我的打印机是 HP LaserJet Pro MFP m126nw。在 Ubuntu 20.04（使用 HPLIP 3.20.3）中设置打印机后，当我尝试扫描时，提示需要安装驱动程序插件。当我尝试安装驱动程序插件时，它根本无法安装。
然后我使用终端并输入以下命令：
hp-plugin
输出为：
HP Linux Imaging and Printing System (ver. 3.20.3)
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. 3.20.3)
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.
Checking for network connection...
Downloading plug-in from:
Traceback (most recent call last):
File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
File "/usr/share/hplip/installer/pluginhandler.py", line 254, in download
core = core_install.CoreInstall()
File "/usr/share/hplip/installer/core_install.py", line 239, in __init__
self.passwordObj = password.Password(ui_mode)
File "/usr/share/hplip/base/password.py", line 88, in __init__
self.__readAuthType() # self.__authType
File "/usr/share/hplip/base/password.py", line 110, in __readAuthType
distro_name = get_distro_name().lower()
File "/usr/share/hplip/base/password.py", line 78, in get_distro_name
return distro.linux_distribution(full_distribution_name=False)[0]
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 125, in linux_distribution
return _distro.linux_distribution(full_distribution_name)
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 681, in linux_distribution
self.version(),
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 741, in version
self.lsb_release_attr('release'),
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 903, in lsb_release_attr
return self._lsb_release_info.get(attribute, '')
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 556, in __get__
ret = obj.__dict__[self._fname] = self._f(obj)
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 1014, in _lsb_release_info
stdout = subprocess.check_output(cmd, stderr=devnull)
File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.8/subprocess.py", line 512, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
with os.fdopen(os.open(pr_filename,
PermissionError: [Errno 13] Permission denied: '/var/crash/_usr_share_hplip_plugin.py.1000.crash'
Original exception was:
Traceback (most recent call last):
File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
File "/usr/share/hplip/installer/pluginhandler.py", line 254, in download
core = core_install.CoreInstall()
File "/usr/share/hplip/installer/core_install.py", line 239, in __init__
self.passwordObj = password.Password(ui_mode)
File "/usr/share/hplip/base/password.py", line 88, in __init__
self.__readAuthType() # self.__authType
File "/usr/share/hplip/base/password.py", line 110, in __readAuthType
distro_name = get_distro_name().lower()
File "/usr/share/hplip/base/password.py", line 78, in get_distro_name
return distro.linux_distribution(full_distribution_name=False)[0]
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 125, in linux_distribution
return _distro.linux_distribution(full_distribution_name)
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 681, in linux_distribution
self.version(),
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 741, in version
self.lsb_release_attr('release'),
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 903, in lsb_release_attr
return self._lsb_release_info.get(attribute, '')
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 556, in __get__
ret = obj.__dict__[self._fname] = self._f(obj)
File "/home/rls/.local/lib/python3.8/site-packages/distro.py", line 1014, in _lsb_release_info
stdout = subprocess.check_output(cmd, stderr=devnull)
File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.8/subprocess.py", line 512, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
的输出lsb_release -a为：
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
我把设备中预装的 Python 弄乱了。
摘录自我的一个问题（其中我解释了 Python 问题）：
我猜我的 Ubuntu 安装中预装了 Python 3.8.2。我想升级到 Python 3.8.3。所以我按照这个网站上提到的说明操作在 Ubuntu 20.04 LTS 中安装 Python 3.8.3 - TechPiezo文章
最后给出了两个建议，一是替换（或覆盖）已经安装的 Python 3.8.2 版本；二是安装 Python v3.8.2 的同时再安装 Python v3.8.3。我选择了第一个选项。
和库尔菲的帮助（Kulfy 的回答链接），我希望恢复回预装的 Python 3.8.2。
现在，的输出hp-plugin是：
HP Linux Imaging and Printing System (ver. 3.20.3)
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. 3.20.3)
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.
Checking for network connection...
Downloading plug-in from:
Traceback (most recent call last):
File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
File "/usr/share/hplip/installer/pluginhandler.py", line 254, in download
core = core_install.CoreInstall()
File "/usr/share/hplip/installer/core_install.py", line 239, in __init__
self.passwordObj = password.Password(ui_mode)
File "/usr/share/hplip/base/password.py", line 88, in __init__
self.__readAuthType() # self.__authType
File "/usr/share/hplip/base/password.py", line 110, in __readAuthType
distro_name = get_distro_name().lower()
File "/usr/share/hplip/base/password.py", line 78, in get_distro_name
return distro.linux_distribution(full_distribution_name=False)[0]
File "/usr/lib/python3/dist-packages/distro.py", line 122, in linux_distribution
return _distro.linux_distribution(full_distribution_name)
File "/usr/lib/python3/dist-packages/distro.py", line 677, in linux_distribution
self.version(),
File "/usr/lib/python3/dist-packages/distro.py", line 737, in version
self.lsb_release_attr('release'),
File "/usr/lib/python3/dist-packages/distro.py", line 899, in lsb_release_attr
return self._lsb_release_info.get(attribute, '')
File "/usr/lib/python3/dist-packages/distro.py", line 552, in __get__
ret = obj.__dict__[self._fname] = self._f(obj)
File "/usr/lib/python3/dist-packages/distro.py", line 1012, in _lsb_release_info
stdout = subprocess.check_output(cmd, stderr=devnull)
File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.8/subprocess.py", line 512, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
with os.fdopen(os.open(pr_filename,
PermissionError: [Errno 13] Permission denied: '/var/crash/_usr_share_hplip_plugin.py.1000.crash'
Original exception was:
Traceback (most recent call last):
File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
File "/usr/share/hplip/installer/pluginhandler.py", line 254, in download
core = core_install.CoreInstall()
File "/usr/share/hplip/installer/core_install.py", line 239, in __init__
self.passwordObj = password.Password(ui_mode)
File "/usr/share/hplip/base/password.py", line 88, in __init__
self.__readAuthType() # self.__authType
File "/usr/share/hplip/base/password.py", line 110, in __readAuthType
distro_name = get_distro_name().lower()
File "/usr/share/hplip/base/password.py", line 78, in get_distro_name
return distro.linux_distribution(full_distribution_name=False)[0]
File "/usr/lib/python3/dist-packages/distro.py", line 122, in linux_distribution
return _distro.linux_distribution(full_distribution_name)
File "/usr/lib/python3/dist-packages/distro.py", line 677, in linux_distribution
self.version(),
File "/usr/lib/python3/dist-packages/distro.py", line 737, in version
self.lsb_release_attr('release'),
File "/usr/lib/python3/dist-packages/distro.py", line 899, in lsb_release_attr
return self._lsb_release_info.get(attribute, '')
File "/usr/lib/python3/dist-packages/distro.py", line 552, in __get__
ret = obj.__dict__[self._fname] = self._f(obj)
File "/usr/lib/python3/dist-packages/distro.py", line 1012, in _lsb_release_info
stdout = subprocess.check_output(cmd, stderr=devnull)
File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.8/subprocess.py", line 512, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
我应该怎样安装该插件？
答案1
第一次重新安装可能lsb-release错过
sudo apt-get install --reinstall lsb-release
此外，您还拥有一堆混乱的本地和全局 Python 模块。
删除有问题的
pip3 uninstall distro
然后重试。