[Bug]: Wallpaper not set

[khaosdoctor]

Walt Version

0.9.1

Rust Version

1.94.0

Hyprland Version

0.54.2

Interface

Both

Terminal Emulator

Kitty

Description

Setting the wallpaper doesn't work at all. Walt can't set the wallpaper in any mode:

It still says the wallpaper was set. Probably related to #27 but waypaper works normally and hyprpaper works if I set it through the CLI with hyprpaper wallpaper ...

Steps to Reproduce

1. Run walt
2. Open all wallpapers
3. Try to set one to all monitors

Expected Behavior

The wallpaper is set on both monitors

Logs or Error Messages

Logs:


2026-03-15 12:19:43.528 INFO  walt starting Walt version=0.9.1 argv=["gui"] level=INFO
2026-03-15 12:19:43.528 INFO  walt log file path=/home/khaosdoctor/.cache/walt/logs/walt.log
2026-03-15 12:19:43.528 INFO  walt selected command=Gui
2026-03-15 12:19:43.528 INFO  walt::gui starting GUI
2026-03-15 12:19:43.589 WARN  walt::backend::hyprpaper hyprpaper Active wallpaper query failed unsupported-active-query details=Active wallpaper query failed: status exit status: 1, stdout: error: can't send: hyprpaper protocol version too low (hyprpaper too old)
2026-03-15 12:19:43.590 WARN  walt::backend::hyprpaper hyprpaper active wallpaper query unsupported-active-query details=Active wallpaper query failed: status exit status: 1, stdout: error: can't send: hyprpaper protocol version too low (hyprpaper too old)
2026-03-15 12:19:43.590 INFO  walt::backend::hyprpaper active wallpaper query unsupported; using best-effort local state
2026-03-15 12:19:50.509 INFO  walt::gui::app gui applying wallpaper to all displays path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:19:50.509 INFO  walt::backend::hyprpaper applying wallpaper to all monitors path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:19:50.538 WARN  walt::backend::hyprpaper hyprpaper Preload failed unsupported-preload details=Preload failed: status exit status: 1, stdout: error: invalid hyprpaper request
2026-03-15 12:19:50.538 INFO  walt::backend::hyprpaper hyprpaper preload unsupported for path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg; applying wallpaper without preload
2026-03-15 12:19:50.598 INFO  walt::gui::app gui success: Wallpaper set on all displays: /home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:20:18.578 INFO  walt::backend::rotation installing Walt rotation service
2026-03-15 12:20:18.578 INFO  walt::backend::rotation enabling Walt rotation service
2026-03-15 12:20:19.012 INFO  walt::gui::app gui success: Installed and started Walt rotation service.
2026-03-15 12:20:22.401 INFO  walt::gui::app gui info: Rotation will use only the selected wallpaper list.
2026-03-15 12:20:23.850 INFO  walt::gui::app gui info: Rotation will use all indexed wallpapers.
2026-03-15 12:20:44.301 INFO  walt::gui::app gui applying wallpaper to single display monitor=DP-1 path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:20:44.301 INFO  walt::backend::hyprpaper applying wallpaper to single monitor monitor=DP-1 path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:20:44.330 INFO  walt::gui::app gui success: Wallpaper set on DP-1: /home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:23:08.222 INFO  walt starting Walt version=0.9.1 argv=["gui"] level=INFO
2026-03-15 12:23:08.222 INFO  walt log file path=/home/khaosdoctor/.cache/walt/logs/walt.log
2026-03-15 12:23:08.222 INFO  walt selected command=Gui
2026-03-15 12:23:08.223 INFO  walt::gui starting GUI
2026-03-15 12:23:08.284 WARN  walt::backend::hyprpaper hyprpaper Active wallpaper query failed unsupported-active-query details=Active wallpaper query failed: status exit status: 1, stdout: error: can't send: hyprpaper protocol version too low (hyprpaper too old)
2026-03-15 12:23:08.285 WARN  walt::backend::hyprpaper hyprpaper active wallpaper query unsupported-active-query details=Active wallpaper query failed: status exit status: 1, stdout: error: can't send: hyprpaper protocol version too low (hyprpaper too old)
2026-03-15 12:23:08.285 INFO  walt::backend::hyprpaper active wallpaper query unsupported; using best-effort local state
2026-03-15 12:23:11.131 INFO  walt::gui::app gui applying wallpaper to all displays path=/home/khaosdoctor/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:11.131 INFO  walt::backend::hyprpaper applying wallpaper to all monitors path=/home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:11.164 WARN  walt::backend::hyprpaper hyprpaper Preload failed unsupported-preload details=Preload failed: status exit status: 1, stdout: error: invalid hyprpaper request
2026-03-15 12:23:11.164 INFO  walt::backend::hyprpaper hyprpaper preload unsupported for path=/home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg; applying wallpaper without preload
2026-03-15 12:23:11.228 INFO  walt::gui::app gui success: Wallpaper set on all displays: /home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:26.291 INFO  walt::backend::rotation uninstalling Walt rotation service
2026-03-15 12:23:26.291 INFO  walt::backend::rotation disabling Walt rotation service
2026-03-15 12:23:26.709 INFO  walt::gui::app gui success: Removed Walt rotation service.
2026-03-15 12:23:32.169 INFO  walt::gui::app gui applying wallpaper to all displays path=/home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:32.169 INFO  walt::backend::hyprpaper applying wallpaper to all monitors path=/home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:32.239 INFO  walt::gui::app gui success: Wallpaper set on all displays: /home/ll/Pictures/wallpapers/landscape/3d-abstract-polygon-digital-art-4k-wallpaper-uhdpaper.com-710@2@b.jpg
2026-03-15 12:23:33.932 INFO  walt::gui::app gui applying wallpaper to all displays path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:23:33.932 INFO  walt::backend::hyprpaper applying wallpaper to all monitors path=/home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg
2026-03-15 12:23:34.000 INFO  walt::gui::app gui success: Wallpaper set on all displays: /home/ll/Pictures/wallpapers/landscape/astronaut-space-digital-art-4k-wallpaper-uhdpaper.com-700@1@k.jpg

