Try running your scanner software with sudo from the command line and 
see if that makes it work.  If it does, then it's a permissions issue.  
You  probably just need to add yourself to the scanner group and then 
logout and back in and it will work.

Brian Cluff

On 10/24/18 7:40 PM, Michael wrote:
>     I got this printer and it print beautiful photos.... I was so 
> excited. Then I discovered that the scanner doesn't work (bummer). 
> Anyone know how to get it running> I sent a support request to HP but 
> they haven'y gotten back to me yet. (it has been a couple of days) The 
> information they requested is after my signature followed by my 
> attempt to fix it
> From what I've gleaned from it  plugins are not installed (which and 
> how eludes me) and dependencies are not installed.
> -- 
> :-)~MIKE~(-:
>
>  $ hp-check -t
> Saving output in log file: /home/bmike1/hp-check.log
>
> HP Linux Imaging and Printing System (ver. 3.16.3)
> Dependency/Version Check Utility ver. 15.1
>
> Copyright (c) 2001-15 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: linuxmint-18.3 version is not supported. Using linuxmint-17.3 
> versions dependencies to verify and install...
>
> ---------------
> | SYSTEM INFO |
> ---------------
>
>  Kernel: 4.15.0-36-generic #39~16.04.1-Ubuntu SMP Tue Sep 25 08:59:23 
> UTC 2018 GNU/Linux
>  Host: MikesBeast
>  Proc: 4.15.0-36-generic #39~16.04.1-Ubuntu SMP Tue Sep 25 08:59:23 
> UTC 2018 GNU/Linux
>  Distribution: linuxmint 18.3
>  Bitness: 64 bit
>
>
> -----------------------
> | HPLIP CONFIGURATION |
> -----------------------
>
> HPLIP-Version: HPLIP 3.16.3
> HPLIP-Home: /usr/share/hplip
> warning: HPLIP-Installation: Auto installation is not supported for 
> linuxmint distro  18.3 version
>
> Current contents of '/etc/hp/hplip.conf' file:
> # hplip.conf. Generated from hplip.conf.in <http://hplip.conf.in> by 
> configure.
>
> [hplip]
> version=3.16.3
>
> [dirs]
> home=/usr/share/hplip
> run=/var/run
> ppd=/usr/share/ppd/hplip/HP
> ppdbase=/usr/share/ppd/hplip
> doc=/usr/share/doc/hplip
> html=/usr/share/doc/hplip-doc
> icon=no
> cupsbackend=/usr/lib/cups/backend
> cupsfilter=/usr/lib/cups/filter
> drv=/usr/share/cups/drv
> 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=yes
> gui-build=yes
> scanner-build=yes
> fax-build=yes
> dbus-build=yes
> cups11-build=no
> doc-build=yes
> shadow-build=no
> hpijs-install=yes
> foomatic-drv-install=yes
> foomatic-ppd-install=yes
> foomatic-rip-hplip-install=no
> hpcups-install=yes
> cups-drv-install=yes
> cups-ppd-install=no
> internal-tag=3.16.3
> restricted-build=no
> ui-toolkit=qt4
> qt3=no
> qt4=yes
> policy-kit=yes
> lite-build=no
> udev_sysfs_rules=no
> hpcups-only-build=no
> hpijs-only-build=no
> apparmor_build=no
>
>
> Current contents of '/var/lib/hp/hplip.state' file:
> Plugins are not installed. Could not access file: No such file or 
> directory
>
> Current contents of '~/.hplip/hplip.conf' file:
> [last_used]
> device_uri = hp:/net/OfficeJet_4650_series?zc=HPB05ADA63B749
>
> [installation]
> date_time = 10/23/18 22:48:17
> version = 3.16.3
>
>
>  <Package-name>       <Package-Desc> <Required/Optional> <Min-Version> 
> <Installed-Version> <Status>  <Comment>
>
> --------------------------
> |  External Dependencies |
> --------------------------
>
>  scanimage         scanimage - Shell scanning program                 
>        OPTIONAL        1.0          1.0.25          OK         -
>  avahi-utils         avahi-utils                       OPTIONAL        
> -        0.6.32          OK         -
>  error: dbus         DBus - Message bus system                       
> REQUIRED        -        1.10.6          MISSING    'DBUS may not be 
> installed or not running'
>  policykit         PolicyKit - Administrative policy framework        
>           OPTIONAL        -              0.105           OK         -
>  xsane         xsane - Graphical scanner frontend for SANE            
>       OPTIONAL        0.9        0.999           OK         -
>  gs        GhostScript - PostScript and PDF language interpreter and 
> previewer REQUIRED     7.05            9.25            OK  -
>  error: cups         CUPS - Common Unix Printing System               
>          REQUIRED        1.1          -               INCOMPAT   'CUPS 
