HPLIP

[patch] LaserJet 1020 firmware load fix

Bug #1922404 reported by dgcampea on 2021-04-03

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	HPLIP	New	Undecided	Unassigned

Bug Description

Tested on Laserjet 1020 but might apply to any similar printer that requires firmware loading.

HPLIP attempts to establish contact with the printer too soon after uploading the firmware, while the printer is potentially not fully initialized or ready to respond over usb. This causes udev-configure-printer and hplip to time out, resulting in the printer unable to be recognized by the system.

Inserting a delay in config_usb_printer.py right after it calls hp-firmware allows enough time for the printer to complete initializing, which fixes the issue.

Edit: patch applies against hplip 3.21.2

See original description

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Revision history for this message

dgcampea (dgcampea) wrote on 2021-04-03:

fix1020.patch Edit (662 bytes, text/plain)

dgcampea (dgcampea) on 2021-04-03

description:

updated

dgcampea (dgcampea) on 2021-05-10

description:

updated

Revision history for this message

dgcampea (dgcampea) wrote on 2021-06-26:

fix1020_r2.patch Edit (680 bytes, text/plain)

When cleaning up the original fix attempt in order to create a patch, I incorrectly applied the delay before the firmware update command was sent.
This has been corrected in the second revision of fix1020.patch

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