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Bug#983349: hplip: while scanning , error 9 : impossible to scan

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alain

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Feb 22, 2021, 1:50:03 PM2/22/21
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Package: hplip
Version: 3.21.2+dfsg1-1
Followup-For: Bug #983349
X-Debbugs-Cc: compte.per...@bbox.fr

sorry , i have just seen : not unstable compatible .

so , if you think there's a solution , it will be good .

also , i am looking for a canon lide 25 scanner in order to solve the problem .

was searching a canonscan lide 300 but lide 25 was cheapiest .

shipped in germany .



-- Package-specific info:
Saving output in log file: /home/alain/hp-check.log

HP Linux Imaging and Printing System (ver. 3.21.2)
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

Gtk-Message: 19:31:40.843: Failed to load module "canberra-gtk-module"
warning: debian-unstable version is not supported. Using debian-10.7 versions dependencies to verify and install...

---------------
| SYSTEM INFO |
---------------

Kernel: 5.10.0-3-amd64 #1 SMP Debian 5.10.13-1 (2021-02-06) GNU/Linux
Host: sid
Proc: 5.10.0-3-amd64 #1 SMP Debian 5.10.13-1 (2021-02-06) GNU/Linux
Distribution: debian unstable
Bitness: 64 bit


-----------------------
| HPLIP CONFIGURATION |
-----------------------

HPLIP-Version: HPLIP 3.21.2
HPLIP-Home: /usr/share/hplip
warning: HPLIP-Installation: Auto installation is not supported for debian distro unstable version

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.21.2

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hplip/HP
ppdbase=/usr/share/ppd/hplip
doc=/usr/share/doc/hplip
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=no
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=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.21.2
restricted-build=no
ui-toolkit=qt5
qt3=no
qt4=no
qt5=yes
policy-kit=yes
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no
apparmor_build=no
class-driver=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:
[commands]
scan = /usr/bin/simple-scan %SANE_URI%

[fax]
email_address =
voice_phone =

[last_used]
device_uri = escl:http://127.0.0.1:60000
printer_name = HP_ENVY_5530_series
working_dir = .

[polling]
device_list =
enable = false
interval = 5

[refresh]
enable = false
rate = 30
type = 1

[settings]
systray_messages = 0
systray_visible = 0

[upgrade]
last_upgraded_time = 1613842662
notify_upgrade = true
pending_upgrade_time = 0

[installation]
date_time = 02/22/21 19:31:41
version = 3.21.2


<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 9.53.3 OK -
Gtk-Message: 19:31:42.385: Failed to load module "canberra-gtk-module"
Gtk-Message: 19:31:42.408: Failed to load module "canberra-gtk-module"
xsane xsane - Graphical scanner frontend for SANE OPTIONAL 0.9 0.999 OK -
scanimage scanimage - Shell scanning program OPTIONAL 1.0 1.0.31 OK -
dbus DBus - Message bus system REQUIRED - 1.12.20 OK -
policykit PolicyKit - Administrative policy framework OPTIONAL - 0.105 OK -
network network -wget OPTIONAL - 1.21 OK -
avahi-utils avahi-utils OPTIONAL - 0.8 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 -
libavahi-dev libavahi-dev REQUIRED - - OK -
libnetsnmp-devel libnetsnmp-devel - SNMP networking library development files REQUIRED 5.0.9 5.9 OK -
libcrypto libcrypto - OpenSSL cryptographic library REQUIRED - 1.1.1 OK -
python3X Python 2.2 or greater - Python programming language REQUIRED 2.2 3.9.1 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 - 2.2.10 OK -
python3-devel Python devel - Python development files REQUIRED 2.2 3.9.1 OK -
python3-pil PIL - Python Imaging Library (required for commandline scanning with hp-scan) OPTIONAL - 8.1.0 OK -
python3-reportlab Reportlab - PDF library for Python OPTIONAL 2.0 3.5.59 OK -

--------------
| COMPILEDEP |
--------------

libtool libtool - Library building support services REQUIRED - 2.4.6 OK -
gcc gcc - GNU Project C and C++ Compiler REQUIRED - 10.2.1 OK -
make make - GNU make utility to maintain groups of programs REQUIRED 3.0 4.3 OK -

---------------------
| Python Extentions |
---------------------

cupsext CUPS-Extension REQUIRED - 3.21.2 OK -
hpmudext IO-Extension REQUIRED - 3.21.2 OK -

