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[#]: subject: "How to Change Login Screen Background in Ubuntu"
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[#]: via: "https://www.debugpoint.com/change-login-background-ubuntu/"
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[#]: author: "Arindam https://www.debugpoint.com/author/admin1/"
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[#]: collector: "lkxed"
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[#]: translator: "robsean"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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How to Change Login Screen Background in Ubuntu
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======
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**This is how you can get rid of that boring login screen background in Ubuntu and set a nice picture to welcome you each time you log on.**
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I, always think that when you boot up your system, a nice login screen should greet you. That itself set the context of your upcoming work or activity that you are about to do. Although, I am not a Windows fan, but I admire how Windows 10 login background changes every day from Bing wallpapers, and it looks nice. Isn’t it?
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A while back, we covered how to [change login background in Fedora][1] and [elementary OS][2]. And now this guide explains how you change it in vanilla Ubuntu with GNOME Shell.
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Login screen background is part of display manager property. This guide uses a script in GitHub created by a user to make it seamless and easy for average user. Otherwise, you have to change the Gnome Display Manager (gdm) CSS files manually after extracting the `.gresource` file, then compile it – which is complicated in general.
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![Ubuntu Login screen - before change][3]
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Ubuntu Login screen – before change
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### Change Login Background in Ubuntu
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- Open a terminal (press CTRL+ALT+T)
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- Download the [GitHub repo][4] using the below command.
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```
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wget github.com/thiggy01/change-gdm-background/raw/master/change-gdm-background
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```
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**Note**: If you do not have wget, install it using `sudo apt install wget`
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**Ubuntu 22.04 Jammy Jellyfish** users require an additional code change to make it work because the developer did not fix it in GitHub. So here’s what you need to do.
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Open the `change-gdm-background` file via gedit. Then, go to the following line (#15) and add `|jammy`.
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![script change to allow jammy][5]
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script change to allow jammy
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Then, go to the following two lines (#144 and #184). Change `gdm3.css` to `gdm.css`. As shown below.
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![correct the css file for gdm][6]
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correct the css file for gdm
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And finally, save the file and follow the instructions as below. This workaround is only for Ubuntu 22.04 login screen change.
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- Change the permission of the script to make it executable
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```
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chmod +x change-gdm-background
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```
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- Then change the login background wallpaper in Ubuntu using the below command. Change the path of your image.
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```
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sudo ./change-gdm-background ~/Pictures/tree.jpg
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```
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This step might require `libglib2.0-dev` package, which will be installed automatically. This is required to extract/compile the `.gresource`.
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And after installation, it would prompt you to restart gdm. Press N, to be on the safe side.
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- Log out and you can see the changed background in Ubuntu.
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- If you are not seeing the change, try restarting your system and then try to log in.
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![Ubuntu Login screen After Change][7]
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Ubuntu Login screen with background After Change
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### Restore the stock login screen
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The script also provides a feature to revert the stock login screen. It takes a backup of your `.gresource` file before changing it. So, from the terminal, simply run below to restore the original login screen.
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```
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sudo ./change-gdm-background --restore
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```
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That should change the login screen back to its original form.
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Let me know whether it worked for you using the comment box below. This should work for all the latest versions of Ubuntu Linux.
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--------------------------------------------------------------------------------
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via: https://www.debugpoint.com/change-login-background-ubuntu/
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作者：[Arindam][a]
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选题：[lkxed][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.debugpoint.com/author/admin1/
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[b]: https://github.com/lkxed
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[1]: https://www.debugpoint.com/2021/09/change-login-background-fedora/
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[2]: https://www.debugpoint.com/2021/07/change-lock-login-screen-background-elementary-os/
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[3]: https://www.debugpoint.com/wp-content/uploads/2021/09/Ubuntu-Login-screen-before-change-1024x539.jpg
