Hi Agustin,
the method you suggested unfortunately didn’t work for me: sane-airscan
did not detect my HP scanner.
After several attempts I managed to solve it by upgrading hplip to
version 3.26.4 from the repositories and then installing the proprietary
plugin downloaded from:
https://developers.hp.com/sites/default/files/2026-05/hplip-3.26.4-plugin.run
<https://developers.hp.com/sites/default/files/2026-05/hplip-3.26.4-plugin.run>
I launched it with: QT_QPA_PLATFORM=xcb ./hplip-3.26.4-plugin.run to
avoid Wayland-related errors. After this the scanner works normally and
it also fixed a freeze that occurred immediately after powering on:
previously, starting a scan during the 20–30 sec. calibration would
cause the process to hang; now simple-scan waits for the device to be
ready and completes the scan.
This is an empirical workaround — the hplip package installed from the
repositories without these extra steps still exhibits the problem, so
the upstream package needs to be fixed.
Thanks anyway for the suggestion and the help.
Best regards,
Antonio
Il 03/06/26 15:00, Agustin Martin ha scritto:
On Fri, May 29, 2026 at 11:21:14AM +0200, Antonio wrote:
Package: hplip
Version: 3.22.10+dfsg0-8.1
Severity: normal
X-Debbugs-Cc:[email protected]
Dear Maintainer,
I am writing to report a regression in Debian Unstable affecting the scanner
functionality of my HP LaserJet MFP 234d. The issue appeared immediately
following an automatic system upgrade of HPLIP-related packages.
While the printing function continues to work correctly, all scanning
applications (simple-scan, hp-scan) have stopped functioning.
...
Error Logs:
*) simple-scan fails with the following errors in journalctl:
- unable to load library libm.so: /lib/x86_64-linux-gnu/libm.so: invalid
ELF
header
- Plugin version[3.22.10] mismatch with HPLIP version[3.26.4]
- Plugin version is not matching
*) hp-scan returns the error:
- "Error during device I/O (code=9)"
Hi, Antonio,
Seems that for some HP printers there is need for a propietary plugin
that must match exactly hplip version.
While you can download the plugin, I suggest to try installing the
'sane-airscan' package and see what happens. Your printer/scanner may
work driverless as scanner with sane-airscan (using the eSCL/airscan
protocol), and that does not require HPLIP.
Hope this helps,