----------------------
| Scan Configuration |
----------------------

'/etc/sane.d/dll.d/hpaio' not found.
hpaio HPLIP-SANE-Backend REQUIRED - 3.21.2 OK 'hpaio found in /etc/sane.d/dll.conf'
scanext Scan-SANE-Extension REQUIRED - 3.21.2 OK -

------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------

device `escl:http://127.0.0.1:60000' is a HP ENVY 5530 series [FE04D6] (USB) flatbed scanner
device `hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX' is a Hewlett-Packard ENVY_5530_series all-in-one


--------------------------
| DISCOVERED USB DEVICES |
--------------------------

Device URI Model
-------------------------------- -------------------
hp:/usb/ENVY_5530_series?serial= HP ENVY 5530 series
CN595530XD06BX

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------


HP-ENVY-5530-series
-------------------
Type: Printer
Device URI: hp:/usb/ENVY_5530_series?serial=CN595530XD06BX
PPD: /etc/cups/ppd/HP-ENVY-5530-series.ppd
PPD Description: HP Envy 5530 Series, hpcups 3.21.2
Printer status: printer HP-ENVY-5530-series is idle. enabled since Mon Feb 22 10:23:22 2021
[31;01merror: Device busy: hp:/usb/ENVY_5530_series?serial=CN595530XD06BX [0m
error: Device not found
error: Communication status: Failed

HP_ENVY_5530_series_FE04D6_USB_
-------------------------------
Type: Unknown
Device URI: implicitclass://HP_ENVY_5530_series_FE04D6_USB_/
PPD: /etc/cups/ppd/HP_ENVY_5530_series_FE04D6_USB_.ppd
PPD Description: HP ENVY 5530 series, driverless, cups-filters 1.28.7
Printer status: printer HP_ENVY_5530_series_FE04D6_USB_ is idle. enabled since Mon Feb 22 18:41:00 2021
warning: Printer is not HPLIP installed. Printers must use the hp: or hpfax: CUPS backend for HP-Devices.


--------------
| PERMISSION |
--------------

USB HP-ENVY-5530-series Required - - OK Node:'/dev/bus/usb/005/002' Perm:' root lp rw- rw- rw- rw- rw- r--'

-----------
| SUMMARY |
-----------

Missing Required Dependencies
-----------------------------
error: 'cups' package is missing or 'cups' service is not running.
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: 4
Total Warnings: 1


Done.

-- System Information:
Debian Release: bullseye/sid
APT prefers unstable
APT policy: (500, 'unstable'), (100, 'testing'), (100, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-3-amd64 (SMP w/16 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages hplip depends on:
ii adduser 3.118
ii cups 2.3.3op2-3
ii hplip-data 3.21.2+dfsg1-1
ii libc6 2.31-9
ii libcups2 2.3.3op2-3
ii libdbus-1-3 1.12.20-2
ii libhpmud0 3.21.2+dfsg1-1
ii libpython3.9 3.9.1-4
ii libsane-hpaio 3.21.2+dfsg1-1
ii libsane1 1.0.31-4
ii lsb-base 11.1.0
ii printer-driver-hpcups 3.21.2+dfsg1-1
ii python3 3.9.1-1
ii python3-dbus 1.2.16-5
ii python3-gi 3.38.0-2
ii python3-pexpect 4.8.0-1
ii python3-pil 8.1.0-1
ii python3-reportlab 3.5.59-1
ii wget 1.21-1+b1
ii xz-utils 5.2.5-1.0

Versions of packages hplip recommends:
ii avahi-daemon 0.8-5
ii policykit-1 0.105-30
ii printer-driver-postscript-hp 3.21.2+dfsg1-1
ii sane-utils 1.0.31-4

Versions of packages hplip suggests:
pn hplip-doc <none>
ii hplip-gui 3.21.2+dfsg1-1
ii python3-notify2 0.3-4
ii system-config-printer 1.5.14-1

-- no debconf information

Brian Potkin

unread,
Feb 22, 2021, 2:50:02 PM2/22/21
to
severity 983349 important
tags 983349 - upstream
thanks



On Mon 22 Feb 2021 at 19:18:06 +0100, alain wrote:

> Package: hplip
> Version: 3.21.2+dfsg1-1
> Severity: grave
> Tags: upstream
> Justification: renders package unusable
> X-Debbugs-Cc: compte.per...@bbox.fr
>
> last weekend , while scanning a document , hp-scan went wrong .
>
> no more xsane , simple-scan or hp-scan work

Thank you for your report, alain.

