F42 KDE: Dolphin crashes browsing SMB shares

Ask Fedora
1

Did a fresh Fedora 42 KDE Plasma install.

Brief description of system: Old but still kickin’:

–ASRock Z77 Extreme4 motherboard
–Intel Ivy Bridge CPU (i5)

–16 GB RAM

–multiple hard drives and SSD’s

–Intel AX210 add-in card (6 GHz WiFi works, which is really cool and a reason I am exploring Fedora 42 as a replacement for Windows 10)

–Nvidia GTX 970 GPU

–a DVD-RW drive which powers up but doesn’t work, but I don’t use it anyway.

“Monitor” is a 65" Samsung 4k TV, connected via GPU HDMI port.

Immediately after install, every time I tried to access an SMB share on the local network (Windows-based NAS, basically) through Dolphin, I got as far as entering login credentials, then Dolphin crashed.

OK…

Installed Nvidia drivers (570.144). Same result.

Added option to boot into X11 desktop instead of Wayland, because I didn’t get the full Nvidia control panel under Wayland (a known bug apparently). Using X11/xorg desktop, nvidia-settings app works fully (Yay!) but Dolphin still crashes when trying to access an SMB share (boo!).

SMB access does kinda work in this way however: Zero problems accessing SMB shares and playing media over the network via Kodi.

I don’t know where to go from here. Is there a less-buggy, alternate file system explorer I can use? Is there a way to make Dolphin behave?

2

Additional note: I had exactly the same problem with a Fedora 42 Workstation install.

3

What does coredumpctl show you about the crash?
See man coredumpctl if you are not familar with that tool.

With that info you will likely need to report as a bug.
See How to file a bug :: Fedora Docs

1 Like
4

Here’s some more info.

If I launch Dolphin from a terminal, I see the following message after it crashes (when trying to access an SMB share):

kf.kio.core: Internal error: itemsInUse did not contain QUrl("smb://SMBusername@windowsmachine.local/")
KCrash: Application 'dolphin' crashing... crashRecursionCounter = 2
Segmentation fault (core dumped)

Note that “windowsmachine.local” refers to the LAN SMB share I was attempting to access (which is running on a Windows machine). similarly, “SMBusername” is the account I created on that machine for file sharing.

As for coredumpctl, I was able to find this detailed info regarding the last Dolphin crash (using “coredumpctl info” option):

PID: 3083 (dolphin)
           UID: 1000 (my_username)
           GID: 1000 (my_username)
        Signal: 11 (SEGV)
     Timestamp: Wed 2025-05-14 14:03:13 MDT (1min 49s ago)
  Command Line: /usr/bin/dolphin
    Executable: /usr/bin/dolphin
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-\x2fusr\x2fbin\x2>
          Unit: user@1000.service
     User Unit: app-\x2fusr\x2fbin\x2fdolphin@bfa2cf479ea74af1bb55db7166a0b6c6.service
         Slice: user-1000.slice
     Owner UID: 1000 (my_username)
       Boot ID: e32234a73dfa42cba9fd8b8004d5682a
    Machine ID: adb71d6e039a4c1ea08558399c37953b
      Hostname: HostnameRedacted
       Storage: /var/lib/systemd/coredump/core.dolphin.1000.e32234a73dfa42cba9fd8b8004d5682a.>
  Size on Disk: 5.1M
       Package: dolphin/25.04.0-3.fc42
      build-id: e4e62544c4356265d8a02ec8df2f71d562d221b6
       Message: Process 3083 (dolphin) of user 1000 dumped core.
                
                Module /usr/bin/dolphin from rpm dolphin-25.04.0-3.fc42.x86_64
                Module kuriikwsfilter.so from rpm kf6-kio-6.13.0-2.fc42.x86_64
                Module fixhosturifilter.so from rpm kf6-kio-6.13.0-2.fc42.x86_64
                Module localdomainurifilter.so from rpm kf6-kio-6.13.0-2.fc42.x86_64
                Module libkuriikwsfiltereng_private.so.6 from rpm kf6-kio-6.13.0-2.fc42.x86_64
                Module kurisearchfilter.so from rpm kf6-kio-6.13.0-2.fc42.x86_64

Further note: Same crash happens if I manually enter SMB host info in the address bar of Dolphin (e.g. “smb://192.168.x.y” and then enter login info).

Does this help?

5

You need to get the stack trace as well as the info above.
Try the coredumpctl dump command.

Once you have that information you can report the problem to the KDE developers in their bug tracker.

6

I have the exact same behavior, but a different error on a fresh install of Fedora 42.

From the shell when it crashes:

kellic@prometheus:~$ kf.kio.core: Connection::send() called with connection not inited
kf.kio.core: An error occurred during write. The worker terminates now.

-I was just on Fedora 41, latest updates, no issues getting to the share.
-I open dolphin.
-Go to smb://xxx.xxx.xxx.xxx, it prompts for creds, I submit them, and it crashes.

Currently working on reporting it in the problem reporting tool. It’s working on a backtrace right now. Just figured I’d post it to let people know this may not be a one off issue.