我已将系统从 19.10 升级到 20.04，除了无法加载 hp-systray 或程序的任何其他部分外，一切正常。
我遇到的问题是 pyqt4 在 20.04 中可用，但我无法找到它。
以下终端错误：
HP Linux Imaging and Printing System (ver. 3.20.2)
System Tray Status Service ver. 2.0
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.
error: No module named 'PyQt4'
error: Unable to load Qt4/Qt5 support. Is it installed?
我也运行了
hp-check -r；输出如下：
rick@rick-M52BC-M32BC:~$ hp-check -r
Saving output in log file: /home/rick/hp-check.log
HP Linux Imaging and Printing System (ver. 3.20.2)
Dependency/Version Check Utility ver. 15.1
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.
Note: hp-check can be run in three modes:
1. Compile-time check mode (-c or --compile): Use this mode before compiling the
HPLIP supplied tarball (.tar.gz or .run) to determine if the proper dependencies
are installed to successfully compile HPLIP.
2. Run-time check mode (-r or --run): Use this mode to determine if a distro
supplied package (.deb, .rpm, etc) or an already built HPLIP supplied tarball
has the proper dependencies installed to successfully run.
3. Both compile- and run-time check mode (-b or --both) (Default): This mode
will check both of the above cases (both compile- and run-time dependencies).
Check types:
a. EXTERNALDEP - External Dependencies
b. GENERALDEP - General Dependencies (required both at compile and run time)
c. COMPILEDEP - Compile time Dependencies
d. [All are run-time checks]
PYEXT SCANCONF QUEUES PERMISSION
Status Types:
OK
MISSING - Missing Dependency or Permission or Plug-in
INCOMPAT - Incompatible dependency-version or Plugin-version
warning: ubuntu-20.04 version is not supported. Using ubuntu-19.10 versions dependencies to verify and install...
---------------
| SYSTEM INFO |
---------------
Kernel: 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020 GNU/Linux
Host: rick-M52BC-M32BC
Proc: 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020 GNU/Linux
Distribution: ubuntu 20.04
Bitness: 64 bit
-----------------------
| HPLIP CONFIGURATION |
-----------------------
HPLIP-Version: HPLIP 3.20.2
HPLIP-Home: /usr/share/hplip
warning: HPLIP-Installation: Auto installation is not supported for ubuntu distro 20.04 version
文件当前内容/etc/hp/hplip.conf：
# hplip.conf. Generated from hplip.conf.in by configure.
[hplip]
version=3.20.2
[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hplip/HP
ppdbase=/usr/share/ppd/hplip
doc=/usr/share/doc/hplip-3.20.2
html=/usr/share/doc/hplip-3.20.2
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp
bin=/usr/bin
apparmor=/etc/apparmor.d
# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=no
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=no
foomatic-drv-install=no
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.20.2
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
qt5=no
policy-kit=no
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no
apparmor_build=yes
class-driver=no
文件当前内容/var/lib/hp/hplip.state：
Plugins are not installed. Could not access file: No such file or directory
文件当前内容~/.hplip/hplip.conf：
[upgrade]
notify_upgrade = true
last_upgraded_time = 1582830956
pending_upgrade_time = 0
latest_available_version = 3.17.10
[settings]
systray_visible = 0
systray_messages = 0
[last_used]
device_uri = hpaio:/net/officejet_5200_series?ip=192.168.1.139&queue=false
printer_name = HP_OfficeJet_5200_series
working_dir = .
