Comment 13 for bug 1819742

Hi Brian,
new environment ubuntu 19.04 hplip 19.1
My printer model is M28A USB only

With scan-type=9 the scanner starts to move
with scan-type=5 or 7 the scanner does not move at all

for all type i/o error code 9

Models.dat modified with scan-type=7
scan-type=7

[hp_laserjet_mfp_m28-m31]
align-type=0
clean-type=0
color-cal-type=0
copy-type=0
embedded-server-type=1
fax-type=0
fw-download=False
icon=hp_color_laserjet_cm1312_mfp.png
io-mfp-mode=1
io-mode=1
io-support=10
job-storage=0
linefeed-cal-type=0
model1=HP LaserJet Pro MFP M28w
model2=HP LaserJet Pro MFP M30w
model3=HP LaserJet Pro MFP M31w
model4=HP LaserJet Pro MFP M29w
model5=HP LaserJet Pro MFP M30cw
model6=HP LaserJet Pro MFP M31cw
monitor-type=0
panel-check-type=0
pcard-type=0
plugin=0
plugin-reason=0
power-settings=0
pq-diag-type=0
r-type=0
scan-src=1
scan-type=7
status-battery-check=0
status-dynamic-counters=0
status-type=10
support-released=True
support-subtype=219b2b
support-type=2
support-ver=3.18.4
tech-class=Hbpl1
family-class=PCLM_MONO
tech-subclass=Mono
tech-type=3
usb-pid=bf2a
usb-vid=03f0
wifi-config=3

hp-scan
 hp-scan -g

HP Linux Imaging and Printing System (ver. 3.19.1)
Scan Utility ver. 2.2
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.
hp-scan[12958]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type': (<built-in function gt>, 0)}, , True)
hp-scan[12958]: debug: Mode=0
warning: No destinations specified. Adding 'file' destination by default.
Using device hpaio:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3B92743
Opening connection to device...
error: SANE: Error during device I/O (code=9)

syslog
Apr 22 21:48:56 jarno-MS-7817 hp-scan: hp-scan[12958]: warning: No destinations specified. Adding 'file' destination by default.
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 427: Found interface conf=0, iface=0, altset=0, index=1
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 389: Active kernel driver on interface=0 ret=0
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 535: claimed 7/1/2 interface
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 781: read actual device_id successfully fd=1 len=239
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 561: released 7/1/2 interface
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 961: new HP-LEDM-SCAN channel=24 clientCnt=1 channelCnt=1
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 1567: invalid HP-LEDM-SCAN channel=24
Apr 22 21:49:13 jarno-MS-7817 hp-scan: io/hpmud/musb.c 976: removed HP-LEDM-SCAN channel=24 clientCnt=0 channelCnt=0
Apr 22 21:49:13 jarno-MS-7817 hp-scan: scan/sane/http.c 263: unable to open HP-LEDM-SCAN channel
Apr 22 21:49:13 jarno-MS-7817 hp-scan: scan/sane/bb_ledm.c 531: unable to open http connection hp:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3B92743
Apr 22 21:49:13 jarno-MS-7817 hp-scan: hp-scan[12958]: error: SANE: Error during device I/O (code=9)

rgds yannick