Hyprland crashes (black screen) after rclone mount is unmounted

[FusionGold]

Description

When using rclone mount, Hyprland crashes upon unmounting the remote. This issue occurs on both my host and virtual machine with Hyprland. GNOME or Niri is unaffected.

How to reproduce

1. Open a terminal, run rclone mount remote: test/
2. Unmount via Ctrl-C/file manager/the umount command/fusemount3 -u command
3. Hyprland session crashes(black screen), after a while return to gdm.

System Info and Version

System/Version info

Hyprland 0.49.0 built from branch  at commit 9958d297641b5c84dcff93f9039d80a5ad37ab00  (version: bump to 0.49.0).
Date: Thu May 8 20:15:18 2025
Tag: v0.49.0, commits: 6098
built against:
 aquamarine 0.8.0
 hyprlang 0.6.3
 hyprutils 0.7.1
 hyprcursor 0.1.12
 hyprgraphics 0.1.3


no flags were set


System Information:
System name: Linux
Node name: arch-guest
Release: 6.14.9-arch1-1
Version: #1 SMP PREEMPT_DYNAMIC Thu, 29 May 2025 21:42:15 +0000


GPU information:
00:01.0 VGA compatible controller [0300]: Red Hat, Inc. Virtio 1.0 GPU [1af4:1050] (rev 01) (prog-if 00 [VGA controller])


os-release: NAME="Arch Linux"
PRETTY_NAME="Arch Linux"
ID=arch
BUILD_ID=rolling
ANSI_COLOR="38;2;23;147;209"
HOME_URL="https://archlinux.org/"
DOCUMENTATION_URL="https://wiki.archlinux.org/"
SUPPORT_URL="https://bbs.archlinux.org/"
BUG_REPORT_URL="https://gitlab.archlinux.org/groups/archlinux/-/issues"
PRIVACY_POLICY_URL="https://terms.archlinux.org/docs/privacy-policy/"
LOGO=archlinux-logo


plugins:
	unknown: not runtime

Crash reports, logs, images, videos

hyprland_black_screen.mp4

[vaxerski]

crash report?

[FusionGold]

$XDG_CACHE_HOME/hyprland has nothing.

The log under $XDG_RUNTIME_DIR: hyprland.log
21:21:59 is the time I press Ctrl-C.

Is this log helpful for debugging? boss @vaxerski

[vaxerski]

no but you could https://wiki.hyprland.org/Crashes-and-Bugs/#obtaining-a-debug-stacktrace

[FusionGold]

Hi boss, I've been testing this for a few days. Unfortunately, coredumpctl list doesn't show any entries, so I couldn't obtain a stacktrace.

I found that the issue only occurs when I launch Hyprland using the Hyprland (uwsm-managed) session. Both the non-systemd entry Hyprland and the older Hyprland (systemd session) (which was replaced by uwsm, I manually copied for test) don't have this problem.
Missing the old Hyprland (systemd session) — it was simple and good enough.

[FusionGold]

Confirmed that the issue was caused by uwsm, as outlined in Vladimir-csp/uwsm#136. Waiting for a fix on their end.