[commands]
scan = /usr/bin/xsane -V %SANE_URI%
[refresh]
rate = 30
enable = false
type = 1
[polling]
enable = false
interval = 5
device_list =
[fax]
voice_phone =
email_address =
[installation]
date_time = 04/27/20 18:23:19
version = 3.20.2
<Package-name> <Package-Desc> <Required/Optional> <Min-Version> <Installed-Version> <Status> <Comment>
-------------------------
| External Dependencies |
-------------------------
error: cups CUPS - Common Unix Printing System REQUIRED 1.1 - INCOMPAT 'CUPS may not be installed or not running'
gs GhostScript - PostScript and PDF language interpreter and previewer REQUIRED 7.05 9.50 OK -
xsane xsane - Graphical scanner frontend for SANE OPTIONAL 0.9 0.999 OK -
scanimage scanimage - Shell scanning program OPTIONAL 1.0 1.0.29 OK -
dbus DBus - Message bus system REQUIRED - 1.12.16 OK -
policykit PolicyKit - Administrative policy framework OPTIONAL - 0.105 OK -
network network -wget OPTIONAL - 1.20.3 OK -
avahi-utils avahi-utils OPTIONAL - 0.7 OK -
------------------------
| General Dependencies |
------------------------
libjpeg libjpeg - JPEG library REQUIRED - - OK -
cups-devel CUPS devel- Common Unix Printing System development files REQUIRED - - OK -
cups-image CUPS image - CUPS image development files REQUIRED - - OK -
libpthread libpthread - POSIX threads library REQUIRED - b'2.31' OK -
libusb libusb - USB library REQUIRED - 1.0 OK -
sane SANE - Scanning library REQUIRED - - OK -
sane-devel SANE - Scanning library development files REQUIRED - - OK -
libnetsnmp-devel libnetsnmp-devel - SNMP networking library development files REQUIRED 5.0.9 5.8 OK -
libcrypto libcrypto - OpenSSL cryptographic library REQUIRED - 1.1.1 OK -
python3X Python 2.2 or greater - Python programming language REQUIRED 2.2 3.8.2 OK -
python3-notify2 Python libnotify - Python bindings for the libnotify Desktop notifications OPTIONAL - - OK -
error: python3-pyqt4-dbus PyQt 4 DBus - DBus Support for PyQt4 OPTIONAL 4.0 - MISSING 'python3-pyqt4-dbus needs to be installed'
error: python3-pyqt4 PyQt 4- Qt interface for Python (for Qt version 4.x) REQUIRED 4.0 - MISSING 'python3-pyqt4 needs to be installed'
python3-dbus Python DBus - Python bindings for DBus REQUIRED 0.80.0 1.2.16 OK -
python3-xml Python XML libraries REQUIRED - 2.2.9 OK -
python3-devel Python devel - Python development files REQUIRED 2.2 3.8.2 OK -
python3-pil PIL - Python Imaging Library (required for commandline scanning with hp-scan) OPTIONAL - 7.0.0 OK -
python3-reportlab Reportlab - PDF library for Python OPTIONAL 2.0 3.5.34 OK -
--------------
| COMPILEDEP |
--------------
libtool libtool - Library building support services REQUIRED - 2.4.6 OK -
gcc gcc - GNU Project C and C++ Compiler REQUIRED - 9.3.0 OK -
make make - GNU make utility to maintain groups of programs REQUIRED 3.0 4.2.1 OK -
---------------------
| Python Extentions |
---------------------
cupsext CUPS-Extension REQUIRED - 3.20.2 OK -
hpmudext IO-Extension REQUIRED - 3.20.2 OK -
----------------------
| Scan Configuration |
----------------------
hpaio HPLIP-SANE-Backend REQUIRED - 3.20.2 OK 'hpaio found in /etc/sane.d/dll.conf'
scanext Scan-SANE-Extension REQUIRED - 3.20.2 OK -
------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------
The device `hpaio:/usb/OfficeJet_5200_series?serial=TH9B5BD184` is a Hewlett-Packard OfficeJet_5200_series all-in-one
--------------------------
| DISCOVERED USB DEVICES |
--------------------------
Device URI Model
------------------------------ ------------------------
hp:/usb/OfficeJet_5200_series? HP OfficeJet 5200 series
serial=TH9B5BD184
---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------
HP_Fax_4
--------
Type: Fax
Device URI: hpfax:/usb/OfficeJet_5200_series?serial=TH9B5BD184
PPD: /etc/cups/ppd/HP_Fax_4.ppd
warning: Failed to read /etc/cups/ppd/HP_Fax_4.ppd ppd file
PPD Description:
Printer status: printer HP_Fax_4 is idle. enabled since Thu 27 Feb 2020 05:11:03 PM EST
Communication status: Good
HP_OfficeJet_5200_series
------------------------
Type: Unknown
Device URI: usb://HP/OfficeJet%205200%20series?serial=TH9B5BD184&interface=1
PPD: /etc/cups/ppd/HP_OfficeJet_5200_series.ppd
warning: Failed to read /etc/cups/ppd/HP_OfficeJet_5200_series.ppd ppd file
PPD Description:
Printer status: printer HP_OfficeJet_5200_series is idle. enabled since Mon 27 Apr 2020 05:22:39 PM EDT
warning: Printer is not HPLIP installed. Printers must use the hp: or hpfax: CUPS backend for HP-Devices.