Please provide

systemctl list-units "ipp-usb*" | grep service

and

scanimage -L

Regards,

Brian..

alain

unread,
Feb 22, 2021, 3:30:03 PM2/22/21
to
Package: hplip
Version: 3.21.2+dfsg1-1
Followup-For: Bug #983349
X-Debbugs-Cc: compte.per...@bbox.fr

thanks Brian .

here are what you asked me :

alain@sid:~$ systemctl list-units "ipp-usb*" | grep service
ipp-usb.service loaded active running Daemon for IPP over USB printer support


alain@sid:~$ scanimage -L
device `escl:http://127.0.0.1:60000' is a HP ENVY 5530 series [FE04D6] (USB)
flatbed scanner
device `hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX' is a Hewlett-Packard
ENVY_5530_series all-in-one

is that what you wanted ?

tried vuescan : no works no more .
Gtk-Message: 21:13:29.004: Failed to load module "canberra-gtk-module"
device_uri = hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX
printer_name = HP_ENVY_5530_series
working_dir = .

[polling]
device_list =
enable = false
interval = 5

[refresh]
enable = false
rate = 30
type = 1

[settings]
systray_messages = 0
systray_visible = 0

[upgrade]
last_upgraded_time = 1613842662
notify_upgrade = true
pending_upgrade_time = 0

[installation]
date_time = 02/22/21 21:13:29
version = 3.21.2


<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 9.53.3 OK -
Gtk-Message: 21:13:30.546: Failed to load module "canberra-gtk-module"
Gtk-Message: 21:13:30.564: Failed to load module "canberra-gtk-module"
---------------------------------------------- --------------------------
hp:/usb/ENVY_5530_series?serial=CN595530XD06BX HP ENVY 5530 series

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------


HP-ENVY-5530-series
-------------------
Type: Printer
Device URI: hp:/usb/ENVY_5530_series?serial=CN595530XD06BX
PPD: /etc/cups/ppd/HP-ENVY-5530-series.ppd
PPD Description: HP Envy 5530 Series, hpcups 3.21.2
Printer status: printer HP-ENVY-5530-series is idle. enabled since Mon Feb 22 10:23:22 2021
[31;01merror: Device busy: hp:/usb/ENVY_5530_series?serial=CN595530XD06BX [0m
error: Device not found
error: Communication status: Failed

HP_ENVY_5530_series_FE04D6_USB_
-------------------------------
Type: Unknown
Device URI: implicitclass://HP_ENVY_5530_series_FE04D6_USB_/
PPD: /etc/cups/ppd/HP_ENVY_5530_series_FE04D6_USB_.ppd
PPD Description: HP ENVY 5530 series, driverless, cups-filters 1.28.7
Printer status: printer HP_ENVY_5530_series_FE04D6_USB_ is idle. enabled since Mon Feb 22 20:50:59 2021

Brian Potkin

unread,
Feb 22, 2021, 3:40:05 PM2/22/21
to
On Mon 22 Feb 2021 at 21:16:17 +0100, alain wrote:

> Package: hplip
> Version: 3.21.2+dfsg1-1
> Followup-For: Bug #983349
> X-Debbugs-Cc: compte.per...@bbox.fr
>
> thanks Brian .
>
> here are what you asked me :
>
> alain@sid:~$ systemctl list-units "ipp-usb*" | grep service
> ipp-usb.service loaded active running Daemon for IPP over USB printer support

ipp-usb is active, as designed. I suggest you read sections 13, 14 and
15 at

https://wiki.debian.org/CUPSDriverlessPrinting

> alain@sid:~$ scanimage -L
> device `escl:http://127.0.0.1:60000' is a HP ENVY 5530 series [FE04D6] (USB)
> flatbed scanner
> device `hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX' is a Hewlett-Packard
> ENVY_5530_series all-in-one
>
> is that what you wanted ?

Yes, thanks.

Can you scan with

simple-scan escl:http://127.0.0.1:60000 ?

> tried vuescan : no works no more .

Not one of ours, but an interesting data point.

