 1280x800 reduced blanking
hdmi_mode=28 1280x800 60Hz
hdmi_mode=29 1280x800 75Hz
hdmi_mode=30 1280x800 85Hz
hdmi_mode=31 1280x800 120Hz reduced blanking
hdmi_mode=32 1280x960 60Hz
hdmi_mode=33 1280x960 85Hz
hdmi_mode=34 1280x960 120Hz reduced blanking
hdmi_mode=35 1280x1024 60Hz
hdmi_mode=36 1280x1024 75Hz
hdmi_mode=37 1280x1024 85Hz
hdmi_mode=38 1280x1024 120Hz reduced blanking
hdmi_mode=39 1360x768 60Hz
hdmi_mode=40 1360x768 120Hz reduced blanking
hdmi_mode=41 1400x1050 reduced blanking
hdmi_mode=42 1400x1050 60Hz
hdmi_mode=43 1400x1050 75Hz
hdmi_mode=44 1400x1050 85Hz
hdmi_mode=45 1400x1050 120Hz reduced blanking
hdmi_mode=46 1440x900 reduced blanking
hdmi_mode=47 1440x900 60Hz
hdmi_mode=48 1440x900 75Hz
hdmi_mode=49 1440x900 85Hz
hdmi_mode=50 1440x900 120Hz reduced blanking
hdmi_mode=51 1600x1200 60Hz
hdmi_mode=52 1600x1200 65Hz
hdmi_mode=53 1600x1200 70Hz
hdmi_mode=54 1600x1200 75Hz
hdmi_mode=55 1600x1200 85Hz
hdmi_mode=56 1600x1200 120Hz reduced blanking
hdmi_mode=57 1680x1050 reduced blanking
hdmi_mode=58 1680x1050 60Hz
hdmi_mode=59 1680x1050 75Hz
hdmi_mode=60 1680x1050 85Hz
hdmi_mode=61 1680x1050 120Hz reduced blanking
hdmi_mode=62 1792x1344 60Hz
hdmi_mode=63 1792x1344 75Hz
hdmi_mode=64 1792x1344 120Hz reduced blanking
hdmi_mode=65 1856x1392 60Hz
hdmi_mode=66 1856x1392 75Hz
hdmi_mode=67 1856x1392 120Hz reduced blanking
hdmi_mode=68 1920x1200 reduced blanking
hdmi_mode=69 1920x1200 60Hz
hdmi_mode=70 1920x1200 75Hz
hdmi_mode=71 1920x1200 85Hz
hdmi_mode=72 1920x1200 120Hz reduced blanking
hdmi_mode=73 1920x1440 60Hz
hdmi_mode=74 1920x1440 75Hz
hdmi_mode=75 1920x1440 120Hz reduced blanking
hdmi_mode=76 2560x1600 reduced blanking
hdmi_mode=77 2560x1600 60Hz
hdmi_mode=78 2560x1600 75Hz
hdmi_mode=79 2560x1600 85Hz
hdmi_mode=80 2560x1600 120Hz reduced blanking
hdmi_mode=81 1366x768 60Hz
hdmi_mode=82 1080p 60Hz
hdmi_mode=83 1600x900 reduced blanking
hdmi_mode=84 2048x1152 reduced blanking
hdmi_mode=85 720p 60Hz
hdmi_mode=86 1366x768 reduced blanking
树莓派ubuntu20.04配置完成
参考文章链接:
[1]: =distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.control
[2]: =distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1.control
[3]:
[4]: .html
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