Every time I try to copy a file onto one of the network drives, (M) and ONLY M (rest are OK), dolphin comes up with following popup:

Could not change permissions for '/net/M/ABC/XYZ.xyz'

For each file, possibly freezing my system if there are hundreds of them. Importantly the file still copies and with correct permissions, it's just super annoying to receive sometimes hundreds of these popups.

If I copy the same files to/from the same folders using cp or any other file manager such as Thunar, it works fine with no popups.

Any suggestions will be greatly appreciated. Prefer not change file managers since dolphin is by far the most stable I have used (apart from this issue).

Current fstab looks like this:

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# Network drives
10.0.0.174:/mnt/Models/M                       /net/M          nfs4    _netdev,auto                             0       0
10.0.0.164:/data/O                             /net/O          nfs    _netdev,auto                              0       0
10.0.0.178:/mnt/P/P                            /net/P          nfs    _netdev,auto                              0       0
10.0.0.149:/data/X                             /net/X          nfs    _netdev,auto                              0       0
10.0.0.122:/data/                              /net/V          nfs    _netdev,auto                              0       0
10.0.0.174:/mnt/Models/M-snapshot-20190318     /net/M-Recover  nfs4    _netdev,auto                             0       0


All network drives run on FreeNAS, the problematic M is on 11.1 while the rest are on 11.2. I could upload config files but don't want to upload them publicly.

User kbroulik on reddit has provided a working answer.

This got fixed a few months ago: https://cgit.kde.org/kio.git/commit/?id ... 8a2eb9ccfc

How to fix:

Thanks absolute legend, you have made my day!

Checking this, it seemed to have been added to v5.60.0

But kubuntu has only v5.56.0 available

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sudo apt install kio
kio is already the newest version (5.56.0-0ubuntu1).

So had to add the kubuntu ppa, and upgrade my system:

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sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt update
sudo apt upgrade

All works now!