> may not be installed or not running'
>  network         network -wget                       OPTIONAL        - 
>        1.17.1          OK         -
>
> -------------------------
> |  General Dependencies |
> -------------------------
>
>  error: python3-devel Python devel - Python development files 
> REQUIRED        2.2             3.5.2  MISSING    'python3-devel needs 
> to be installed'
>  libpthread        libpthread - POSIX threads library                 
>      REQUIRED        -        b'2.23'         OK         -
>  python3-xml         Python XML libraries                       
>  REQUIRED        -          2.1.0           OK         -
>  error: cups-devel    CUPS devel- Common Unix Printing System 
> development files    REQUIRED        -              -              
>  MISSING 'cups-devel needs to be installed'
>  python3-pil         PIL - Python Imaging Library (required for 
> commandline scanning with hp-scan) OPTIONAL        -              
>  1.1.7  OK         -
>  error: python3-pyqt4 PyQt 4- Qt interface for Python (for Qt version 
> 4.x)         REQUIRED 4.0             -               MISSING 
> 'python3-pyqt4 needs to be installed'
>  python3X        Python 2.2 or greater - Python programming language  
>         REQUIRED 2.2             3.5.2           OK         -
>  error: python3-pyqt4-dbus PyQt 4 DBus - DBus Support for PyQt4        
>                  OPTIONAL     4.0             -               MISSING 
> 'python3-pyqt4-dbus needs to be installed'
>  error: libusb        libusb - USB library                             
>  REQUIRED -               1.0             MISSING 'libusb needs to be 
> installed'
>  error: libcrypto     libcrypto - OpenSSL cryptographic library 
> REQUIRED        -               1.0.2  MISSING    'libcrypto needs to 
> be installed'
>  error: python3-notify2 Python libnotify - Python bindings for the 
> libnotify Desktop notifications OPTIONAL        -  -              
>  MISSING    'python3-notify2 needs to be installed'
>  python3-dbus        Python DBus - Python bindings for DBus           
>            REQUIRED        0.80.0       1.2.0           OK         -
>  error: libnetsnmp-devel libnetsnmp-devel - SNMP networking library 
> development files REQUIRED       5.0.9           -              
>  MISSING   'libnetsnmp-devel needs to be installed'
>  error: libjpeg       libjpeg - JPEG library                           
>    REQUIRED -               -               MISSING 'libjpeg needs to 
> be installed'
>  error: sane-devel    SANE - Scanning library development files        
>             REQUIRED       -               -               MISSING   
> '           needs to be installed'
>  python3-reportlab   Reportlab - PDF library for Python               
>    OPTIONAL        2.0    3.3.0           OK         -
>  sane        SANE - Scanning library                       REQUIRED    
>     -        -               OK         -
>  error: cups-image    CUPS image - CUPS image development files        
>             REQUIRED       -               -               MISSING   
> '    needs to be installed'
>
> ---------------
> |  COMPILEDEP |
> ---------------
>
>  error: libtool       libtool - Library building support services      
>             REQUIRED     -               -               MISSING '    
>                    needs to be installed'
>  make        make - GNU make utility to maintain groups of programs    
>    REQUIRED        3.0            4.1             OK         -
>  error: gcc        gcc - GNU Project C and C++ Compiler               
>        REQUIRED        -        5.4.0           MISSING    'gcc needs 
> to be installed'
>
> ----------------------
> |  Python Extentions |
> ----------------------
>
>  cupsext         CUPS-Extension                        REQUIRED        
> -          3.16.3          OK         -
>  hpmudext        IO-Extension                      REQUIRED        -   
>      3.16.3          OK         -
>
> -----------------------
> |  Scan Configuration |
> -----------------------
>
>  scanext         Scan-SANE-Extension                       REQUIRED    
>     -        3.16.3          OK         -
> '/etc/sane.d/dll.d/hpaio' not found.