Cheers,

Brian.

alain

unread,
Feb 22, 2021, 4:30:03 PM2/22/21
to
Package: hplip
Version: 3.21.2+dfsg1-1
Followup-For: Bug #983349
X-Debbugs-Cc: compte.per...@bbox.fr

your command : simple-scan escl:http://127.0.0.1:60000 was nearly ok .

simple-scan started to connect and , quickly , closed itself : "cannot connect"

i've read your texts .

the only thing i understood is that usb connections has become now like network
connections

alain@sid:~$ lsusb -v | grep -A 3 bInterfaceClass.*7
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer
bInterfaceProtocol 4
iInterface 0
--
bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer
bInterfaceProtocol 2 Bidirectional
iInterface 0
--
bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer
bInterfaceProtocol 4
iInterface 0
can't get debug descriptor: Resource temporarily unavailable
Couldn't open device, some information will be missing
--
bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer
bInterfaceProtocol 4
iInterface 0
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing

new ipp-over-usb seems to be not compatible with libsane-hpaio (my driver)

so i have a big problem .

don't know the solution .


-- Package-specific info:

Brian Potkin

unread,
Feb 22, 2021, 6:40:03 PM2/22/21
to
On Mon 22 Feb 2021 at 22:17:52 +0100, alain wrote:

> Package: hplip
> Version: 3.21.2+dfsg1-1
> Followup-For: Bug #983349
> X-Debbugs-Cc: compte.per...@bbox.fr
>
> your command : simple-scan escl:http://127.0.0.1:60000 was nearly ok .
>
> simple-scan started to connect and , quickly , closed itself : "cannot connect"

That is a possible upstream bug in SANE for this device.
ipp-usb has taken control of the USB endpoints detailed above and
libsane-hpaio is unable to access them. This is a consquence of how
IPP-over-USB interworks with USB. It is not a bug in either ipp-usb
or libsane-hpaio.

> so i have a big problem .
>
> don't know the solution .

Please install sane-airscan and give

scanimage -L

Cheers,

Brian.

alain

unread,
Feb 23, 2021, 3:30:04 AM2/23/21
to
Package: hplip
Version: 3.21.2+dfsg1-1
Followup-For: Bug #983349
X-Debbugs-Cc: compte.per...@bbox.fr

alain@sid:~$ sudo apt install --reinstall sane-airscan
[sudo] Mot de passe de alain :
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances... Fait
Lecture des informations d'état... Fait
0 mis à jour, 0 nouvellement installés, 1 réinstallés, 0 à enlever et 9 non mis
à jour.
Il est nécessaire de prendre 117 ko dans les archives.
Après cette opération, 0 o d'espace disque supplémentaires seront utilisés.
Réception de :1 http://deb.debian.org/debian testing/main amd64 sane-airscan
amd64 0.99.24-1 [117 kB]
117 ko réceptionnés en 0s (1 268 ko/s)
(Lecture de la base de données... 283524 fichiers et répertoires déjà
installés.)
Préparation du dépaquetage de .../sane-airscan_0.99.24-1_amd64.deb ...
Dépaquetage de sane-airscan (0.99.24-1) sur (0.99.24-1) ...
Paramétrage de sane-airscan (0.99.24-1) ...
Traitement des actions différées (« triggers ») pour man-db (2.9.4-2) ...

alain@sid:~$ scanimage -L
device `escl:http://127.0.0.1:60000' is a HP ENVY 5530 series [FE04D6] (USB)
flatbed scanner

device `airscan:e0:HP ENVY 5530 series [FE04D6] (USB)' is a eSCL HP ENVY 5530
series [FE04D6] (USB) ip=127.0.0.1


device `hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX' is a Hewlett-Packard
ENVY_5530_series all-in-one

still understood nothing .

is that what you wanted ?

do i have to open a "sane" bug ?

Brian Potkin

unread,
Feb 23, 2021, 6:10:03 AM2/23/21
to
On Tue 23 Feb 2021 at 09:17:03 +0100, alain wrote:

[...]

> alain@sid:~$ scanimage -L
> device `escl:http://127.0.0.1:60000' is a HP ENVY 5530 series [FE04D6] (USB)
> flatbed scanner
> device `airscan:e0:HP ENVY 5530 series [FE04D6] (USB)' is a eSCL HP ENVY 5530
> series [FE04D6] (USB) ip=127.0.0.1
> device `hpaio:/usb/ENVY_5530_series?serial=CN595530XD06BX' is a Hewlett-Packard
> ENVY_5530_series all-in-one
>
> still understood nothing .
>
> is that what you wanted ?

Yes.

Can you scan with

simple-scan "airscan:e0:HP ENVY 5530 series [FE04D6] (USB)" ?

> do i have to open a "sane" bug ?

We will deal with that later.


