Segment material and orientation does not persist

[bort9]

Are you already using Valetudo?

Yes, for a long time

Your questions

Love the floor material customisation introduced in 2026.01.0, works great on the Dreame L10s PUH with my semi-uneven wooden floor.

After making some adjustments to the material type and orientation via the Valetudo web GUI to reflect the material type and orientation, it seems this keeps reverting to the prior state after a vacuum and mop cycle.

I've since tried upgrading the robot firmware from v1574 to v1633, updating Valetudo to latest 2026.02.0, neither of which seems to helped.

Any suggestions to where I can look next to make this change more permanent?

[Hypfer]

Yeah that seems to be a thing on all Dreames so far. They just decide to change it.

I did some digging to see if I'm doing something wrong, but that doesn't seem to be the case. At least I did not find anything after a few hours, which was when I decided that it is enough.

FWIW, this seems to also be an issue when running stock?
https://www.reddit.com/r/Dreame_Tech/comments/1pl6qky/l50_ultra_keeps_changing_floor_material/

Unfortunately no comments there.

I also tried reaching out to the dreame support, but they wanted me to share a video of the issue, which doesn't make sense, so I lost motivation there. But maybe you have more energy to get an answer out of them. If there even is one that is

[mafredri]

I created a bit of a silly work-around for this, because floor materials seem to apply until they are reset upon docking/map update.

On the robot, create /data/hack_set_floor_material.sh (chmod +x):

#!/bin/sh

set -e

set_floor_material() {
	segment=$1
	material=$2

	curl -s -X PUT \
		-H 'Content-Type: application/json' \
		--data-raw '{"action":"set_material","segment_id":"'"$segment"'","material":"'"$material"'"}' \
		'http://localhost/api/v2/robot/capabilities/MapSegmentMaterialControlCapability' \
		| grep -q OK
}

# Ensure the robot is docked.
if curl -s 'http://localhost/api/v2/robot/state/attributes' | grep -q '"docked"'; then
	# If no floor type is wood_horizontal, then the floor type has reset.
	if ! curl -s http://localhost/api/v2/robot/state/map | grep -q '"wood_horizontal"'; then
		# Set all non-tile segments to wood_horizontal.
		for i in 1 2 4 5 8 9 10; do
			set_floor_material $i wood_horizontal
		done

		# Set tile segments.
		for i in 3 6 7; do
			set_floor_material $i tile
		done
	fi
fi

Add to crontab (runs every minute):

# crontab -e

* * * * * /data/hack_set_floor_material.sh

You'll probably want to apply the crontab edit on every boot via /data/_root_postboot.sh too (but I didn't do that yet.

EDIT: For persistence, create a second file:

echo "* * * * * /data/hack_set_floor_material.sh" > /data/hack_set_floor_material.crontab

And add this to /data/_root_postboot.sh:

if [[ -f /data/hack_set_floor_material.crontab ]]; then
        (crontab -l | grep -v hack_set_floor_material; cat /data/hack_set_floor_material.crontab) | crontab -
fi