HP_OfficeJet_5200_series_72D17F_3_
----------------------------------
Type: Unknown
Device URI: implicitclass://HP_OfficeJet_5200_series_72D17F_3_/
PPD: /etc/cups/ppd/HP_OfficeJet_5200_series_72D17F_3_.ppd
warning: Failed to read /etc/cups/ppd/HP_OfficeJet_5200_series_72D17F_3_.ppd ppd file
PPD Description:
Printer status: printer HP_OfficeJet_5200_series_72D17F_3_ is idle. enabled since Mon 27 Apr 2020 04:28:16 PM EDT
warning: Printer is not HPLIP installed. Printers must use the hp: or hpfax: CUPS backend for HP-Devices.
OfficeJet_5200_series_TH9B5BD184_
---------------------------------
Type: Unknown
Device URI: implicitclass://OfficeJet_5200_series_TH9B5BD184_/
PPD: /etc/cups/ppd/OfficeJet_5200_series_TH9B5BD184_.ppd
warning: Failed to read /etc/cups/ppd/OfficeJet_5200_series_TH9B5BD184_.ppd ppd file
PPD Description:
Printer status: printer OfficeJet_5200_series_TH9B5BD184_ is idle. enabled since Mon 27 Apr 2020 04:28:13 PM EDT
warning: Printer is not HPLIP installed. Printers must use the hp: or hpfax: CUPS backend for HP-Devices.
--------------
| PERMISSION |
--------------
USB None Required - - OK Node:'/dev/bus/usb/001/004' Perm:' root lp rw- rw- rw- rw- r--'
-----------
| SUMMARY |
-----------
Missing Required Dependencies
-----------------------------
error: 'libcups2' package is missing/incompatible
error: 'python3-pyqt4' package is missing/incompatible
error: 'gtk2-engines-pixbuf' package is missing/incompatible
Missing Optional Dependencies
-----------------------------
error: 'python3-dbus.mainloop.qt' package is missing/incompatible
Total Errors: 3
Total Warnings: 3
答案1
您可能必须完全重新安装 HP 打印机支持，因为您删除了与 HPLIP 相关的所有内容。您可能需要转到 HPLIP 页面并下载并安装最新的 HPLIP。如果您能够执行此操作，它将设置您的打印机，然后让您有机会安装正确的插件，以启用打印机的所有功能。
如果您在执行任何其他操作之前先运行 N0rbert 给您的命令，那么您可能会避免很多麻烦：
sudo apt install hplip-gui
（我知道，你当时不知道这一点；我也是通过艰苦的努力才学到这一点的。这是因为 HPLIP 已经安装在 Ubuntu 上，但没有安装 GUI，而你需要 GUI 才能获得插件。）
然后运行“HPLIP Toolbox”（我从 Dash 运行它，但您也可以从命令行运行它）。这将打开一个 GUI，让您有机会安装所需的插件。许多 HP 打印机需要安装此插件才能执行某些功能（例如扫描和传真）。
每次安装新版本的 Ubuntu（或重新安装）时，我都必须这样做，因为我的 HP 打印机需要插件，而且你的打印机似乎也需要插件。默认情况下不会加载插件，不幸的是，几乎没有任何地方提供有关如何解决问题的信息。
答案2
HPLIP 从 3.16.5 及以上版本支持 Qt5
启用 qt5 支持
You need to install the following dependencies
PyQt5
python-qt5-dbus
Go to source of hplip. By default its in ~/Downloads.
Run the following commands
./configure --prefix=/usr --enable-qt5 --disable-qt4
make
"make install" as root user
答案3
从 20.04 存储库安装的版本似乎存在问题，因为在升级到 20.04 之前，我的计算机上已经安装了 3.20.3，所以我从 ubuntu 20.10 存储库安装了 3.20.5。现在，除了设备管理器之外，一切似乎都正常工作。当我单击设备管理器的 hp-systray 时，它永远不会加载设备管理器。有一个 gnome-shell 扩展可以替代 hp-systray，我可以从那里调用设备管理器。所以不是完美运行，但它正在工作。这是 alt hp 应用程序的链接。https://extensions.gnome.org/extension/1339/hplip-menu/