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[4]: https://github.com/thiggy01/change-gdm-background
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[5]: https://www.debugpoint.com/wp-content/uploads/2022/09/script-change-to-allow-jammy.jpg
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[6]: https://www.debugpoint.com/wp-content/uploads/2022/09/correct-the-css-file-for-gdm.jpg
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[7]: https://www.debugpoint.com/wp-content/uploads/2021/09/Ubuntu-Login-screen-After-Change-1024x538.jpg
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@ -0,0 +1,107 @@
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[#]: subject: "How to Change Login Screen Background in Ubuntu"
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[#]: via: "https://www.debugpoint.com/change-login-background-ubuntu/"
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[#]: author: "Arindam https://www.debugpoint.com/author/admin1/"
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[#]: collector: "lkxed"
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[#]: translator: " "
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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如何更改 Ubuntu 的登录屏幕背景
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======
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**这是让你如何摆脱 Ubuntu 的无趣的登录背景屏幕，并在你每次登录时设置一张极好的图片来欢迎你的指南。**
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我总是认为，在你启动你的系统后，一个极好的登录屏幕来欢迎你，是一件美妙的事。这本身就为你即将开始的工作或活动渲染了愉快的氛围。尽管，我不是一名 Windows 的粉丝，但是我很欣赏 Windows 10 的登录背景都会每天随着 Bing 壁纸进行更改，它看起来好极了，不是吗？
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前段时间，我们讨论了如何 [更改 Fedora 的登录屏幕背景][1] 和 [更改 elementary OS 的登录屏幕背景][2] 。现在这篇指南将向你解释，如何更改使用 GNOME Shell 的 Ubuntu 的登录屏幕背景。
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登录屏幕背景是显示管理器属性的一部分。这篇指南将使用一位用户在 GitHub 中创建的一个脚本，来使普通的用户能够纵享丝滑。否则，在提取 `.gresource` 文件后，你必须手动更改 <ruby>Gnome 显示管理器<rt>Gnome Display Manager</rt></ruby> (gdm) 的 CSS 文件，接下来再编译它 – 一般来说，这是很复杂的。
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![Ubuntu Login screen - before change][3]
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Ubuntu 登录屏幕 – 在更改前
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### 更改 Ubuntu 的登录背景
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- 打开一个终端 (按下组合键 CTRL+ALT+T)
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- 下载 [GitHub repo][4] ，使用下面的命令。
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```
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wget github.com/thiggy01/change-gdm-background/raw/master/change-gdm-background
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```
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**注意**: 如果你没有 wget ，使用 `sudo apt install wget` 来安装它
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**Ubuntu 22.04 Jammy Jellyfish** 用户需要更改一些额外的代码来使其工作，因为，在 GitHub 中，开发者没有修复它。因此，在这里你需要自己来更改。
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使用 gedit 来打开 `change-gdm-background` 文件。接下来，转到下面的行 (#15) 并添加 `|jammy` 。
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![script change to allow jammy][5]
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脚本更改为允许 jammy
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接下来，转到下面的两行 (#144 和 #184)。将 `gdm3.css` 更改为 `gdm.css` 。如下图所示。
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![correct the css file for gdm][6]
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修正针对 gdm 的 css 文件
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最后，保存文件，并遵循如下的操作指南。这种解决方法只适用于 Ubuntu 22.04 的登录屏幕的更改。
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- 更改脚本的权限来使其可执行
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```
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chmod +x change-gdm-background
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```
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- 接下来，更改 Ubuntu 的登录背景壁纸，使用下面的命令。按照你的图片相应地更改路径
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```
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sudo ./change-gdm-background ~/Pictures/tree.jpg
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```
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这一步骤可能需要 `libglib2.0-dev` 软件包，它将会自动地安装。提取/编译 `.gresource` 会用到它
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在安装后，它应该会提示你重新启动 gdm 。慎重起见，按下 N 按键。
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- 注销后，你可以看到更改后的 Ubuntu 的背景。
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- 如果你没有看到更改，尝试重新启动你的系统，然后尝试登录。
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![Ubuntu Login screen After Change][7]
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在更改后的，Ubuntu 的登录屏幕背景
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### 恢复先前的登录屏幕
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该脚本也提供了一种恢复先前的登录屏幕的特色功能。它在更改你的 `.gresource` 文件前，会将其进行备份。因此，恢复先前的登录屏幕，只需要在终端中简单地运行下面的命令。
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```
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sudo ./change-gdm-background --restore
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```
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这应该会将其登录屏幕更改回其先前的形式。
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在下面的评论框中，让我知道这篇指南的内容是否对你有效果，这应该适用于所有的最新版本的 Ubuntu Linux 。
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--------------------------------------------------------------------------------
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via: https://www.debugpoint.com/change-login-background-ubuntu/
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作者：[Arindam][a]
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选题：[lkxed][b]
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译者：[robsean](https://github.com/robsean)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.debugpoint.com/author/admin1/
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[b]: https://github.com/lkxed
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[1]: https://www.debugpoint.com/2021/09/change-login-background-fedora/
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[2]: https://www.debugpoint.com/2021/07/change-lock-login-screen-background-elementary-os/
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[3]: https://www.debugpoint.com/wp-content/uploads/2021/09/Ubuntu-Login-screen-before-change-1024x539.jpg
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[4]: https://github.com/thiggy01/change-gdm-background
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[5]: https://www.debugpoint.com/wp-content/uploads/2022/09/script-change-to-allow-jammy.jpg
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[6]: https://www.debugpoint.com/wp-content/uploads/2022/09/correct-the-css-file-for-gdm.jpg
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[7]: https://www.debugpoint.com/wp-content/uploads/2021/09/Ubuntu-Login-screen-After-Change-1024x538.jpg
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