Comment 4 for bug 1809287

I ask this question as the Sane on Linux scans very slowly.
It takes a long time between press "scan" button and actually starting the scan (~40 sec).

Wherein HP Smart on Android and HP Scan on Windows 10 start scanning immediately.

On start scannig I have errors:

Dec 17 02:50:55 sabo-probook perl: io/hpmud/model.c 532: no laserjet_mfp_m28-m31 attributes found in /usr/share/hplip/data/models/models.dat
Dec 17 02:50:55 sabo-probook perl: io/hpmud/model.c 543: no laserjet_mfp_m28-m31 attributes found in /usr/share/hplip/data/models/unreleased/unreleased.dat
Dec 17 02:51:00 sabo-probook perl: scan/sane/escl.c 418: escl_open() session=(nil)
Dec 17 02:51:00 sabo-probook perl: common/utils.c 245: unable to load library libm.so: /usr/lib/x86_64-linux-gnu/libm.so: invalid elf header

Before scan starting I have errors:

Dec 17 02:49:19 sabo-probook scanimage: io/hpmud/jd.c 694: timeout read_channel sec=10 hp:/net/HP_LaserJet_MFP_M28-M31?ip=192.168.12.4
Dec 17 02:49:29 sabo-probook scanimage: io/hpmud/jd.c 694: timeout read_channel sec=10 hp:/net/HP_LaserJet_MFP_M28-M31?ip=192.168.12.4
Dec 17 02:49:29 sabo-probook scanimage: http.c 153: hpmud_read_channel failed retrying (2) more times)