Checklist

• I've searched existing issues and this hasn't been reported

[gitfudge0]

This is a protocol compatibility issue between the hyprctl shipped with Hyprland 0.54.x and the running hyprpaper version. The protocol version too low error comes from hyprctl hyprpaper listactive, which needs a newer Hyprpaper status protocol than the one available in the affected setup.

In my testing, I still hit this on 0.54-era setups, and dropping back to Hyprland 0.53 made things behave again.

I will keep an eye out for the compatibility fix and push a release out for Walt.
Thanks for being patient and for filing this issue!

[MaoRusk]

Walt Version
0.9.1

Rust Version
1.94.1

Hyprland Version
0.54.3

Hyprpaper Version
0.8.3

Terminal Emulator
Kitty

Hi! I've been a problem related with this, in my case I thought the problem was the new syntax of hyprpaper:
https://wiki.hypr.land/Hypr-Ecosystem/hyprpaper/

I tried to use that config in my hyprpaper.conf, but, appears some errors with the new syntax

As you can see in the ss, I have the correct syntax of hyprpaper, but still appears some errors with hyprpaper, I've searching in r/unixporn something about this, but I did not found anything

The way that I did walt running correctly with this new hyprpaper syntax was not include in my hyprland.conf (just commented) and walt it's working again (because in the docs, mentioned that is not required to include the hyprpaper.conf)

2026-03-29.17-00-07.mp4

I hope this could help with, cheers!
(sorry for my bad english)

[gitfudge0]

Thanks, @MaoRusk for taking the time and effort to debug this. This seems dumb in the first place but I'm glad you got it working, and helping us with this. I'll see if I can add something to circumvent this issue.

Again, thank you so much for like Walt enough to put in the effort - much appreciated!