我买了HP DeskJet 2778 一体式 Ink Advantage 无线彩色打印机不幸的是它不能很好地与 Lubuntu 配合使用。
我已经安装HPLIP 3.20.X但打印机无法被很好地识别，至少通过 HPLIP 接口无法识别。如果我让 Lubuntu 将其识别为其他型号，不知何故可以打印，但无法扫描。有人能帮我正确安装这台打印机吗？我更希望只使用 USB 接口，避免打印机和 Lubuntu 计算机之间的无线连接。
我用了hp-插件和hp-doctor命令，但没有任何效果。
hp-插件：它尝试寻找插件，然后寻找一些身份验证密钥。说无法下载密钥。我要求它在没有密钥的情况下继续。然后它要求输入 root 密码。输入后，它给出了一个错误：
错误：Python gobject/dbus 可能未安装
错误：插件安装失败
我尝试安装所有我能找到的相关内容，但没有任何效果。
答案1
hp-plugin
HP Linux Imaging and Printing System (ver. 3.20.11)
Plugin Download and Install Utility ver. 2.1
Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
HP Linux Imaging and Printing System (ver. 3.20.11)
Plugin Download and Install Utility ver. 2.1
Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
(python3:1449): GLib-GIO-CRITICAL **: 08:12:56.838: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
(python3:1449): GLib-GIO-CRITICAL **: 08:12:56.838: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
(python3:1449): GLib-GIO-CRITICAL **: 08:12:56.838: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Checking for network connection...
Downloading plug-in from:
Receiving digital keys: /usr/bin/gpg --homedir /home/hontra/.hplip/.gnupg --no-permission-warning --keyserver pgp.mit.edu --recv-keys 0x4ABA2F66DBD5A99894990E0673D770CDA59047B9
-^Creating directory plugin_tmp
Verifying archive integrity... All good.
Uncompressing HPLIP 3.20.11 Plugin Self Extracting Archive..............................................................
HP Linux Imaging and Printing System (ver. 3.20.11)
Plugin Installer ver. 3.0
Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
Plug-in version: 3.20.11
Installed HPLIP version: 3.20.11
Number of files to install: 64
(python3:1804): GLib-GIO-CRITICAL **: 18:56:11.307: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
(python3:1804): GLib-GIO-CRITICAL **: 18:56:11.307: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
(python3:1804): GLib-GIO-CRITICAL **: 18:56:11.307: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Plugin installation failed
error: Python gobject/dbus may be not installed
error: Plug-in install failed.
答案2
HP 2778 AIO 打印机需要进行一些额外的工作才能进行无线打印和扫描。我在这里回答了这个问题：https://askubuntu.com/a/1440601/314168