Cheers,

Brian.

alain

unread,
Feb 23, 2021, 6:20:04 AM2/23/21
to
Package: hplip
Version: 3.21.2+dfsg1-1
Followup-For: Bug #983349
X-Debbugs-Cc: compte.per...@bbox.fr

thank you a lot Brian .

your command seems to work very well .

i managed to scan a blank page and then a full page .

all seems to be ok .

so where was the problem ? how to fix it ?

sane BTS told me that hplip was heavily buggy . is that true ?

thanks a lot for your help .

great thanks .

Brian Potkin

unread,
Feb 23, 2021, 7:30:03 AM2/23/21
to
reassign 983349 libsane1
thanks



On Tue 23 Feb 2021 at 12:14:09 +0100, alain wrote:

> Package: hplip
> Version: 3.21.2+dfsg1-1
> Followup-For: Bug #983349
> X-Debbugs-Cc: compte.per...@bbox.fr
>
> thank you a lot Brian .
>
> your command seems to work very well .
>
> i managed to scan a blank page and then a full page .
>
> all seems to be ok .

Good.

> so where was the problem ? how to fix it ?
>
> sane BTS told me that hplip was heavily buggy . is that true ?

'scanimage -L' offers you three backends for scanning: escl, hpaio
and airscan.

hpaio can never work while the ipp-usb service is active. This is a
feature of IPP-over-USB. It is not an hpaio bug.

escl is capable of working with ipp-usb but does not. This seems to
be a bug in SANE's libsane-escl, so I am reassigning your report to
libsane1.

airscan is an alternative to escl and, fortunately, does work.

> thanks a lot for your help .

Thanks for your engagement,

Regards,

Brian.

Till Kamppeter

unread,
Feb 23, 2021, 7:50:03 AM2/23/21
to
On 23/02/2021 13:17, Brian Potkin wrote:
> escl is capable of working with ipp-usb but does not. This seems to
> be a bug in SANE's libsane-escl, so I am reassigning your report to
> libsane1.

Note that the "escl" backend got improved a lot in sane-backends 1.0.32
which got released recently. I have already packaged it for Ubuntu
Hirsute (21.04).

I think I had this backend already used with IPP-over-USB. If it does
not actively block IPP-over-USB in newer versions it can still be that
sane-airscan simply has more quirk exceptions to make IPP-over-USB work
on more scanner models.

Till

Jens Müller

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Feb 24, 2021, 3:50:03 PM2/24/21
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Hi,

Sorry for jumping into this, I'm also unable to do remote scanning (printing is fine) with Debian Bullseye in contrast to Ubuntu 20.04. Neither of the two Uris work for me on Bullseye:

escl:https://192.168.20.28:443                            
hpaio:/net/HP_ColorLaserJet_MFP_M282-M285?ip=192.168.20.28

Installed package versions:

ii  gir1.2-libinsane-1.0:amd64                    1.0.9-2                                  amd64        Library to access scanner - GObject bindings
ii  hplip                                         3.20.11+dfsg0-2                          amd64        HP Linux Printing and Imaging System (HPLIP)
ii  hplip-data                                    3.20.11+dfsg0-2                          all          HP Linux Printing and Imaging - data files
ii  libhpmud0:amd64                               3.20.11+dfsg0-2                          amd64        HP Multi-Point Transport Driver (hpmud) run-time libraries
ii  libinsane1:amd64                              1.0.9-2                                  amd64        Library to access scanner
ii  libsane-common                                1.0.31-4                                 all          API library for scanners -- documentation and support files
ii  libsane-hpaio:amd64                           3.20.11+dfsg0-2                          amd64        HP SANE backend for multi-function peripherals
ii  libsane1:amd64                                1.0.31-4                                 amd64        API library for scanners
ii  printer-driver-hpcups                         3.20.11+dfsg0-2                          amd64        HP Linux Printing and Imaging - CUPS Raster driver (hpcups)
ii  printer-driver-postscript-hp                  3.20.11+dfsg0-2                          amd64        HP Printers PostScript Descriptions
ii  sane-utils                                    1.0.31-4                                 amd64        API library for scanners -- utilities

I am ready to provide additional logs upon request.

Regards, Jens

Jörg Frings-Fürst

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Aug 28, 2021, 9:50:03 AM8/28/21
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tags 983349 + moreinfo
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Hello,

please can you check if the bug in

- sane-backends 1.0.32-4 (currently in testing)

still exists?

Thanks in advance

CU
Jörg
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