Dolphin freezes during file transfers → system becomes sluggish, sometimes requires restart

Hi,

I’m experiencing repeated freezes and sluggish behavior with Dolphin on CachyOS.

Exact symptoms:

  1. Dolphin freezes during file transfers:

    • Copy/move operations
    • Drag-and-drop
    • File operations in general
  2. System becomes sluggish:

    • During Dolphin freezes
    • Desktop feels slow
    • Applications take long to respond
  3. Sometimes file operations don’t recover:

    • Have to restart PC
    • Operation stuck forever
  4. Desktop/path confusion:

    • Earlier had issues with Desktop / Schreibtisch paths
    • Wonder if related to file manager or desktop integration

What I observed:

  • System is otherwise usable
  • Dolphin seems unstable during file operations
  • Problem is recurring, not just one-time glitch
  • Feels like file manager or file transfer handling issue

System info:

  • CachyOS (latest)
  • KDE Plasma 6.x (Wayland)
  • Dolphin as file manager
  • 4 drives (2 SSD + 2 HDD)
  • File operations across different drives

What I tried:

  • Restarted Dolphin
  • Restarted KDE
  • Cleared Dolphin cache
  • Checked for file errors

Open questions for developers/community:

  1. Is Dolphin freezing during file transfers a known issue on CachyOS?

    • Especially with multiple drives?
  2. Could this be related to:

    • KIO cache?
    • Desktop integration (KDesktop)?
    • Wayland vs X11?
    • Filesystem type (ext4 vs NTFS)?
  3. Are there workarounds for recurring file transfer hangs?

    • Disable preview?
    • Disable thumbnails?
    • Use different file manager?
  4. Is there a CachyOS-specific Dolphin patch or config?

    • Maybe KDE package from cachyos repo?
  5. Could this be related to:

    • Disk I/O performance?
    • Drive mounting issues?
    • Permission problems?
  6. How to debug Dolphin freezes?

    • dmesg?
    • journalctl?
    • Dolphin debug mode?

Why this matters:

  • File manager should be stable
  • Freezes during copy/move are annoying
  • System slowing down is worse
  • Affects daily workflow

It seems like you are having a lot of different issues with all the posts you have created, some of them might even be related to each other, so we are not really seeing the complete picture.

It would probably help people diagnose your system if you run sudo cachyos-bugreport.sh and post the link it creates.

Here is the CachyOS bug report log:

Main issue:

  • Dolphin freezes during file transfers
  • the system becomes sluggish
  • sometimes a restart is needed

The log contains a lot of Wayland/KWin/PipeWire/DBus warnings, so that may help narrow it down.