>  hpaio         HPLIP-SANE-Backend                        REQUIRED      
>   -          3.16.3          OK         'hpaio found in 
> /etc/sane.d/dll.conf'
>
> -----------------------
> |  Other Dependencies |
> -----------------------
>
>
> ------------------------------
> | DISCOVERED SCANNER DEVICES |
> ------------------------------
>
> No Scanner found.
>
> --------------------------
> | DISCOVERED USB DEVICES |
> --------------------------
>
> No devices found.
>
> ---------------------------------
> | INSTALLED CUPS PRINTER QUEUES |
> ---------------------------------
>
> HP-ENVY-Photo-7800-series
> -------------------------
> Type: Unknown
> Device URI: 
> usb://HP/ENVY%20Photo%207800%20series?serial=TH85N6V14S&interface=1
> PPD: /etc/cups/ppd/HP-ENVY-Photo-7800-series.ppd
> warning: Failed to read /etc/cups/ppd/HP-ENVY-Photo-7800-series.ppd 
> ppd file
> PPD Description:
> Printer status: printer HP-ENVY-Photo-7800-series is idle.  enabled 
> since Mon 22 Oct 2018 03:00:05 PM EDT
> warning: Printer is not HPLIP installed. Printers must use the hp: or 
> hpfax: CUPS backend for HP-Devices.
>
>
> --------------
> | PERMISSION |
> --------------
>
> error: Unsupported model: ENVY_Photo_7800_series
> -----------
> | SUMMARY |
> -----------
>
> Missing Required Dependencies
> -----------------------------
> error: 'libdbus-1-dev' package is missing/incompatible
> error: 'libcups2' package is missing/incompatible
> error: 'python3-dev' package is missing/incompatible
> error: 'libcups2-dev' package is missing/incompatible
> error: 'cups-bsd' package is missing/incompatible
> error: 'cups-client' package is missing/incompatible
> error: 'python3-pyqt4' package is missing/incompatible
> error: 'libusb-1.0.0-dev' package is missing/incompatible
> error: 'openssl' package is missing/incompatible
> error: 'libsnmp-dev' package is missing/incompatible
> error: 'snmp-mibs-downloader' package is missing/incompatible
> error: 'libjpeg8-dev' package is missing/incompatible
> error: 'libsane-dev' package is missing/incompatible
> error: 'libcupsimage2-dev' package is missing/incompatible
> error: 'libtool' package is missing/incompatible
> error: 'build-essential' package is missing/incompatible
>
> Missing Optional Dependencies
> -----------------------------
> error: 'python3-dbus.mainloop.qt' package is missing/incompatible
> error: 'python3-notify2' package is missing/incompatible
>
> Total Errors: 15
> Total Warnings: 1
>
>
> Done.
>
> $ sudo apt install python3-devel cups-devel python3-pyqt4 
> python3-pyqt4-dbus libusb libcrypto python3-notify2 libnetsnmp-devel 
> DBUS dbus cups CUPS libjpeg sane-devel cups-image libtool gcc
> [sudo] password for bmike1:
> Sorry, try again.
> [sudo] password for bmike1:
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> E: Unable to locate package python3-devel
> E: Unable to locate package cups-devel
> E: Unable to locate package python3-pyqt4-dbus
> E: Unable to locate package libusb
> E: Unable to locate package libcrypto
> E: Unable to locate package libnetsnmp-devel
> E: Unable to locate package DBUS
> E: Unable to locate package CUPS
> E: Unable to locate package libjpeg
> E: Unable to locate package sane-devel
> E: Unable to locate package cups-image
>
>
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