我有 CentOS 7，我想要登录屏幕上的图标用户...
我正在尝试System Settings-> Account Details，单击图像
但这个方法不行...
第二部分，正在更改背景图像......
谢谢你！
编辑
编辑
# gsettings list-keys org.gnome.login-screen
fallback-logo
disable-user-list
allowed-failures
enable-smartcard-authentication
banner-message-enable
enable-password-authentication
disable-restart-buttons
logo
enable-fingerprint-authentication
banner-message-text
# gsettings list-recursively org.gnome.login-screen
org.gnome.login-screen fallback-logo ''
org.gnome.login-screen disable-user-list false
org.gnome.login-screen allowed-failures 3
org.gnome.login-screen enable-smartcard-authentication false
org.gnome.login-screen banner-message-enable false
org.gnome.login-screen enable-password-authentication true
org.gnome.login-screen disable-restart-buttons false
org.gnome.login-screen logo '/usr/share/pixmaps/fedora-gdm-logo.png'
org.gnome.login-screen enable-fingerprint-authentication true
org.gnome.login-screen banner-message-text ''
# gsettings get org.gnome.login-screen logo
'/usr/share/pixmaps/fedora-gdm-logo.png'
现在设置我的新图像标志！
# gsettings set org.gnome.login-screen logo '/usr/share/pixmaps/faces/penguin.jpg'
(process:5208): dconf-WARNING **: failed to commit changes to dconf: The connection is closed
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